/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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/mix020_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 16:40:25,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 16:40:25,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 16:40:25,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 16:40:25,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 16:40:25,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 16:40:25,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 16:40:25,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 16:40:25,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 16:40:25,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 16:40:25,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 16:40:25,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 16:40:25,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 16:40:25,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 16:40:25,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 16:40:25,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 16:40:25,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 16:40:25,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 16:40:25,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 16:40:25,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 16:40:25,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 16:40:25,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 16:40:25,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 16:40:25,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 16:40:25,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 16:40:25,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 16:40:25,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 16:40:25,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 16:40:25,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 16:40:25,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 16:40:25,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 16:40:25,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 16:40:25,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 16:40:25,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 16:40:25,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 16:40:25,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 16:40:25,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 16:40:25,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 16:40:25,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 16:40:25,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 16:40:25,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 16:40:25,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2019-12-18 16:40:25,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 16:40:25,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 16:40:25,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 16:40:25,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 16:40:25,384 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 16:40:25,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 16:40:25,384 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 16:40:25,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 16:40:25,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 16:40:25,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 16:40:25,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 16:40:25,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 16:40:25,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 16:40:25,387 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 16:40:25,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 16:40:25,388 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 16:40:25,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 16:40:25,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 16:40:25,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 16:40:25,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 16:40:25,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 16:40:25,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 16:40:25,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 16:40:25,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 16:40:25,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 16:40:25,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 16:40:25,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 16:40:25,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 16:40:25,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 16:40:25,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 16:40:25,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 16:40:25,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 16:40:25,748 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 16:40:25,749 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 16:40:25,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix020_rmo.opt.i [2019-12-18 16:40:25,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5408c1451/bbdb3f7b8806443cb3fc0b51b04133a7/FLAGd676b558b [2019-12-18 16:40:26,360 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 16:40:26,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020_rmo.opt.i [2019-12-18 16:40:26,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5408c1451/bbdb3f7b8806443cb3fc0b51b04133a7/FLAGd676b558b [2019-12-18 16:40:26,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5408c1451/bbdb3f7b8806443cb3fc0b51b04133a7 [2019-12-18 16:40:26,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 16:40:26,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 16:40:26,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 16:40:26,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 16:40:26,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 16:40:26,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:40:26" (1/1) ... [2019-12-18 16:40:26,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115225be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:26, skipping insertion in model container [2019-12-18 16:40:26,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:40:26" (1/1) ... [2019-12-18 16:40:26,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 16:40:26,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 16:40:27,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 16:40:27,215 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 16:40:27,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 16:40:27,387 INFO L208 MainTranslator]: Completed translation [2019-12-18 16:40:27,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27 WrapperNode [2019-12-18 16:40:27,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 16:40:27,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 16:40:27,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 16:40:27,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 16:40:27,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 16:40:27,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 16:40:27,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 16:40:27,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 16:40:27,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (1/1) ... [2019-12-18 16:40:27,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 16:40:27,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 16:40:27,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 16:40:27,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 16:40:27,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (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 16:40:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 16:40:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 16:40:27,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 16:40:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 16:40:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 16:40:27,591 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 16:40:27,591 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 16:40:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 16:40:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 16:40:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 16:40:27,592 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-18 16:40:27,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-18 16:40:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 16:40:27,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 16:40:27,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 16:40:27,595 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 16:40:28,615 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 16:40:28,615 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-18 16:40:28,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:40:28 BoogieIcfgContainer [2019-12-18 16:40:28,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 16:40:28,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 16:40:28,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 16:40:28,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 16:40:28,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:40:26" (1/3) ... [2019-12-18 16:40:28,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4118cbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:40:28, skipping insertion in model container [2019-12-18 16:40:28,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:40:27" (2/3) ... [2019-12-18 16:40:28,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4118cbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:40:28, skipping insertion in model container [2019-12-18 16:40:28,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:40:28" (3/3) ... [2019-12-18 16:40:28,626 INFO L109 eAbstractionObserver]: Analyzing ICFG mix020_rmo.opt.i [2019-12-18 16:40:28,637 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 16:40:28,637 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 16:40:28,645 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-18 16:40:28,646 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 16:40:28,708 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,709 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,709 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,709 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,710 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,710 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,710 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,711 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,711 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,711 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,711 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,712 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,712 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,713 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,713 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,713 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,714 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,714 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,714 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,715 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,715 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,715 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,715 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,716 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,717 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,718 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,719 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,719 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,719 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,719 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,719 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,720 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,721 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,721 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,721 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,721 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,721 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,722 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,723 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,723 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,723 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,723 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,723 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,724 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,724 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,724 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,724 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,724 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,727 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,728 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,728 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,728 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,728 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,729 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,729 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,729 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,729 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,729 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,730 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,730 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,730 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,730 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,731 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,731 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,731 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,731 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,731 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,732 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,733 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,734 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,734 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,735 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,735 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,735 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,735 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,735 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,736 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,736 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,737 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,737 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,737 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,737 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,737 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,738 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,739 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,739 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,739 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,739 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,739 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,740 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,740 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,740 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,740 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,740 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,741 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,741 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,741 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,741 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,741 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,742 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,742 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,742 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,742 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,742 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,743 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,743 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,743 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,743 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,743 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,744 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,745 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,745 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,745 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,745 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,745 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,746 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,746 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,746 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,746 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,746 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,747 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,747 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,747 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,747 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,747 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,748 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,748 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,748 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,748 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,748 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,749 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,749 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,749 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,749 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,749 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,750 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,751 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,751 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,751 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,751 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,751 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,752 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,753 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,753 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,753 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,753 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,753 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite51| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite51| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,754 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite51| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite51| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite52| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,755 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite52| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,756 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite52| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,756 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite52| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,756 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite53| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,756 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite53| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,756 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite53| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,757 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite53| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,757 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite54| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,757 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite54| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,757 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite54| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,757 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite54| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,758 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,758 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,761 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,762 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,762 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,762 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,772 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,780 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite24| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite25| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,781 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,783 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,783 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,783 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,784 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,785 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,786 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#t~ite19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,797 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite51| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,797 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite52| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,798 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite53| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,798 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite54| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,798 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,798 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,798 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,799 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,800 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,800 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,800 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,800 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,800 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet26| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~nondet27| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,801 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,802 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,803 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite29| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,803 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite28| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,803 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,803 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite41| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,803 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#t~ite40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,806 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,806 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,806 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,806 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 16:40:28,821 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-12-18 16:40:28,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 16:40:28,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 16:40:28,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 16:40:28,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 16:40:28,844 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 16:40:28,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 16:40:28,844 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 16:40:28,844 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 16:40:28,868 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 254 transitions [2019-12-18 16:40:28,869 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 211 places, 254 transitions [2019-12-18 16:40:28,998 INFO L126 PetriNetUnfolder]: 56/250 cut-off events. [2019-12-18 16:40:28,998 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 16:40:29,024 INFO L76 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 56/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 574 event pairs. 12/204 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2019-12-18 16:40:29,064 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 211 places, 254 transitions [2019-12-18 16:40:29,136 INFO L126 PetriNetUnfolder]: 56/250 cut-off events. [2019-12-18 16:40:29,137 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 16:40:29,150 INFO L76 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 250 events. 56/250 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 574 event pairs. 12/204 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2019-12-18 16:40:29,186 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 26510 [2019-12-18 16:40:29,187 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 16:40:36,099 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2019-12-18 16:40:36,239 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-12-18 16:40:36,271 INFO L206 etLargeBlockEncoding]: Checked pairs total: 142340 [2019-12-18 16:40:36,271 INFO L214 etLargeBlockEncoding]: Total number of compositions: 134 [2019-12-18 16:40:36,275 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 131 transitions [2019-12-18 16:40:47,094 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90046 states. [2019-12-18 16:40:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 90046 states. [2019-12-18 16:40:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 16:40:47,107 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:40:47,108 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:40:47,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:40:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:40:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 259811849, now seen corresponding path program 1 times [2019-12-18 16:40:47,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:40:47,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350747715] [2019-12-18 16:40:47,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:40:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:40:47,487 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 16:40:47,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350747715] [2019-12-18 16:40:47,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:40:47,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 16:40:47,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273670361] [2019-12-18 16:40:47,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 16:40:47,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:40:47,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 16:40:47,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:40:47,516 INFO L87 Difference]: Start difference. First operand 90046 states. Second operand 3 states. [2019-12-18 16:40:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:40:49,323 INFO L93 Difference]: Finished difference Result 89182 states and 411616 transitions. [2019-12-18 16:40:49,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 16:40:49,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 16:40:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:40:50,002 INFO L225 Difference]: With dead ends: 89182 [2019-12-18 16:40:50,002 INFO L226 Difference]: Without dead ends: 83470 [2019-12-18 16:40:50,003 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:40:54,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83470 states. [2019-12-18 16:40:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83470 to 83470. [2019-12-18 16:40:56,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83470 states. [2019-12-18 16:40:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83470 states to 83470 states and 385016 transitions. [2019-12-18 16:40:57,521 INFO L78 Accepts]: Start accepts. Automaton has 83470 states and 385016 transitions. Word has length 9 [2019-12-18 16:40:57,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:40:57,522 INFO L462 AbstractCegarLoop]: Abstraction has 83470 states and 385016 transitions. [2019-12-18 16:40:57,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 16:40:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 83470 states and 385016 transitions. [2019-12-18 16:40:57,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-18 16:40:57,540 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:40:57,540 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:40:57,540 INFO L410 AbstractCegarLoop]: === Iteration 2 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:40:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:40:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1558204525, now seen corresponding path program 1 times [2019-12-18 16:40:57,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:40:57,542 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270350116] [2019-12-18 16:40:57,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:40:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:40:57,693 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 16:40:57,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270350116] [2019-12-18 16:40:57,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:40:57,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 16:40:57,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791397827] [2019-12-18 16:40:57,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 16:40:57,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:40:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 16:40:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 16:40:57,698 INFO L87 Difference]: Start difference. First operand 83470 states and 385016 transitions. Second operand 4 states. [2019-12-18 16:41:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:41:02,568 INFO L93 Difference]: Finished difference Result 129310 states and 576248 transitions. [2019-12-18 16:41:02,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 16:41:02,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-18 16:41:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:41:03,200 INFO L225 Difference]: With dead ends: 129310 [2019-12-18 16:41:03,200 INFO L226 Difference]: Without dead ends: 129254 [2019-12-18 16:41:03,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 16:41:05,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129254 states. [2019-12-18 16:41:08,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129254 to 124642. [2019-12-18 16:41:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124642 states. [2019-12-18 16:41:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124642 states to 124642 states and 558856 transitions. [2019-12-18 16:41:14,760 INFO L78 Accepts]: Start accepts. Automaton has 124642 states and 558856 transitions. Word has length 15 [2019-12-18 16:41:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:41:14,760 INFO L462 AbstractCegarLoop]: Abstraction has 124642 states and 558856 transitions. [2019-12-18 16:41:14,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 16:41:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 124642 states and 558856 transitions. [2019-12-18 16:41:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-18 16:41:14,770 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:41:14,770 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:41:14,770 INFO L410 AbstractCegarLoop]: === Iteration 3 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:41:14,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:41:14,771 INFO L82 PathProgramCache]: Analyzing trace with hash -545556496, now seen corresponding path program 1 times [2019-12-18 16:41:14,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:41:14,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584736066] [2019-12-18 16:41:14,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:41:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:41:14,846 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 16:41:14,851 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584736066] [2019-12-18 16:41:14,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:41:14,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 16:41:14,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984603075] [2019-12-18 16:41:14,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 16:41:14,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:41:14,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 16:41:14,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 16:41:14,853 INFO L87 Difference]: Start difference. First operand 124642 states and 558856 transitions. Second operand 4 states. [2019-12-18 16:41:20,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:41:20,821 INFO L93 Difference]: Finished difference Result 158782 states and 702836 transitions. [2019-12-18 16:41:20,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 16:41:20,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-18 16:41:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:41:21,342 INFO L225 Difference]: With dead ends: 158782 [2019-12-18 16:41:21,343 INFO L226 Difference]: Without dead ends: 158730 [2019-12-18 16:41:21,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 16:41:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158730 states. [2019-12-18 16:41:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158730 to 142378. [2019-12-18 16:41:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142378 states. [2019-12-18 16:41:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142378 states to 142378 states and 635380 transitions. [2019-12-18 16:41:33,546 INFO L78 Accepts]: Start accepts. Automaton has 142378 states and 635380 transitions. Word has length 18 [2019-12-18 16:41:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:41:33,546 INFO L462 AbstractCegarLoop]: Abstraction has 142378 states and 635380 transitions. [2019-12-18 16:41:33,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 16:41:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 142378 states and 635380 transitions. [2019-12-18 16:41:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-18 16:41:33,562 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:41:33,562 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:41:33,562 INFO L410 AbstractCegarLoop]: === Iteration 4 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:41:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:41:33,562 INFO L82 PathProgramCache]: Analyzing trace with hash 267646308, now seen corresponding path program 1 times [2019-12-18 16:41:33,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:41:33,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316172417] [2019-12-18 16:41:33,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:41:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:41:33,633 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 16:41:33,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316172417] [2019-12-18 16:41:33,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:41:33,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 16:41:33,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989275577] [2019-12-18 16:41:33,635 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 16:41:33,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:41:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 16:41:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:41:33,636 INFO L87 Difference]: Start difference. First operand 142378 states and 635380 transitions. Second operand 3 states. [2019-12-18 16:41:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:41:36,585 INFO L93 Difference]: Finished difference Result 243978 states and 1046540 transitions. [2019-12-18 16:41:36,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 16:41:36,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-12-18 16:41:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:41:37,403 INFO L225 Difference]: With dead ends: 243978 [2019-12-18 16:41:37,403 INFO L226 Difference]: Without dead ends: 243978 [2019-12-18 16:41:37,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:41:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243978 states. [2019-12-18 16:41:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243978 to 220082. [2019-12-18 16:41:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220082 states. [2019-12-18 16:41:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220082 states to 220082 states and 955428 transitions. [2019-12-18 16:41:52,682 INFO L78 Accepts]: Start accepts. Automaton has 220082 states and 955428 transitions. Word has length 19 [2019-12-18 16:41:52,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:41:52,682 INFO L462 AbstractCegarLoop]: Abstraction has 220082 states and 955428 transitions. [2019-12-18 16:41:52,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 16:41:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 220082 states and 955428 transitions. [2019-12-18 16:41:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-18 16:41:52,702 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:41:52,703 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:41:52,703 INFO L410 AbstractCegarLoop]: === Iteration 5 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:41:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:41:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash -993922956, now seen corresponding path program 1 times [2019-12-18 16:41:52,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:41:52,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167812801] [2019-12-18 16:41:52,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:41:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:41:52,759 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 16:41:52,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167812801] [2019-12-18 16:41:52,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:41:52,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 16:41:52,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002258396] [2019-12-18 16:41:52,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 16:41:52,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:41:52,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 16:41:52,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:41:52,761 INFO L87 Difference]: Start difference. First operand 220082 states and 955428 transitions. Second operand 3 states. [2019-12-18 16:41:59,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:41:59,851 INFO L93 Difference]: Finished difference Result 208030 states and 902200 transitions. [2019-12-18 16:41:59,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 16:41:59,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-12-18 16:41:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:42:01,409 INFO L225 Difference]: With dead ends: 208030 [2019-12-18 16:42:01,409 INFO L226 Difference]: Without dead ends: 208030 [2019-12-18 16:42:01,409 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:42:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208030 states. [2019-12-18 16:42:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208030 to 208030. [2019-12-18 16:42:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208030 states. [2019-12-18 16:42:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208030 states to 208030 states and 902200 transitions. [2019-12-18 16:42:13,169 INFO L78 Accepts]: Start accepts. Automaton has 208030 states and 902200 transitions. Word has length 20 [2019-12-18 16:42:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:42:13,169 INFO L462 AbstractCegarLoop]: Abstraction has 208030 states and 902200 transitions. [2019-12-18 16:42:13,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 16:42:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 208030 states and 902200 transitions. [2019-12-18 16:42:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-18 16:42:13,189 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:42:13,189 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:42:13,189 INFO L410 AbstractCegarLoop]: === Iteration 6 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:42:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:42:13,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1950965462, now seen corresponding path program 1 times [2019-12-18 16:42:13,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:42:13,190 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772049279] [2019-12-18 16:42:13,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:42:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:42:13,264 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 16:42:13,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772049279] [2019-12-18 16:42:13,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:42:13,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 16:42:13,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803769450] [2019-12-18 16:42:13,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 16:42:13,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:42:13,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 16:42:13,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 16:42:13,267 INFO L87 Difference]: Start difference. First operand 208030 states and 902200 transitions. Second operand 4 states. [2019-12-18 16:42:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:42:21,008 INFO L93 Difference]: Finished difference Result 258726 states and 1108448 transitions. [2019-12-18 16:42:21,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 16:42:21,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2019-12-18 16:42:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:42:22,677 INFO L225 Difference]: With dead ends: 258726 [2019-12-18 16:42:22,677 INFO L226 Difference]: Without dead ends: 258658 [2019-12-18 16:42:22,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 16:42:30,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258658 states. [2019-12-18 16:42:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258658 to 211214. [2019-12-18 16:42:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211214 states. [2019-12-18 16:42:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211214 states to 211214 states and 915696 transitions. [2019-12-18 16:42:36,582 INFO L78 Accepts]: Start accepts. Automaton has 211214 states and 915696 transitions. Word has length 21 [2019-12-18 16:42:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:42:36,582 INFO L462 AbstractCegarLoop]: Abstraction has 211214 states and 915696 transitions. [2019-12-18 16:42:36,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 16:42:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 211214 states and 915696 transitions. [2019-12-18 16:42:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-18 16:42:36,628 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:42:36,629 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:42:36,629 INFO L410 AbstractCegarLoop]: === Iteration 7 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:42:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:42:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1910405908, now seen corresponding path program 1 times [2019-12-18 16:42:36,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:42:36,630 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954245789] [2019-12-18 16:42:36,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:42:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:42:36,750 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 16:42:36,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954245789] [2019-12-18 16:42:36,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:42:36,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 16:42:36,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691034155] [2019-12-18 16:42:36,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 16:42:36,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:42:36,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 16:42:36,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 16:42:36,753 INFO L87 Difference]: Start difference. First operand 211214 states and 915696 transitions. Second operand 5 states. [2019-12-18 16:42:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:42:46,481 INFO L93 Difference]: Finished difference Result 296514 states and 1260128 transitions. [2019-12-18 16:42:46,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-18 16:42:46,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-12-18 16:42:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:42:47,501 INFO L225 Difference]: With dead ends: 296514 [2019-12-18 16:42:47,502 INFO L226 Difference]: Without dead ends: 296458 [2019-12-18 16:42:47,502 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-18 16:42:50,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296458 states. [2019-12-18 16:42:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296458 to 230654. [2019-12-18 16:42:55,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230654 states. [2019-12-18 16:42:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230654 states to 230654 states and 995852 transitions. [2019-12-18 16:42:57,482 INFO L78 Accepts]: Start accepts. Automaton has 230654 states and 995852 transitions. Word has length 24 [2019-12-18 16:42:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:42:57,483 INFO L462 AbstractCegarLoop]: Abstraction has 230654 states and 995852 transitions. [2019-12-18 16:42:57,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 16:42:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 230654 states and 995852 transitions. [2019-12-18 16:42:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-18 16:42:57,580 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:42:57,580 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:42:57,580 INFO L410 AbstractCegarLoop]: === Iteration 8 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:42:57,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:42:57,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1719472782, now seen corresponding path program 1 times [2019-12-18 16:42:57,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:42:57,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180845062] [2019-12-18 16:42:57,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:42:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:42:57,687 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 16:42:57,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180845062] [2019-12-18 16:42:57,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:42:57,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 16:42:57,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615157221] [2019-12-18 16:42:57,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 16:42:57,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:42:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 16:42:57,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-18 16:42:57,690 INFO L87 Difference]: Start difference. First operand 230654 states and 995852 transitions. Second operand 5 states. [2019-12-18 16:43:07,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:43:07,049 INFO L93 Difference]: Finished difference Result 306554 states and 1302104 transitions. [2019-12-18 16:43:07,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-18 16:43:07,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-12-18 16:43:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:43:08,890 INFO L225 Difference]: With dead ends: 306554 [2019-12-18 16:43:08,890 INFO L226 Difference]: Without dead ends: 306442 [2019-12-18 16:43:08,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-18 16:43:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306442 states. [2019-12-18 16:43:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306442 to 215150. [2019-12-18 16:43:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215150 states. [2019-12-18 16:43:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215150 states to 215150 states and 930748 transitions. [2019-12-18 16:43:18,036 INFO L78 Accepts]: Start accepts. Automaton has 215150 states and 930748 transitions. Word has length 27 [2019-12-18 16:43:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 16:43:18,037 INFO L462 AbstractCegarLoop]: Abstraction has 215150 states and 930748 transitions. [2019-12-18 16:43:18,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 16:43:18,037 INFO L276 IsEmpty]: Start isEmpty. Operand 215150 states and 930748 transitions. [2019-12-18 16:43:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-12-18 16:43:18,312 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 16:43:18,312 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 16:43:18,312 INFO L410 AbstractCegarLoop]: === Iteration 9 === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 16:43:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 16:43:18,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1681941858, now seen corresponding path program 1 times [2019-12-18 16:43:18,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 16:43:18,313 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772886230] [2019-12-18 16:43:18,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 16:43:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 16:43:18,377 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 16:43:18,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772886230] [2019-12-18 16:43:18,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 16:43:18,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 16:43:18,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279585430] [2019-12-18 16:43:18,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 16:43:18,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 16:43:18,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 16:43:18,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 16:43:18,379 INFO L87 Difference]: Start difference. First operand 215150 states and 930748 transitions. Second operand 3 states. [2019-12-18 16:43:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 16:43:25,822 INFO L93 Difference]: Finished difference Result 215098 states and 930516 transitions. [2019-12-18 16:43:25,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 16:43:25,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-12-18 16:43:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 16:43:26,540 INFO L225 Difference]: With dead ends: 215098 [2019-12-18 16:43:26,540 INFO L226 Difference]: Without dead ends: 215098 [2019-12-18 16:43:26,540 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 Received shutdown request... [2019-12-18 16:43:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215098 states. [2019-12-18 16:43:29,130 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-18 16:43:29,132 WARN L227 ceAbstractionStarter]: Timeout [2019-12-18 16:43:29,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 04:43:29 BasicIcfg [2019-12-18 16:43:29,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 16:43:29,135 INFO L168 Benchmark]: Toolchain (without parser) took 182477.75 ms. Allocated memory was 136.8 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 100.5 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,136 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.21 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 152.5 MB in the end (delta: -52.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.30 ms. Allocated memory is still 200.3 MB. Free memory was 152.5 MB in the beginning and 149.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,138 INFO L168 Benchmark]: Boogie Preprocessor took 42.95 ms. Allocated memory is still 200.3 MB. Free memory was 149.0 MB in the beginning and 146.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,139 INFO L168 Benchmark]: RCFGBuilder took 1114.30 ms. Allocated memory is still 200.3 MB. Free memory was 146.3 MB in the beginning and 88.3 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,139 INFO L168 Benchmark]: TraceAbstraction took 180514.84 ms. Allocated memory was 200.3 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 88.3 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2019-12-18 16:43:29,144 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.21 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 152.5 MB in the end (delta: -52.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 70.30 ms. Allocated memory is still 200.3 MB. Free memory was 152.5 MB in the beginning and 149.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.95 ms. Allocated memory is still 200.3 MB. Free memory was 149.0 MB in the beginning and 146.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1114.30 ms. Allocated memory is still 200.3 MB. Free memory was 146.3 MB in the beginning and 88.3 MB in the end (delta: 58.0 MB). Peak memory consumption was 58.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 180514.84 ms. Allocated memory was 200.3 MB in the beginning and 4.6 GB in the end (delta: 4.4 GB). Free memory was 88.3 MB in the beginning and 2.3 GB in the end (delta: -2.2 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 7.4s, 211 ProgramPointsBefore, 112 ProgramPointsAfterwards, 254 TransitionsBefore, 131 TransitionsAfterwards, 26510 CoEnabledTransitionPairs, 8 FixpointIterations, 37 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 51 ConcurrentYvCompositions, 29 ChoiceCompositions, 11182 VarBasedMoverChecksPositive, 338 VarBasedMoverChecksNegative, 64 SemBasedMoverChecksPositive, 381 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 2.7s, 0 MoverChecksTotal, 142340 CheckedPairsTotal, 134 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4). Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 199 locations, 2 error locations. Result: TIMEOUT, OverallTime: 180.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 66.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 2210 SDtfs, 1382 SDslu, 2604 SDs, 0 SdLazy, 1447 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230654occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 93.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 249400 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 178 ConstructedInterpolants, 0 QuantifiedInterpolants, 20508 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown