/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-ext/13_unverif.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 19:43:10,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 19:43:10,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 19:43:10,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 19:43:10,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 19:43:10,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 19:43:10,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 19:43:10,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 19:43:10,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 19:43:10,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 19:43:10,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 19:43:10,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 19:43:10,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 19:43:10,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 19:43:10,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 19:43:10,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 19:43:10,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 19:43:10,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 19:43:10,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 19:43:10,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 19:43:10,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 19:43:10,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 19:43:10,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 19:43:10,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 19:43:10,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 19:43:10,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 19:43:10,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 19:43:10,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 19:43:10,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 19:43:10,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 19:43:10,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 19:43:10,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 19:43:10,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 19:43:10,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 19:43:10,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 19:43:10,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 19:43:10,566 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 [2019-12-18 19:43:10,580 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 19:43:10,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 19:43:10,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 19:43:10,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 19:43:10,582 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 19:43:10,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 19:43:10,582 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 19:43:10,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 19:43:10,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 19:43:10,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 19:43:10,584 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 19:43:10,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 19:43:10,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 19:43:10,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 19:43:10,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 19:43:10,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 19:43:10,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 19:43:10,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 19:43:10,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 19:43:10,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 19:43:10,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 19:43:10,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 19:43:10,876 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 19:43:10,879 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 19:43:10,879 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 19:43:10,881 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 19:43:10,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695531142/ec603923058549a4b3116235f39a0aa5/FLAGbe8db240e [2019-12-18 19:43:11,468 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 19:43:11,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/13_unverif.i [2019-12-18 19:43:11,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695531142/ec603923058549a4b3116235f39a0aa5/FLAGbe8db240e [2019-12-18 19:43:11,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/695531142/ec603923058549a4b3116235f39a0aa5 [2019-12-18 19:43:11,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 19:43:11,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 19:43:11,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 19:43:11,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 19:43:11,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 19:43:11,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:43:11" (1/1) ... [2019-12-18 19:43:11,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d68ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:11, skipping insertion in model container [2019-12-18 19:43:11,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:43:11" (1/1) ... [2019-12-18 19:43:11,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 19:43:11,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 19:43:12,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:43:12,348 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 19:43:12,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 19:43:12,491 INFO L208 MainTranslator]: Completed translation [2019-12-18 19:43:12,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12 WrapperNode [2019-12-18 19:43:12,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 19:43:12,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 19:43:12,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 19:43:12,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 19:43:12,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 19:43:12,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 19:43:12,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 19:43:12,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 19:43:12,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (1/1) ... [2019-12-18 19:43:12,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 19:43:12,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 19:43:12,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 19:43:12,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 19:43:12,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (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 [2019-12-18 19:43:12,632 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-18 19:43:12,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-18 19:43:12,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 19:43:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 19:43:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 19:43:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 19:43:12,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 19:43:12,635 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 19:43:12,788 INFO L1525 $ProcedureCfgBuilder]: dropping label inside atomic statement: __VERIFIER_atomic_inc_r_returnLabel [2019-12-18 19:43:12,940 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 19:43:12,941 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-18 19:43:12,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:43:12 BoogieIcfgContainer [2019-12-18 19:43:12,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 19:43:12,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 19:43:12,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 19:43:12,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 19:43:12,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:43:11" (1/3) ... [2019-12-18 19:43:12,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3a2f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:43:12, skipping insertion in model container [2019-12-18 19:43:12,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:43:12" (2/3) ... [2019-12-18 19:43:12,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3a2f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:43:12, skipping insertion in model container [2019-12-18 19:43:12,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:43:12" (3/3) ... [2019-12-18 19:43:12,951 INFO L109 eAbstractionObserver]: Analyzing ICFG 13_unverif.i [2019-12-18 19:43:12,962 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 19:43:12,962 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 19:43:12,970 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 19:43:12,971 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 19:43:12,994 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,995 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,995 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,995 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,996 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,996 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,997 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,997 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,997 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,998 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:12,998 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,002 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,003 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,003 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,003 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,003 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:13,021 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-18 19:43:13,038 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:43:13,038 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:43:13,039 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:43:13,039 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:43:13,039 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:43:13,039 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:43:13,039 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:43:13,040 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:43:13,051 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 31 transitions [2019-12-18 19:43:13,053 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 19:43:13,083 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 19:43:13,083 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:13,089 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 19:43:13,091 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 31 places, 31 transitions [2019-12-18 19:43:13,103 INFO L126 PetriNetUnfolder]: 4/39 cut-off events. [2019-12-18 19:43:13,104 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:13,105 INFO L76 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 4/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs. 5/37 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2019-12-18 19:43:13,107 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2019-12-18 19:43:13,108 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:43:13,839 INFO L206 etLargeBlockEncoding]: Checked pairs total: 169 [2019-12-18 19:43:13,840 INFO L214 etLargeBlockEncoding]: Total number of compositions: 27 [2019-12-18 19:43:13,843 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 10 places, 10 transitions [2019-12-18 19:43:13,850 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24 states. [2019-12-18 19:43:13,852 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-18 19:43:13,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-18 19:43:13,859 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:13,860 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-18 19:43:13,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 144192241, now seen corresponding path program 1 times [2019-12-18 19:43:13,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:13,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222866662] [2019-12-18 19:43:13,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:14,156 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222866662] [2019-12-18 19:43:14,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:14,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:43:14,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319569293] [2019-12-18 19:43:14,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:14,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:14,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:14,181 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-12-18 19:43:14,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:14,219 INFO L93 Difference]: Finished difference Result 23 states and 38 transitions. [2019-12-18 19:43:14,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:14,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-18 19:43:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:14,231 INFO L225 Difference]: With dead ends: 23 [2019-12-18 19:43:14,231 INFO L226 Difference]: Without dead ends: 23 [2019-12-18 19:43:14,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-18 19:43:14,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-18 19:43:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-18 19:43:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2019-12-18 19:43:14,270 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 38 transitions. Word has length 5 [2019-12-18 19:43:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:14,271 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-12-18 19:43:14,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 38 transitions. [2019-12-18 19:43:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 19:43:14,272 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:14,272 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-18 19:43:14,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash 174992566, now seen corresponding path program 1 times [2019-12-18 19:43:14,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:14,273 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992542063] [2019-12-18 19:43:14,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:14,430 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992542063] [2019-12-18 19:43:14,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:14,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 19:43:14,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401347190] [2019-12-18 19:43:14,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 19:43:14,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 19:43:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 19:43:14,436 INFO L87 Difference]: Start difference. First operand 23 states and 38 transitions. Second operand 3 states. [2019-12-18 19:43:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:14,460 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2019-12-18 19:43:14,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 19:43:14,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-18 19:43:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:14,462 INFO L225 Difference]: With dead ends: 19 [2019-12-18 19:43:14,462 INFO L226 Difference]: Without dead ends: 19 [2019-12-18 19:43:14,463 INFO L631 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 [2019-12-18 19:43:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-18 19:43:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2019-12-18 19:43:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-18 19:43:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2019-12-18 19:43:14,472 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 6 [2019-12-18 19:43:14,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:14,477 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2019-12-18 19:43:14,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 19:43:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2019-12-18 19:43:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 19:43:14,479 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:14,479 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-12-18 19:43:14,479 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:14,480 INFO L82 PathProgramCache]: Analyzing trace with hash 174947503, now seen corresponding path program 1 times [2019-12-18 19:43:14,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:14,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932088157] [2019-12-18 19:43:14,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:14,570 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:43:14,570 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:43:14,571 WARN L364 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:43:14,571 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2019-12-18 19:43:14,579 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,580 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,580 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,580 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,580 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,581 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,582 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,584 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,584 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,584 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,584 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,584 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,586 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,592 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,593 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,594 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:14,599 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 19:43:14,599 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:43:14,599 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:43:14,599 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:43:14,600 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:43:14,600 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:43:14,600 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:43:14,600 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:43:14,600 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:43:14,602 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 44 transitions [2019-12-18 19:43:14,603 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 19:43:14,634 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 19:43:14,634 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:14,639 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 19:43:14,643 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 44 places, 44 transitions [2019-12-18 19:43:14,669 INFO L126 PetriNetUnfolder]: 7/61 cut-off events. [2019-12-18 19:43:14,669 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:14,672 INFO L76 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 7/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 124 event pairs. 14/63 useless extension candidates. Maximal degree in co-relation 40. Up to 6 conditions per place. [2019-12-18 19:43:14,675 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2019-12-18 19:43:14,675 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:43:15,159 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1527 [2019-12-18 19:43:15,159 INFO L214 etLargeBlockEncoding]: Total number of compositions: 28 [2019-12-18 19:43:15,159 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 21 transitions [2019-12-18 19:43:15,173 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 242 states. [2019-12-18 19:43:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2019-12-18 19:43:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:43:15,188 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:15,189 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:15,189 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash -318478320, now seen corresponding path program 1 times [2019-12-18 19:43:15,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:15,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989902621] [2019-12-18 19:43:15,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:15,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989902621] [2019-12-18 19:43:15,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:15,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:15,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845414086] [2019-12-18 19:43:15,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:15,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:15,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:15,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:15,306 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2019-12-18 19:43:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:15,399 INFO L93 Difference]: Finished difference Result 278 states and 739 transitions. [2019-12-18 19:43:15,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:15,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 19:43:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:15,408 INFO L225 Difference]: With dead ends: 278 [2019-12-18 19:43:15,408 INFO L226 Difference]: Without dead ends: 278 [2019-12-18 19:43:15,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:15,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-12-18 19:43:15,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 238. [2019-12-18 19:43:15,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2019-12-18 19:43:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 633 transitions. [2019-12-18 19:43:15,449 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 633 transitions. Word has length 7 [2019-12-18 19:43:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:15,449 INFO L462 AbstractCegarLoop]: Abstraction has 238 states and 633 transitions. [2019-12-18 19:43:15,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 633 transitions. [2019-12-18 19:43:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:43:15,451 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:15,451 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2019-12-18 19:43:15,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:15,452 INFO L82 PathProgramCache]: Analyzing trace with hash -2063189442, now seen corresponding path program 1 times [2019-12-18 19:43:15,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:15,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135477009] [2019-12-18 19:43:15,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:15,476 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:43:15,477 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:43:15,477 WARN L364 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:43:15,477 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2019-12-18 19:43:15,486 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,486 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,486 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,486 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,486 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,487 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,487 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,487 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,491 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,492 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,492 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,493 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,493 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,494 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,494 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,495 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,499 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,500 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,501 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,501 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,502 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,502 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,513 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,514 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,514 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,517 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,517 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,518 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:15,520 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-18 19:43:15,520 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:43:15,520 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:43:15,520 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:43:15,521 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:43:15,521 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:43:15,521 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:43:15,521 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:43:15,521 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:43:15,526 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 57 transitions [2019-12-18 19:43:15,526 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 19:43:15,559 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 19:43:15,560 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:15,564 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 19:43:15,571 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions [2019-12-18 19:43:15,592 INFO L126 PetriNetUnfolder]: 10/83 cut-off events. [2019-12-18 19:43:15,592 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:15,597 INFO L76 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 83 events. 10/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 192 event pairs. 27/93 useless extension candidates. Maximal degree in co-relation 65. Up to 8 conditions per place. [2019-12-18 19:43:15,601 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2019-12-18 19:43:15,602 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:43:16,091 INFO L206 etLargeBlockEncoding]: Checked pairs total: 3846 [2019-12-18 19:43:16,091 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-12-18 19:43:16,091 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 29 transitions [2019-12-18 19:43:16,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1456 states. [2019-12-18 19:43:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states. [2019-12-18 19:43:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:43:16,159 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:16,159 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:16,159 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:16,160 INFO L82 PathProgramCache]: Analyzing trace with hash 679007988, now seen corresponding path program 1 times [2019-12-18 19:43:16,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:16,160 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512956785] [2019-12-18 19:43:16,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:16,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512956785] [2019-12-18 19:43:16,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:16,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:16,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406054450] [2019-12-18 19:43:16,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:16,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:16,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:16,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:16,276 INFO L87 Difference]: Start difference. First operand 1456 states. Second operand 5 states. [2019-12-18 19:43:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:16,415 INFO L93 Difference]: Finished difference Result 1766 states and 6426 transitions. [2019-12-18 19:43:16,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:16,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 19:43:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:16,445 INFO L225 Difference]: With dead ends: 1766 [2019-12-18 19:43:16,445 INFO L226 Difference]: Without dead ends: 1766 [2019-12-18 19:43:16,446 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:16,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2019-12-18 19:43:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1375. [2019-12-18 19:43:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1375 states. [2019-12-18 19:43:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 5020 transitions. [2019-12-18 19:43:16,564 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 5020 transitions. Word has length 7 [2019-12-18 19:43:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:16,564 INFO L462 AbstractCegarLoop]: Abstraction has 1375 states and 5020 transitions. [2019-12-18 19:43:16,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 5020 transitions. [2019-12-18 19:43:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:43:16,567 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:16,567 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:16,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash -308361575, now seen corresponding path program 1 times [2019-12-18 19:43:16,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:16,568 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359433809] [2019-12-18 19:43:16,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:16,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359433809] [2019-12-18 19:43:16,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:16,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:16,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394095683] [2019-12-18 19:43:16,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:16,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:16,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:16,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:16,681 INFO L87 Difference]: Start difference. First operand 1375 states and 5020 transitions. Second operand 4 states. [2019-12-18 19:43:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:16,814 INFO L93 Difference]: Finished difference Result 1759 states and 6445 transitions. [2019-12-18 19:43:16,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:16,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:43:16,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:16,832 INFO L225 Difference]: With dead ends: 1759 [2019-12-18 19:43:16,833 INFO L226 Difference]: Without dead ends: 1759 [2019-12-18 19:43:16,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2019-12-18 19:43:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1457. [2019-12-18 19:43:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2019-12-18 19:43:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 5350 transitions. [2019-12-18 19:43:16,918 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 5350 transitions. Word has length 9 [2019-12-18 19:43:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:16,918 INFO L462 AbstractCegarLoop]: Abstraction has 1457 states and 5350 transitions. [2019-12-18 19:43:16,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 5350 transitions. [2019-12-18 19:43:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 19:43:16,919 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:16,920 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:16,920 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1571029315, now seen corresponding path program 1 times [2019-12-18 19:43:16,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:16,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611959777] [2019-12-18 19:43:16,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:43:17,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611959777] [2019-12-18 19:43:17,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:17,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:17,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608816456] [2019-12-18 19:43:17,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:17,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:17,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:17,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:17,017 INFO L87 Difference]: Start difference. First operand 1457 states and 5350 transitions. Second operand 5 states. [2019-12-18 19:43:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:17,112 INFO L93 Difference]: Finished difference Result 1901 states and 6945 transitions. [2019-12-18 19:43:17,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:17,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 19:43:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:17,131 INFO L225 Difference]: With dead ends: 1901 [2019-12-18 19:43:17,132 INFO L226 Difference]: Without dead ends: 1901 [2019-12-18 19:43:17,132 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:17,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2019-12-18 19:43:17,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1620. [2019-12-18 19:43:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1620 states. [2019-12-18 19:43:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 5934 transitions. [2019-12-18 19:43:17,229 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 5934 transitions. Word has length 10 [2019-12-18 19:43:17,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:17,231 INFO L462 AbstractCegarLoop]: Abstraction has 1620 states and 5934 transitions. [2019-12-18 19:43:17,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:17,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 5934 transitions. [2019-12-18 19:43:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 19:43:17,233 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:17,233 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:17,233 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:17,234 INFO L82 PathProgramCache]: Analyzing trace with hash 2069312604, now seen corresponding path program 1 times [2019-12-18 19:43:17,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:17,234 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715451115] [2019-12-18 19:43:17,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:43:17,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715451115] [2019-12-18 19:43:17,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:17,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:17,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464232727] [2019-12-18 19:43:17,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:17,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:17,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:17,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:17,304 INFO L87 Difference]: Start difference. First operand 1620 states and 5934 transitions. Second operand 4 states. [2019-12-18 19:43:17,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:17,432 INFO L93 Difference]: Finished difference Result 1956 states and 7185 transitions. [2019-12-18 19:43:17,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:17,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 19:43:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:17,449 INFO L225 Difference]: With dead ends: 1956 [2019-12-18 19:43:17,449 INFO L226 Difference]: Without dead ends: 1956 [2019-12-18 19:43:17,449 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2019-12-18 19:43:17,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1716. [2019-12-18 19:43:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2019-12-18 19:43:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 6322 transitions. [2019-12-18 19:43:17,521 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 6322 transitions. Word has length 12 [2019-12-18 19:43:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:17,522 INFO L462 AbstractCegarLoop]: Abstraction has 1716 states and 6322 transitions. [2019-12-18 19:43:17,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 6322 transitions. [2019-12-18 19:43:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 19:43:17,527 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:17,527 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2019-12-18 19:43:17,527 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:17,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:17,528 INFO L82 PathProgramCache]: Analyzing trace with hash 351828682, now seen corresponding path program 1 times [2019-12-18 19:43:17,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:17,528 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632309146] [2019-12-18 19:43:17,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:17,571 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:43:17,574 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:43:17,574 WARN L364 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:43:17,575 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2019-12-18 19:43:17,582 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,583 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,583 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,585 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,585 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,586 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,587 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,587 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,588 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,591 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,591 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,591 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,591 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,591 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,592 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,592 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,592 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,593 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,596 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,597 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,597 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,597 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,597 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,597 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,598 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,598 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,598 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,598 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,598 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,599 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,599 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,599 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,599 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,599 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,602 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,603 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,603 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,605 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,605 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,606 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,606 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,606 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,608 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,608 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,608 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,609 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,609 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:17,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-18 19:43:17,611 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:43:17,611 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:43:17,612 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:43:17,612 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:43:17,612 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:43:17,612 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:43:17,612 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:43:17,612 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:43:17,614 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions [2019-12-18 19:43:17,614 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 19:43:17,639 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 19:43:17,639 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:17,641 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 19:43:17,646 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions [2019-12-18 19:43:17,670 INFO L126 PetriNetUnfolder]: 13/105 cut-off events. [2019-12-18 19:43:17,670 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:17,672 INFO L76 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 105 events. 13/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs. 44/127 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2019-12-18 19:43:17,677 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2019-12-18 19:43:17,677 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:43:18,369 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6703 [2019-12-18 19:43:18,369 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-18 19:43:18,370 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 39 transitions [2019-12-18 19:43:19,311 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 11890 states. [2019-12-18 19:43:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 11890 states. [2019-12-18 19:43:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:43:19,312 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:19,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:19,312 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1894692225, now seen corresponding path program 1 times [2019-12-18 19:43:19,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:19,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344647480] [2019-12-18 19:43:19,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:19,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344647480] [2019-12-18 19:43:19,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:19,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:19,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590877087] [2019-12-18 19:43:19,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:19,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:19,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:19,387 INFO L87 Difference]: Start difference. First operand 11890 states. Second operand 5 states. [2019-12-18 19:43:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:19,653 INFO L93 Difference]: Finished difference Result 12881 states and 59621 transitions. [2019-12-18 19:43:19,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:19,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 19:43:19,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:19,750 INFO L225 Difference]: With dead ends: 12881 [2019-12-18 19:43:19,750 INFO L226 Difference]: Without dead ends: 12881 [2019-12-18 19:43:19,751 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12881 states. [2019-12-18 19:43:20,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12881 to 10414. [2019-12-18 19:43:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10414 states. [2019-12-18 19:43:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10414 states to 10414 states and 48368 transitions. [2019-12-18 19:43:21,101 INFO L78 Accepts]: Start accepts. Automaton has 10414 states and 48368 transitions. Word has length 7 [2019-12-18 19:43:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:21,101 INFO L462 AbstractCegarLoop]: Abstraction has 10414 states and 48368 transitions. [2019-12-18 19:43:21,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:21,102 INFO L276 IsEmpty]: Start isEmpty. Operand 10414 states and 48368 transitions. [2019-12-18 19:43:21,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:43:21,102 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:21,102 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:21,103 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:21,103 INFO L82 PathProgramCache]: Analyzing trace with hash -266923908, now seen corresponding path program 1 times [2019-12-18 19:43:21,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:21,103 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827142998] [2019-12-18 19:43:21,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:21,188 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827142998] [2019-12-18 19:43:21,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:21,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:21,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528274430] [2019-12-18 19:43:21,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:21,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:21,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:21,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:21,190 INFO L87 Difference]: Start difference. First operand 10414 states and 48368 transitions. Second operand 4 states. [2019-12-18 19:43:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:21,462 INFO L93 Difference]: Finished difference Result 13720 states and 63827 transitions. [2019-12-18 19:43:21,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:21,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:43:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:21,533 INFO L225 Difference]: With dead ends: 13720 [2019-12-18 19:43:21,533 INFO L226 Difference]: Without dead ends: 13720 [2019-12-18 19:43:21,534 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2019-12-18 19:43:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 11882. [2019-12-18 19:43:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11882 states. [2019-12-18 19:43:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11882 states to 11882 states and 55338 transitions. [2019-12-18 19:43:22,183 INFO L78 Accepts]: Start accepts. Automaton has 11882 states and 55338 transitions. Word has length 9 [2019-12-18 19:43:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:22,183 INFO L462 AbstractCegarLoop]: Abstraction has 11882 states and 55338 transitions. [2019-12-18 19:43:22,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 11882 states and 55338 transitions. [2019-12-18 19:43:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 19:43:22,183 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:22,184 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:22,184 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:22,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:22,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1346173357, now seen corresponding path program 1 times [2019-12-18 19:43:22,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:22,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018888183] [2019-12-18 19:43:22,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:43:22,252 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018888183] [2019-12-18 19:43:22,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:22,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:22,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981328365] [2019-12-18 19:43:22,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:22,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:22,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:22,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:22,253 INFO L87 Difference]: Start difference. First operand 11882 states and 55338 transitions. Second operand 5 states. [2019-12-18 19:43:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:22,415 INFO L93 Difference]: Finished difference Result 14603 states and 67754 transitions. [2019-12-18 19:43:22,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:22,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 19:43:22,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:23,320 INFO L225 Difference]: With dead ends: 14603 [2019-12-18 19:43:23,320 INFO L226 Difference]: Without dead ends: 14603 [2019-12-18 19:43:23,320 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14603 states. [2019-12-18 19:43:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14603 to 12579. [2019-12-18 19:43:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12579 states. [2019-12-18 19:43:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12579 states to 12579 states and 58491 transitions. [2019-12-18 19:43:23,822 INFO L78 Accepts]: Start accepts. Automaton has 12579 states and 58491 transitions. Word has length 10 [2019-12-18 19:43:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:23,823 INFO L462 AbstractCegarLoop]: Abstraction has 12579 states and 58491 transitions. [2019-12-18 19:43:23,823 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 12579 states and 58491 transitions. [2019-12-18 19:43:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 19:43:23,824 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:23,824 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:23,824 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:23,825 INFO L82 PathProgramCache]: Analyzing trace with hash 887448628, now seen corresponding path program 1 times [2019-12-18 19:43:23,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:23,826 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942749726] [2019-12-18 19:43:23,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:43:23,881 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942749726] [2019-12-18 19:43:23,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:23,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:23,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452740861] [2019-12-18 19:43:23,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:23,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:23,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:23,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:23,882 INFO L87 Difference]: Start difference. First operand 12579 states and 58491 transitions. Second operand 4 states. [2019-12-18 19:43:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:24,526 INFO L93 Difference]: Finished difference Result 16611 states and 77337 transitions. [2019-12-18 19:43:24,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:24,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 19:43:24,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:24,608 INFO L225 Difference]: With dead ends: 16611 [2019-12-18 19:43:24,608 INFO L226 Difference]: Without dead ends: 16611 [2019-12-18 19:43:24,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16611 states. [2019-12-18 19:43:25,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16611 to 14745. [2019-12-18 19:43:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14745 states. [2019-12-18 19:43:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14745 states to 14745 states and 68743 transitions. [2019-12-18 19:43:25,387 INFO L78 Accepts]: Start accepts. Automaton has 14745 states and 68743 transitions. Word has length 12 [2019-12-18 19:43:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:25,387 INFO L462 AbstractCegarLoop]: Abstraction has 14745 states and 68743 transitions. [2019-12-18 19:43:25,387 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 14745 states and 68743 transitions. [2019-12-18 19:43:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:43:25,388 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:25,388 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:25,389 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1569221179, now seen corresponding path program 1 times [2019-12-18 19:43:25,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:25,390 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984812162] [2019-12-18 19:43:25,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:43:25,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984812162] [2019-12-18 19:43:25,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858877720] [2019-12-18 19:43:25,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:43:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:25,533 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-18 19:43:25,535 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:43:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-18 19:43:25,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:43:25,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-18 19:43:25,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962409105] [2019-12-18 19:43:25,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-18 19:43:25,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:25,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-18 19:43:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 19:43:25,603 INFO L87 Difference]: Start difference. First operand 14745 states and 68743 transitions. Second operand 9 states. [2019-12-18 19:43:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:25,871 INFO L93 Difference]: Finished difference Result 2473 states and 9025 transitions. [2019-12-18 19:43:25,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 19:43:25,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-18 19:43:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:25,879 INFO L225 Difference]: With dead ends: 2473 [2019-12-18 19:43:25,880 INFO L226 Difference]: Without dead ends: 2473 [2019-12-18 19:43:25,880 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 19:43:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2019-12-18 19:43:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1856. [2019-12-18 19:43:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1856 states. [2019-12-18 19:43:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 6612 transitions. [2019-12-18 19:43:25,920 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 6612 transitions. Word has length 13 [2019-12-18 19:43:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:25,920 INFO L462 AbstractCegarLoop]: Abstraction has 1856 states and 6612 transitions. [2019-12-18 19:43:25,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-18 19:43:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 6612 transitions. [2019-12-18 19:43:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:43:25,921 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:25,921 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:26,125 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:43:26,125 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1530307197, now seen corresponding path program 1 times [2019-12-18 19:43:26,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:26,127 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034462903] [2019-12-18 19:43:26,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 19:43:26,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034462903] [2019-12-18 19:43:26,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:26,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:26,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033582136] [2019-12-18 19:43:26,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:26,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:26,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:26,208 INFO L87 Difference]: Start difference. First operand 1856 states and 6612 transitions. Second operand 5 states. [2019-12-18 19:43:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:26,285 INFO L93 Difference]: Finished difference Result 3101 states and 11085 transitions. [2019-12-18 19:43:26,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:26,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 19:43:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:26,294 INFO L225 Difference]: With dead ends: 3101 [2019-12-18 19:43:26,294 INFO L226 Difference]: Without dead ends: 3101 [2019-12-18 19:43:26,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3101 states. [2019-12-18 19:43:26,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3101 to 2126. [2019-12-18 19:43:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2019-12-18 19:43:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 7602 transitions. [2019-12-18 19:43:26,357 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 7602 transitions. Word has length 13 [2019-12-18 19:43:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:26,357 INFO L462 AbstractCegarLoop]: Abstraction has 2126 states and 7602 transitions. [2019-12-18 19:43:26,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 7602 transitions. [2019-12-18 19:43:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:43:26,359 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:26,359 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:26,359 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:26,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1746398055, now seen corresponding path program 1 times [2019-12-18 19:43:26,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:26,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661060277] [2019-12-18 19:43:26,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 19:43:26,447 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661060277] [2019-12-18 19:43:26,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:26,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:26,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814740799] [2019-12-18 19:43:26,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:26,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:26,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:26,449 INFO L87 Difference]: Start difference. First operand 2126 states and 7602 transitions. Second operand 4 states. [2019-12-18 19:43:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:26,523 INFO L93 Difference]: Finished difference Result 1856 states and 6612 transitions. [2019-12-18 19:43:26,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:26,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-18 19:43:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:26,529 INFO L225 Difference]: With dead ends: 1856 [2019-12-18 19:43:26,530 INFO L226 Difference]: Without dead ends: 1856 [2019-12-18 19:43:26,530 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2019-12-18 19:43:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1586. [2019-12-18 19:43:26,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2019-12-18 19:43:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 5622 transitions. [2019-12-18 19:43:26,575 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 5622 transitions. Word has length 15 [2019-12-18 19:43:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:26,578 INFO L462 AbstractCegarLoop]: Abstraction has 1586 states and 5622 transitions. [2019-12-18 19:43:26,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:26,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 5622 transitions. [2019-12-18 19:43:26,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:43:26,579 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:26,579 INFO L411 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:26,580 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2019-12-18 19:43:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:26,580 INFO L82 PathProgramCache]: Analyzing trace with hash -452078714, now seen corresponding path program 1 times [2019-12-18 19:43:26,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:26,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765691588] [2019-12-18 19:43:26,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:43:26,604 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:43:26,605 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:43:26,605 WARN L364 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:43:26,605 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2019-12-18 19:43:26,616 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,617 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,618 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,619 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,619 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,620 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,621 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,621 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,622 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,622 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,623 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,623 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,623 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,624 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,624 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,624 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,625 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,625 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,626 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,627 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,628 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,628 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,629 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,629 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,631 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,631 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,632 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,632 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,634 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,634 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,635 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,635 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,637 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,638 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,640 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,640 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,641 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,641 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:43:26,643 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-18 19:43:26,643 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:43:26,644 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:43:26,644 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:43:26,644 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:43:26,644 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:43:26,644 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:43:26,644 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:43:26,644 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:43:26,646 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 83 transitions [2019-12-18 19:43:26,646 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 19:43:26,728 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 19:43:26,728 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:26,731 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 19:43:26,738 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 83 places, 83 transitions [2019-12-18 19:43:26,753 INFO L126 PetriNetUnfolder]: 16/127 cut-off events. [2019-12-18 19:43:26,753 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:43:26,755 INFO L76 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 127 events. 16/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs. 65/165 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2019-12-18 19:43:26,763 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2019-12-18 19:43:26,763 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:43:27,377 INFO L206 etLargeBlockEncoding]: Checked pairs total: 9864 [2019-12-18 19:43:27,377 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2019-12-18 19:43:27,377 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 47 transitions [2019-12-18 19:43:42,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 71348 states. [2019-12-18 19:43:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 71348 states. [2019-12-18 19:43:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 19:43:42,548 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:42,548 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:42,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1540890265, now seen corresponding path program 1 times [2019-12-18 19:43:42,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:42,549 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998693850] [2019-12-18 19:43:42,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:42,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998693850] [2019-12-18 19:43:42,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:42,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:42,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546733488] [2019-12-18 19:43:42,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:42,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:42,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:42,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:42,591 INFO L87 Difference]: Start difference. First operand 71348 states. Second operand 5 states. [2019-12-18 19:43:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:43,723 INFO L93 Difference]: Finished difference Result 73196 states and 411721 transitions. [2019-12-18 19:43:43,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:43:43,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 19:43:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:44,015 INFO L225 Difference]: With dead ends: 73196 [2019-12-18 19:43:44,016 INFO L226 Difference]: Without dead ends: 73196 [2019-12-18 19:43:44,016 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73196 states. [2019-12-18 19:43:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73196 to 60826. [2019-12-18 19:43:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60826 states. [2019-12-18 19:43:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60826 states to 60826 states and 343170 transitions. [2019-12-18 19:43:49,098 INFO L78 Accepts]: Start accepts. Automaton has 60826 states and 343170 transitions. Word has length 7 [2019-12-18 19:43:49,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:49,098 INFO L462 AbstractCegarLoop]: Abstraction has 60826 states and 343170 transitions. [2019-12-18 19:43:49,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:43:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 60826 states and 343170 transitions. [2019-12-18 19:43:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 19:43:49,098 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:49,098 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:49,099 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:49,099 INFO L82 PathProgramCache]: Analyzing trace with hash 968163332, now seen corresponding path program 1 times [2019-12-18 19:43:49,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:49,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226734555] [2019-12-18 19:43:49,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:43:49,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226734555] [2019-12-18 19:43:49,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:49,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:49,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734321421] [2019-12-18 19:43:49,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:43:49,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:43:49,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:49,172 INFO L87 Difference]: Start difference. First operand 60826 states and 343170 transitions. Second operand 4 states. [2019-12-18 19:43:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:43:50,675 INFO L93 Difference]: Finished difference Result 82861 states and 467763 transitions. [2019-12-18 19:43:50,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:43:50,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 19:43:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:43:51,029 INFO L225 Difference]: With dead ends: 82861 [2019-12-18 19:43:51,030 INFO L226 Difference]: Without dead ends: 82861 [2019-12-18 19:43:51,030 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:43:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82861 states. [2019-12-18 19:43:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82861 to 72662. [2019-12-18 19:43:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72662 states. [2019-12-18 19:43:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72662 states to 72662 states and 410462 transitions. [2019-12-18 19:43:57,836 INFO L78 Accepts]: Start accepts. Automaton has 72662 states and 410462 transitions. Word has length 9 [2019-12-18 19:43:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:43:57,836 INFO L462 AbstractCegarLoop]: Abstraction has 72662 states and 410462 transitions. [2019-12-18 19:43:57,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:43:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 72662 states and 410462 transitions. [2019-12-18 19:43:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 19:43:57,836 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:43:57,837 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:43:57,837 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:43:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:43:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1544155962, now seen corresponding path program 1 times [2019-12-18 19:43:57,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:43:57,839 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85789796] [2019-12-18 19:43:57,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:43:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:43:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:43:57,892 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85789796] [2019-12-18 19:43:57,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:43:57,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:43:57,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508391329] [2019-12-18 19:43:57,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:43:57,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:43:57,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:43:57,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:43:57,895 INFO L87 Difference]: Start difference. First operand 72662 states and 410462 transitions. Second operand 5 states. [2019-12-18 19:44:02,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:02,805 INFO L93 Difference]: Finished difference Result 87146 states and 490768 transitions. [2019-12-18 19:44:02,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:44:02,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 19:44:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:03,166 INFO L225 Difference]: With dead ends: 87146 [2019-12-18 19:44:03,166 INFO L226 Difference]: Without dead ends: 87146 [2019-12-18 19:44:03,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:44:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87146 states. [2019-12-18 19:44:05,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87146 to 75561. [2019-12-18 19:44:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75561 states. [2019-12-18 19:44:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75561 states to 75561 states and 426384 transitions. [2019-12-18 19:44:06,076 INFO L78 Accepts]: Start accepts. Automaton has 75561 states and 426384 transitions. Word has length 10 [2019-12-18 19:44:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:06,076 INFO L462 AbstractCegarLoop]: Abstraction has 75561 states and 426384 transitions. [2019-12-18 19:44:06,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:44:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 75561 states and 426384 transitions. [2019-12-18 19:44:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-18 19:44:06,077 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:06,077 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:06,077 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:06,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2124830999, now seen corresponding path program 1 times [2019-12-18 19:44:06,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:06,078 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331272033] [2019-12-18 19:44:06,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-18 19:44:06,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331272033] [2019-12-18 19:44:06,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:06,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:06,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548788892] [2019-12-18 19:44:06,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:06,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:06,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:06,125 INFO L87 Difference]: Start difference. First operand 75561 states and 426384 transitions. Second operand 4 states. [2019-12-18 19:44:08,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:08,031 INFO L93 Difference]: Finished difference Result 108084 states and 610107 transitions. [2019-12-18 19:44:08,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:44:08,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-18 19:44:08,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:08,452 INFO L225 Difference]: With dead ends: 108084 [2019-12-18 19:44:08,452 INFO L226 Difference]: Without dead ends: 108084 [2019-12-18 19:44:08,453 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108084 states. [2019-12-18 19:44:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108084 to 95076. [2019-12-18 19:44:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95076 states. [2019-12-18 19:44:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95076 states to 95076 states and 537109 transitions. [2019-12-18 19:44:18,420 INFO L78 Accepts]: Start accepts. Automaton has 95076 states and 537109 transitions. Word has length 12 [2019-12-18 19:44:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:18,420 INFO L462 AbstractCegarLoop]: Abstraction has 95076 states and 537109 transitions. [2019-12-18 19:44:18,420 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 95076 states and 537109 transitions. [2019-12-18 19:44:18,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:44:18,422 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:18,422 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:18,422 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:18,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:18,422 INFO L82 PathProgramCache]: Analyzing trace with hash -566157841, now seen corresponding path program 1 times [2019-12-18 19:44:18,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:18,423 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291356989] [2019-12-18 19:44:18,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:18,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291356989] [2019-12-18 19:44:18,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039851547] [2019-12-18 19:44:18,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:44:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:18,545 INFO L264 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2019-12-18 19:44:18,548 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-18 19:44:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 19:44:18,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-18 19:44:18,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2019-12-18 19:44:18,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818952962] [2019-12-18 19:44:18,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-18 19:44:18,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:18,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-18 19:44:18,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 19:44:18,626 INFO L87 Difference]: Start difference. First operand 95076 states and 537109 transitions. Second operand 9 states. [2019-12-18 19:44:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:18,996 INFO L93 Difference]: Finished difference Result 9215 states and 39414 transitions. [2019-12-18 19:44:18,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-18 19:44:18,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-18 19:44:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:19,027 INFO L225 Difference]: With dead ends: 9215 [2019-12-18 19:44:19,027 INFO L226 Difference]: Without dead ends: 9215 [2019-12-18 19:44:19,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-18 19:44:19,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9215 states. [2019-12-18 19:44:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9215 to 7375. [2019-12-18 19:44:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7375 states. [2019-12-18 19:44:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 31180 transitions. [2019-12-18 19:44:19,229 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 31180 transitions. Word has length 13 [2019-12-18 19:44:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:19,229 INFO L462 AbstractCegarLoop]: Abstraction has 7375 states and 31180 transitions. [2019-12-18 19:44:19,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-18 19:44:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 31180 transitions. [2019-12-18 19:44:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-18 19:44:19,230 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:19,230 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:19,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-18 19:44:19,431 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:19,431 INFO L82 PathProgramCache]: Analyzing trace with hash 877704894, now seen corresponding path program 1 times [2019-12-18 19:44:19,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:19,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420441332] [2019-12-18 19:44:19,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 19:44:19,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420441332] [2019-12-18 19:44:19,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:19,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:19,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213069097] [2019-12-18 19:44:19,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:44:19,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:19,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:44:19,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:44:19,497 INFO L87 Difference]: Start difference. First operand 7375 states and 31180 transitions. Second operand 5 states. [2019-12-18 19:44:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:19,661 INFO L93 Difference]: Finished difference Result 12733 states and 53782 transitions. [2019-12-18 19:44:19,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:44:19,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-18 19:44:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:19,691 INFO L225 Difference]: With dead ends: 12733 [2019-12-18 19:44:19,691 INFO L226 Difference]: Without dead ends: 12733 [2019-12-18 19:44:19,692 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:44:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12733 states. [2019-12-18 19:44:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12733 to 8239. [2019-12-18 19:44:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8239 states. [2019-12-18 19:44:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 34870 transitions. [2019-12-18 19:44:19,886 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 34870 transitions. Word has length 13 [2019-12-18 19:44:19,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:19,887 INFO L462 AbstractCegarLoop]: Abstraction has 8239 states and 34870 transitions. [2019-12-18 19:44:19,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:44:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 34870 transitions. [2019-12-18 19:44:19,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 19:44:19,888 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:19,889 INFO L411 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:19,889 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:19,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:19,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1660813028, now seen corresponding path program 1 times [2019-12-18 19:44:19,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:19,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545102087] [2019-12-18 19:44:19,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-18 19:44:19,948 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545102087] [2019-12-18 19:44:19,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:19,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:19,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105519493] [2019-12-18 19:44:19,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 19:44:19,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:19,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 19:44:19,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:19,953 INFO L87 Difference]: Start difference. First operand 8239 states and 34870 transitions. Second operand 4 states. [2019-12-18 19:44:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:20,086 INFO L93 Difference]: Finished difference Result 7375 states and 31180 transitions. [2019-12-18 19:44:20,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 19:44:20,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-18 19:44:20,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:20,111 INFO L225 Difference]: With dead ends: 7375 [2019-12-18 19:44:20,111 INFO L226 Difference]: Without dead ends: 7375 [2019-12-18 19:44:20,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 19:44:20,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-12-18 19:44:21,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 6511. [2019-12-18 19:44:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6511 states. [2019-12-18 19:44:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 27490 transitions. [2019-12-18 19:44:21,834 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 27490 transitions. Word has length 15 [2019-12-18 19:44:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:21,835 INFO L462 AbstractCegarLoop]: Abstraction has 6511 states and 27490 transitions. [2019-12-18 19:44:21,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 19:44:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 27490 transitions. [2019-12-18 19:44:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-18 19:44:21,840 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:21,840 INFO L411 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:21,840 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:21,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1615225847, now seen corresponding path program 1 times [2019-12-18 19:44:21,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:21,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828949508] [2019-12-18 19:44:21,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 19:44:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-12-18 19:44:21,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828949508] [2019-12-18 19:44:21,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 19:44:21,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 19:44:21,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67684184] [2019-12-18 19:44:21,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 19:44:21,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 19:44:21,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 19:44:21,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:44:21,905 INFO L87 Difference]: Start difference. First operand 6511 states and 27490 transitions. Second operand 5 states. [2019-12-18 19:44:22,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 19:44:22,077 INFO L93 Difference]: Finished difference Result 11230 states and 47524 transitions. [2019-12-18 19:44:22,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 19:44:22,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-12-18 19:44:22,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 19:44:22,116 INFO L225 Difference]: With dead ends: 11230 [2019-12-18 19:44:22,116 INFO L226 Difference]: Without dead ends: 11230 [2019-12-18 19:44:22,116 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 19:44:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2019-12-18 19:44:22,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 7321. [2019-12-18 19:44:22,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7321 states. [2019-12-18 19:44:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 31000 transitions. [2019-12-18 19:44:22,370 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 31000 transitions. Word has length 16 [2019-12-18 19:44:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 19:44:22,371 INFO L462 AbstractCegarLoop]: Abstraction has 7321 states and 31000 transitions. [2019-12-18 19:44:22,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 19:44:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 31000 transitions. [2019-12-18 19:44:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 19:44:22,375 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 19:44:22,375 INFO L411 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 19:44:22,375 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 19:44:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 19:44:22,376 INFO L82 PathProgramCache]: Analyzing trace with hash 501178303, now seen corresponding path program 1 times [2019-12-18 19:44:22,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 19:44:22,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955761843] [2019-12-18 19:44:22,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 19:44:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:44:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-18 19:44:22,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-18 19:44:22,403 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-18 19:44:22,405 WARN L364 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2019-12-18 19:44:22,405 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2019-12-18 19:44:22,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,417 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,418 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,418 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,418 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,419 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,420 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,420 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,420 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,421 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,422 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,423 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,423 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,423 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,423 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,423 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,424 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,425 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,425 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,425 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,425 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,426 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,426 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,427 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,427 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,428 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,428 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,429 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,430 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,430 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,431 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,431 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,433 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,433 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,433 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,434 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,437 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,437 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,438 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,438 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,438 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,440 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,440 WARN L315 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,442 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,443 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,443 WARN L315 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,445 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,446 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,446 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,446 WARN L315 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 19:44:22,447 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-18 19:44:22,448 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 19:44:22,448 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 19:44:22,448 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 19:44:22,448 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 19:44:22,448 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 19:44:22,448 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 19:44:22,448 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 19:44:22,449 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 19:44:22,450 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions [2019-12-18 19:44:22,450 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 19:44:22,469 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 19:44:22,469 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:22,472 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 414 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 19:44:22,483 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions [2019-12-18 19:44:22,501 INFO L126 PetriNetUnfolder]: 19/149 cut-off events. [2019-12-18 19:44:22,502 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 19:44:22,505 INFO L76 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 149 events. 19/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 414 event pairs. 90/207 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2019-12-18 19:44:22,516 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2019-12-18 19:44:22,516 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 19:44:23,320 INFO L206 etLargeBlockEncoding]: Checked pairs total: 16552 [2019-12-18 19:44:23,320 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2019-12-18 19:44:23,321 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 57 transitions Received shutdown request... [2019-12-18 19:47:14,367 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 19:47:14,370 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 19:47:14,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:47:14 BasicIcfg [2019-12-18 19:47:14,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 19:47:14,372 INFO L168 Benchmark]: Toolchain (without parser) took 242621.13 ms. Allocated memory was 145.8 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 101.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,373 INFO L168 Benchmark]: CDTParser took 1.68 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.53 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,375 INFO L168 Benchmark]: Boogie Preprocessor took 23.51 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,375 INFO L168 Benchmark]: RCFGBuilder took 381.47 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 143.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,376 INFO L168 Benchmark]: TraceAbstraction took 241426.58 ms. Allocated memory was 203.9 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 143.3 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2019-12-18 19:47:14,379 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.68 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.53 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 100.8 MB in the beginning and 162.7 MB in the end (delta: -62.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.55 ms. Allocated memory is still 203.9 MB. Free memory was 162.7 MB in the beginning and 160.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.51 ms. Allocated memory is still 203.9 MB. Free memory was 160.8 MB in the beginning and 159.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.47 ms. Allocated memory is still 203.9 MB. Free memory was 159.5 MB in the beginning and 143.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241426.58 ms. Allocated memory was 203.9 MB in the beginning and 2.7 GB in the end (delta: 2.4 GB). Free memory was 143.3 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 31 ProgramPointsBefore, 10 ProgramPointsAfterwards, 31 TransitionsBefore, 10 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 111 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 169 CheckedPairsTotal, 27 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 44 ProgramPointsBefore, 20 ProgramPointsAfterwards, 44 TransitionsBefore, 21 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 2 ChoiceCompositions, 389 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1527 CheckedPairsTotal, 28 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 57 ProgramPointsBefore, 27 ProgramPointsAfterwards, 57 TransitionsBefore, 29 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 768 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 3846 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 70 ProgramPointsBefore, 36 ProgramPointsAfterwards, 70 TransitionsBefore, 39 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 1273 VarBasedMoverChecksPositive, 44 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6703 CheckedPairsTotal, 43 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 83 ProgramPointsBefore, 43 ProgramPointsAfterwards, 83 TransitionsBefore, 47 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 1865 VarBasedMoverChecksPositive, 51 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 9864 CheckedPairsTotal, 53 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 96 ProgramPointsBefore, 52 ProgramPointsAfterwards, 96 TransitionsBefore, 57 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 5 FixpointIterations, 7 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 2749 VarBasedMoverChecksPositive, 64 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 16552 CheckedPairsTotal, 57 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 687]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 687). Cancelled while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 52 places, 57 transitions. Already constructed 288111 states. Currently 56697 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Result: TIMEOUT, OverallTime: 171.9s, OverallIterations: 0, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown