/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 18:46:36,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 18:46:36,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 18:46:36,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 18:46:36,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 18:46:36,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 18:46:36,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 18:46:36,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 18:46:36,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 18:46:36,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 18:46:36,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 18:46:36,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 18:46:36,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 18:46:36,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 18:46:36,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 18:46:36,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 18:46:36,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 18:46:36,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 18:46:36,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 18:46:36,395 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 18:46:36,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 18:46:36,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 18:46:36,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 18:46:36,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 18:46:36,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 18:46:36,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 18:46:36,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 18:46:36,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 18:46:36,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 18:46:36,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 18:46:36,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 18:46:36,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 18:46:36,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 18:46:36,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 18:46:36,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 18:46:36,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 18:46:36,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 18:46:36,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 18:46:36,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 18:46:36,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 18:46:36,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 18:46:36,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 18:46:36,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 18:46:36,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 18:46:36,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 18:46:36,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 18:46:36,437 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 18:46:36,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 18:46:36,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 18:46:36,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 18:46:36,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 18:46:36,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 18:46:36,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 18:46:36,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 18:46:36,439 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 18:46:36,439 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 18:46:36,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 18:46:36,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 18:46:36,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 18:46:36,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 18:46:36,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 18:46:36,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 18:46:36,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 18:46:36,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:46:36,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 18:46:36,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 18:46:36,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 18:46:36,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 18:46:36,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 18:46:36,442 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 18:46:36,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 18:46:36,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 18:46:36,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 18:46:36,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 18:46:36,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 18:46:36,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 18:46:36,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 18:46:36,785 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-11 18:46:36,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6a42bbd/c6911684ba9e4be3a252be6bac25cafc/FLAG06aa531d4 [2020-10-11 18:46:37,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 18:46:37,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2020-10-11 18:46:37,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6a42bbd/c6911684ba9e4be3a252be6bac25cafc/FLAG06aa531d4 [2020-10-11 18:46:37,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6a42bbd/c6911684ba9e4be3a252be6bac25cafc [2020-10-11 18:46:37,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 18:46:37,727 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 18:46:37,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:37,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 18:46:37,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 18:46:37,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:37" (1/1) ... [2020-10-11 18:46:37,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f250a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:37, skipping insertion in model container [2020-10-11 18:46:37,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:46:37" (1/1) ... [2020-10-11 18:46:37,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 18:46:37,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 18:46:38,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:38,230 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 18:46:38,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 18:46:38,356 INFO L208 MainTranslator]: Completed translation [2020-10-11 18:46:38,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38 WrapperNode [2020-10-11 18:46:38,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 18:46:38,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:38,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 18:46:38,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 18:46:38,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 18:46:38,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 18:46:38,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 18:46:38,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 18:46:38,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... [2020-10-11 18:46:38,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 18:46:38,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 18:46:38,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 18:46:38,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 18:46:38,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 18:46:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 18:46:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-11 18:46:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 18:46:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 18:46:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-11 18:46:38,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-11 18:46:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-11 18:46:38,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-11 18:46:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-11 18:46:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 18:46:38,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 18:46:38,507 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 18:46:38,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 18:46:38,802 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-11 18:46:38,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:38 BoogieIcfgContainer [2020-10-11 18:46:38,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 18:46:38,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 18:46:38,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 18:46:38,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 18:46:38,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:46:37" (1/3) ... [2020-10-11 18:46:38,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c9b6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:38, skipping insertion in model container [2020-10-11 18:46:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:46:38" (2/3) ... [2020-10-11 18:46:38,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c9b6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:46:38, skipping insertion in model container [2020-10-11 18:46:38,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:46:38" (3/3) ... [2020-10-11 18:46:38,816 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2020-10-11 18:46:38,828 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 18:46:38,836 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 18:46:38,838 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 18:46:38,878 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,879 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,879 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,880 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,880 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,881 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,882 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,882 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,886 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,887 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,887 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,893 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,893 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 18:46:38,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 18:46:38,932 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 18:46:38,932 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 18:46:38,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 18:46:38,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 18:46:38,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 18:46:38,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 18:46:38,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 18:46:38,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 18:46:38,945 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 55 transitions, 120 flow [2020-10-11 18:46:38,980 INFO L129 PetriNetUnfolder]: 2/53 cut-off events. [2020-10-11 18:46:38,980 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:38,984 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 2/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-11 18:46:38,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 55 transitions, 120 flow [2020-10-11 18:46:38,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2020-10-11 18:46:39,006 INFO L129 PetriNetUnfolder]: 1/43 cut-off events. [2020-10-11 18:46:39,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:39,007 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:39,008 INFO L255 CegarLoopForPetriNet]: 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] [2020-10-11 18:46:39,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:39,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1637473472, now seen corresponding path program 1 times [2020-10-11 18:46:39,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:39,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166632522] [2020-10-11 18:46:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:39,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166632522] [2020-10-11 18:46:39,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:39,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:39,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548104664] [2020-10-11 18:46:39,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:39,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:39,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:39,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:39,653 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 55 [2020-10-11 18:46:39,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 94 flow. Second operand 6 states. [2020-10-11 18:46:39,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:39,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 55 [2020-10-11 18:46:39,658 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:39,839 INFO L129 PetriNetUnfolder]: 24/132 cut-off events. [2020-10-11 18:46:39,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 18:46:39,841 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 132 events. 24/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 501 event pairs, 5 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 178. Up to 31 conditions per place. [2020-10-11 18:46:39,844 INFO L132 encePairwiseOnDemand]: 47/55 looper letters, 8 selfloop transitions, 3 changer transitions 19/64 dead transitions. [2020-10-11 18:46:39,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 194 flow [2020-10-11 18:46:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 18:46:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 18:46:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 430 transitions. [2020-10-11 18:46:39,893 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8686868686868687 [2020-10-11 18:46:39,894 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 430 transitions. [2020-10-11 18:46:39,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 430 transitions. [2020-10-11 18:46:39,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:39,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 430 transitions. [2020-10-11 18:46:39,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 18:46:39,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 18:46:39,939 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 18:46:39,941 INFO L185 Difference]: Start difference. First operand has 50 places, 44 transitions, 94 flow. Second operand 9 states and 430 transitions. [2020-10-11 18:46:39,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 194 flow [2020-10-11 18:46:39,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-11 18:46:39,957 INFO L241 Difference]: Finished difference. Result has 63 places, 45 transitions, 133 flow [2020-10-11 18:46:39,960 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2020-10-11 18:46:39,961 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2020-10-11 18:46:39,962 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 133 flow [2020-10-11 18:46:39,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:39,962 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:39,963 INFO L255 CegarLoopForPetriNet]: 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] [2020-10-11 18:46:39,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 18:46:39,964 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1279569983, now seen corresponding path program 1 times [2020-10-11 18:46:39,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:39,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787706618] [2020-10-11 18:46:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:40,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787706618] [2020-10-11 18:46:40,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:40,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:40,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099603257] [2020-10-11 18:46:40,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:40,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:40,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:40,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:40,355 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:46:40,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 133 flow. Second operand 6 states. [2020-10-11 18:46:40,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:40,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:46:40,356 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:40,510 INFO L129 PetriNetUnfolder]: 44/177 cut-off events. [2020-10-11 18:46:40,511 INFO L130 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2020-10-11 18:46:40,513 INFO L80 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 177 events. 44/177 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 813 event pairs, 4 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 332. Up to 32 conditions per place. [2020-10-11 18:46:40,515 INFO L132 encePairwiseOnDemand]: 46/55 looper letters, 13 selfloop transitions, 12 changer transitions 8/68 dead transitions. [2020-10-11 18:46:40,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 245 flow [2020-10-11 18:46:40,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 18:46:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 18:46:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 465 transitions. [2020-10-11 18:46:40,519 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8454545454545455 [2020-10-11 18:46:40,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 465 transitions. [2020-10-11 18:46:40,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 465 transitions. [2020-10-11 18:46:40,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:40,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 465 transitions. [2020-10-11 18:46:40,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 18:46:40,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 18:46:40,524 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 18:46:40,524 INFO L185 Difference]: Start difference. First operand has 63 places, 45 transitions, 133 flow. Second operand 10 states and 465 transitions. [2020-10-11 18:46:40,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 245 flow [2020-10-11 18:46:40,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 236 flow, removed 3 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:40,529 INFO L241 Difference]: Finished difference. Result has 68 places, 56 transitions, 210 flow [2020-10-11 18:46:40,529 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2020-10-11 18:46:40,530 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2020-10-11 18:46:40,530 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 210 flow [2020-10-11 18:46:40,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:40,531 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:40,531 INFO L255 CegarLoopForPetriNet]: 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] [2020-10-11 18:46:40,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 18:46:40,531 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 441317954, now seen corresponding path program 1 times [2020-10-11 18:46:40,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:40,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880327087] [2020-10-11 18:46:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:40,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880327087] [2020-10-11 18:46:40,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:40,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:40,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921471260] [2020-10-11 18:46:40,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:40,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:40,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:40,754 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:46:40,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 210 flow. Second operand 7 states. [2020-10-11 18:46:40,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:40,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:46:40,755 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:40,959 INFO L129 PetriNetUnfolder]: 23/136 cut-off events. [2020-10-11 18:46:40,959 INFO L130 PetriNetUnfolder]: For 117/133 co-relation queries the response was YES. [2020-10-11 18:46:40,961 INFO L80 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 136 events. 23/136 cut-off events. For 117/133 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 592 event pairs, 0 based on Foata normal form. 12/143 useless extension candidates. Maximal degree in co-relation 334. Up to 19 conditions per place. [2020-10-11 18:46:40,962 INFO L132 encePairwiseOnDemand]: 46/55 looper letters, 11 selfloop transitions, 15 changer transitions 13/74 dead transitions. [2020-10-11 18:46:40,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 368 flow [2020-10-11 18:46:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 18:46:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-11 18:46:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 593 transitions. [2020-10-11 18:46:40,965 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8293706293706293 [2020-10-11 18:46:40,965 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 593 transitions. [2020-10-11 18:46:40,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 593 transitions. [2020-10-11 18:46:40,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:40,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 593 transitions. [2020-10-11 18:46:40,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-11 18:46:40,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-11 18:46:40,970 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-11 18:46:40,970 INFO L185 Difference]: Start difference. First operand has 68 places, 56 transitions, 210 flow. Second operand 13 states and 593 transitions. [2020-10-11 18:46:40,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 368 flow [2020-10-11 18:46:40,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 346 flow, removed 10 selfloop flow, removed 4 redundant places. [2020-10-11 18:46:40,976 INFO L241 Difference]: Finished difference. Result has 83 places, 58 transitions, 263 flow [2020-10-11 18:46:40,976 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=263, PETRI_PLACES=83, PETRI_TRANSITIONS=58} [2020-10-11 18:46:40,977 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2020-10-11 18:46:40,977 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 58 transitions, 263 flow [2020-10-11 18:46:40,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:40,977 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:40,977 INFO L255 CegarLoopForPetriNet]: 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, 1, 1, 1, 1] [2020-10-11 18:46:40,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 18:46:40,978 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash -630516880, now seen corresponding path program 1 times [2020-10-11 18:46:40,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:40,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958844974] [2020-10-11 18:46:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:41,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958844974] [2020-10-11 18:46:41,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:41,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-11 18:46:41,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112550351] [2020-10-11 18:46:41,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-11 18:46:41,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:41,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-11 18:46:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-11 18:46:41,254 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-11 18:46:41,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 58 transitions, 263 flow. Second operand 7 states. [2020-10-11 18:46:41,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:41,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-11 18:46:41,255 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:41,379 INFO L129 PetriNetUnfolder]: 11/161 cut-off events. [2020-10-11 18:46:41,380 INFO L130 PetriNetUnfolder]: For 223/228 co-relation queries the response was YES. [2020-10-11 18:46:41,380 INFO L80 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 161 events. 11/161 cut-off events. For 223/228 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 856 event pairs, 0 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 393. Up to 23 conditions per place. [2020-10-11 18:46:41,381 INFO L132 encePairwiseOnDemand]: 49/55 looper letters, 9 selfloop transitions, 1 changer transitions 19/63 dead transitions. [2020-10-11 18:46:41,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 63 transitions, 303 flow [2020-10-11 18:46:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-11 18:46:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-11 18:46:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2020-10-11 18:46:41,383 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8233766233766234 [2020-10-11 18:46:41,383 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2020-10-11 18:46:41,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2020-10-11 18:46:41,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:41,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2020-10-11 18:46:41,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-11 18:46:41,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-11 18:46:41,385 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-11 18:46:41,385 INFO L185 Difference]: Start difference. First operand has 83 places, 58 transitions, 263 flow. Second operand 7 states and 317 transitions. [2020-10-11 18:46:41,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 63 transitions, 303 flow [2020-10-11 18:46:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 63 transitions, 269 flow, removed 6 selfloop flow, removed 10 redundant places. [2020-10-11 18:46:41,393 INFO L241 Difference]: Finished difference. Result has 81 places, 44 transitions, 156 flow [2020-10-11 18:46:41,393 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2020-10-11 18:46:41,393 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2020-10-11 18:46:41,394 INFO L481 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 156 flow [2020-10-11 18:46:41,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-11 18:46:41,394 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 18:46:41,394 INFO L255 CegarLoopForPetriNet]: 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, 1, 1, 1, 1] [2020-10-11 18:46:41,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 18:46:41,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 18:46:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 18:46:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash 920923716, now seen corresponding path program 2 times [2020-10-11 18:46:41,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 18:46:41,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274308689] [2020-10-11 18:46:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 18:46:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 18:46:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 18:46:41,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274308689] [2020-10-11 18:46:41,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 18:46:41,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 18:46:41,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902006817] [2020-10-11 18:46:41,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 18:46:41,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 18:46:41,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 18:46:41,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 18:46:41,720 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 55 [2020-10-11 18:46:41,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 156 flow. Second operand 6 states. [2020-10-11 18:46:41,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 18:46:41,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 55 [2020-10-11 18:46:41,720 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 18:46:41,795 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2020-10-11 18:46:41,795 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2020-10-11 18:46:41,796 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 49 events. 1/49 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 96. Up to 4 conditions per place. [2020-10-11 18:46:41,796 INFO L132 encePairwiseOnDemand]: 50/55 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2020-10-11 18:46:41,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 42 transitions, 166 flow [2020-10-11 18:46:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 18:46:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 18:46:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2020-10-11 18:46:41,798 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2020-10-11 18:46:41,798 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 273 transitions. [2020-10-11 18:46:41,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 273 transitions. [2020-10-11 18:46:41,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 18:46:41,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 273 transitions. [2020-10-11 18:46:41,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 18:46:41,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 18:46:41,800 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 18:46:41,801 INFO L185 Difference]: Start difference. First operand has 81 places, 44 transitions, 156 flow. Second operand 6 states and 273 transitions. [2020-10-11 18:46:41,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 42 transitions, 166 flow [2020-10-11 18:46:41,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 42 transitions, 122 flow, removed 11 selfloop flow, removed 15 redundant places. [2020-10-11 18:46:41,802 INFO L241 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2020-10-11 18:46:41,803 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2020-10-11 18:46:41,803 INFO L341 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2020-10-11 18:46:41,803 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2020-10-11 18:46:41,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 18:46:41,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 18:46:41,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 06:46:41 BasicIcfg [2020-10-11 18:46:41,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 18:46:41,812 INFO L168 Benchmark]: Toolchain (without parser) took 4084.55 ms. Allocated memory was 242.7 MB in the beginning and 363.9 MB in the end (delta: 121.1 MB). Free memory was 197.5 MB in the beginning and 276.8 MB in the end (delta: -79.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:41,813 INFO L168 Benchmark]: CDTParser took 1.43 ms. Allocated memory is still 242.7 MB. Free memory is still 219.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:46:41,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 242.7 MB in the beginning and 289.9 MB in the end (delta: 47.2 MB). Free memory was 197.5 MB in the beginning and 243.3 MB in the end (delta: -45.8 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:41,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 289.9 MB. Free memory was 243.3 MB in the beginning and 240.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:41,815 INFO L168 Benchmark]: Boogie Preprocessor took 24.91 ms. Allocated memory is still 289.9 MB. Free memory is still 240.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 18:46:41,816 INFO L168 Benchmark]: RCFGBuilder took 374.93 ms. Allocated memory is still 289.9 MB. Free memory was 240.8 MB in the beginning and 218.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:41,817 INFO L168 Benchmark]: TraceAbstraction took 3002.03 ms. Allocated memory was 289.9 MB in the beginning and 363.9 MB in the end (delta: 73.9 MB). Free memory was 218.9 MB in the beginning and 276.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.2 GB. [2020-10-11 18:46:41,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43 ms. Allocated memory is still 242.7 MB. Free memory is still 219.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 626.31 ms. Allocated memory was 242.7 MB in the beginning and 289.9 MB in the end (delta: 47.2 MB). Free memory was 197.5 MB in the beginning and 243.3 MB in the end (delta: -45.8 MB). Peak memory consumption was 29.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.74 ms. Allocated memory is still 289.9 MB. Free memory was 243.3 MB in the beginning and 240.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 24.91 ms. Allocated memory is still 289.9 MB. Free memory is still 240.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 374.93 ms. Allocated memory is still 289.9 MB. Free memory was 240.8 MB in the beginning and 218.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3002.03 ms. Allocated memory was 289.9 MB in the beginning and 363.9 MB in the end (delta: 73.9 MB). Free memory was 218.9 MB in the beginning and 276.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 133 SDslu, 247 SDs, 0 SdLazy, 270 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 15511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...