/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/safe009_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:45:35,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:45:35,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:45:35,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:45:35,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:45:35,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:45:35,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:45:35,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:45:35,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:45:35,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:45:35,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:45:35,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:45:35,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:45:35,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:45:35,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:45:35,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:45:35,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:45:35,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:45:35,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:45:35,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:45:35,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:45:35,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:45:35,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:45:35,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:45:35,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:45:35,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:45:35,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:45:35,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:45:35,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:45:35,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:45:35,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:45:35,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:45:35,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:45:35,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:45:35,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:45:35,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:45:35,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:45:35,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:45:35,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:45:35,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:45:35,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:45:35,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:45:35,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:45:35,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:45:35,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:45:35,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:45:35,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:45:35,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:45:35,369 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:45:35,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:45:35,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:45:35,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:45:35,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:45:35,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:45:35,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:45:35,371 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:45:35,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:45:35,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:45:35,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:45:35,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:45:35,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:45:35,372 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:45:35,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:45:35,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:45:35,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:45:35,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:45:35,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:45:35,373 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:45:35,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:45:35,374 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:45:35,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:45:35,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:45:35,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:45:35,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:45:35,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:45:35,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:45:35,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:45:35,669 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-10-09 17:45:35,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b97ee82/4f7ca0fa20dd4191825c9caf67d604d6/FLAG0e70a3823 [2020-10-09 17:45:36,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:45:36,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.opt.i [2020-10-09 17:45:36,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b97ee82/4f7ca0fa20dd4191825c9caf67d604d6/FLAG0e70a3823 [2020-10-09 17:45:36,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78b97ee82/4f7ca0fa20dd4191825c9caf67d604d6 [2020-10-09 17:45:36,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:45:36,564 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:45:36,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:45:36,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:45:36,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:45:36,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:45:36" (1/1) ... [2020-10-09 17:45:36,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ffe112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:36, skipping insertion in model container [2020-10-09 17:45:36,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:45:36" (1/1) ... [2020-10-09 17:45:36,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:45:36,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:45:37,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:45:37,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:45:37,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:45:37,265 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:45:37,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37 WrapperNode [2020-10-09 17:45:37,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:45:37,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:45:37,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:45:37,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:45:37,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:45:37,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:45:37,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:45:37,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:45:37,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (1/1) ... [2020-10-09 17:45:37,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:45:37,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:45:37,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:45:37,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:45:37,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (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 [2020-10-09 17:45:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:45:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:45:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:45:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:45:37,402 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:45:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:45:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:45:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:45:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:45:37,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:45:37,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:45:37,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:45:37,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:45:37,406 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:45:37,711 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:45:37,711 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:45:37,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:45:37 BoogieIcfgContainer [2020-10-09 17:45:37,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:45:37,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:45:37,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:45:37,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:45:37,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:45:36" (1/3) ... [2020-10-09 17:45:37,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2bfa04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:45:37, skipping insertion in model container [2020-10-09 17:45:37,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:45:37" (2/3) ... [2020-10-09 17:45:37,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d2bfa04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:45:37, skipping insertion in model container [2020-10-09 17:45:37,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:45:37" (3/3) ... [2020-10-09 17:45:37,721 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.opt.i [2020-10-09 17:45:37,732 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:45:37,740 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:45:37,741 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:45:37,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,768 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,768 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,772 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,772 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,773 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,773 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,773 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,774 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,774 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,774 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,775 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,775 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,779 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,780 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,789 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,789 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,790 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,790 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,792 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,793 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,793 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:45:37,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:45:37,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:45:37,831 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:45:37,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:45:37,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:45:37,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:45:37,832 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:45:37,832 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:45:37,832 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:45:37,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-09 17:45:37,882 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-09 17:45:37,882 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:37,887 INFO L80 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-10-09 17:45:37,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-09 17:45:37,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-09 17:45:37,912 INFO L129 PetriNetUnfolder]: 1/53 cut-off events. [2020-10-09 17:45:37,912 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:37,912 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:37,913 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] [2020-10-09 17:45:37,914 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash 224354021, now seen corresponding path program 1 times [2020-10-09 17:45:37,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:37,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315037804] [2020-10-09 17:45:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:38,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:45:38,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:38,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:38,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:38,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315037804] [2020-10-09 17:45:38,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:38,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:38,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869661124] [2020-10-09 17:45:38,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:38,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:38,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:38,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:38,664 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 68 [2020-10-09 17:45:38,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 117 flow. Second operand 8 states. [2020-10-09 17:45:38,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:38,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 68 [2020-10-09 17:45:38,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:38,844 INFO L129 PetriNetUnfolder]: 18/137 cut-off events. [2020-10-09 17:45:38,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:45:38,846 INFO L80 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 137 events. 18/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 490 event pairs, 0 based on Foata normal form. 8/142 useless extension candidates. Maximal degree in co-relation 183. Up to 15 conditions per place. [2020-10-09 17:45:38,848 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 10 selfloop transitions, 5 changer transitions 24/82 dead transitions. [2020-10-09 17:45:38,849 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 249 flow [2020-10-09 17:45:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:45:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:45:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 785 transitions. [2020-10-09 17:45:38,870 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8880090497737556 [2020-10-09 17:45:38,871 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 785 transitions. [2020-10-09 17:45:38,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 785 transitions. [2020-10-09 17:45:38,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 785 transitions. [2020-10-09 17:45:38,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:45:38,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:45:38,892 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:45:38,895 INFO L185 Difference]: Start difference. First operand has 63 places, 54 transitions, 117 flow. Second operand 13 states and 785 transitions. [2020-10-09 17:45:38,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 249 flow [2020-10-09 17:45:38,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:45:38,906 INFO L241 Difference]: Finished difference. Result has 83 places, 54 transitions, 152 flow [2020-10-09 17:45:38,909 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=152, PETRI_PLACES=83, PETRI_TRANSITIONS=54} [2020-10-09 17:45:38,910 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2020-10-09 17:45:38,910 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 54 transitions, 152 flow [2020-10-09 17:45:38,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:38,911 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:38,911 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] [2020-10-09 17:45:39,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:45:39,133 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:39,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1136574554, now seen corresponding path program 1 times [2020-10-09 17:45:39,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:39,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498447835] [2020-10-09 17:45:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:39,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:45:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:39,219 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:39,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:39,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498447835] [2020-10-09 17:45:39,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:39,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:39,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446322412] [2020-10-09 17:45:39,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:39,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:39,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:39,475 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 68 [2020-10-09 17:45:39,476 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 54 transitions, 152 flow. Second operand 8 states. [2020-10-09 17:45:39,476 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:39,476 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 68 [2020-10-09 17:45:39,477 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:39,574 INFO L129 PetriNetUnfolder]: 6/120 cut-off events. [2020-10-09 17:45:39,574 INFO L130 PetriNetUnfolder]: For 87/91 co-relation queries the response was YES. [2020-10-09 17:45:39,575 INFO L80 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 120 events. 6/120 cut-off events. For 87/91 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 401 event pairs, 0 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 209. Up to 12 conditions per place. [2020-10-09 17:45:39,576 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-09 17:45:39,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 236 flow [2020-10-09 17:45:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:45:39,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:45:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2020-10-09 17:45:39,579 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8856209150326797 [2020-10-09 17:45:39,579 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2020-10-09 17:45:39,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2020-10-09 17:45:39,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:39,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2020-10-09 17:45:39,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:45:39,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:45:39,583 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:45:39,583 INFO L185 Difference]: Start difference. First operand has 83 places, 54 transitions, 152 flow. Second operand 9 states and 542 transitions. [2020-10-09 17:45:39,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 236 flow [2020-10-09 17:45:39,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 194 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:45:39,588 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 154 flow [2020-10-09 17:45:39,588 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=154, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-09 17:45:39,589 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2020-10-09 17:45:39,589 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 154 flow [2020-10-09 17:45:39,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:39,590 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:39,590 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, 1] [2020-10-09 17:45:39,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:45:39,812 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:39,812 INFO L82 PathProgramCache]: Analyzing trace with hash -616510169, now seen corresponding path program 1 times [2020-10-09 17:45:39,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:39,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930179770] [2020-10-09 17:45:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:39,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:45:39,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:39,890 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:39,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:39,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930179770] [2020-10-09 17:45:39,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:39,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:39,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702517686] [2020-10-09 17:45:39,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:39,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:39,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:39,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:40,134 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 68 [2020-10-09 17:45:40,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 154 flow. Second operand 8 states. [2020-10-09 17:45:40,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:40,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 68 [2020-10-09 17:45:40,135 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:40,224 INFO L129 PetriNetUnfolder]: 3/93 cut-off events. [2020-10-09 17:45:40,224 INFO L130 PetriNetUnfolder]: For 44/48 co-relation queries the response was YES. [2020-10-09 17:45:40,226 INFO L80 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 93 events. 3/93 cut-off events. For 44/48 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 234 event pairs, 0 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 157. Up to 12 conditions per place. [2020-10-09 17:45:40,227 INFO L132 encePairwiseOnDemand]: 62/68 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-09 17:45:40,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 64 transitions, 232 flow [2020-10-09 17:45:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:45:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:45:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2020-10-09 17:45:40,230 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8856209150326797 [2020-10-09 17:45:40,231 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2020-10-09 17:45:40,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2020-10-09 17:45:40,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:40,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2020-10-09 17:45:40,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:45:40,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:45:40,234 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:45:40,235 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 154 flow. Second operand 9 states and 542 transitions. [2020-10-09 17:45:40,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 64 transitions, 232 flow [2020-10-09 17:45:40,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 200 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:45:40,243 INFO L241 Difference]: Finished difference. Result has 80 places, 54 transitions, 158 flow [2020-10-09 17:45:40,244 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=158, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2020-10-09 17:45:40,244 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2020-10-09 17:45:40,244 INFO L481 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 158 flow [2020-10-09 17:45:40,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:40,244 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:40,245 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, 1, 1, 1] [2020-10-09 17:45:40,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:45:40,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash -354379224, now seen corresponding path program 1 times [2020-10-09 17:45:40,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:40,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613390085] [2020-10-09 17:45:40,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:45:40,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:40,538 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:40,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:40,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613390085] [2020-10-09 17:45:40,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:40,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:45:40,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683783200] [2020-10-09 17:45:40,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:45:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:45:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:45:40,793 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 68 [2020-10-09 17:45:40,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 158 flow. Second operand 9 states. [2020-10-09 17:45:40,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:40,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 68 [2020-10-09 17:45:40,794 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:40,902 INFO L129 PetriNetUnfolder]: 8/119 cut-off events. [2020-10-09 17:45:40,902 INFO L130 PetriNetUnfolder]: For 103/128 co-relation queries the response was YES. [2020-10-09 17:45:40,903 INFO L80 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 119 events. 8/119 cut-off events. For 103/128 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 418 event pairs, 0 based on Foata normal form. 4/120 useless extension candidates. Maximal degree in co-relation 230. Up to 12 conditions per place. [2020-10-09 17:45:40,903 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 6 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-09 17:45:40,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 66 transitions, 261 flow [2020-10-09 17:45:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:45:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:45:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2020-10-09 17:45:40,906 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2020-10-09 17:45:40,906 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2020-10-09 17:45:40,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2020-10-09 17:45:40,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:40,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2020-10-09 17:45:40,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:45:40,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:45:40,911 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:45:40,911 INFO L185 Difference]: Start difference. First operand has 80 places, 54 transitions, 158 flow. Second operand 10 states and 584 transitions. [2020-10-09 17:45:40,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 66 transitions, 261 flow [2020-10-09 17:45:40,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 227 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:45:40,915 INFO L241 Difference]: Finished difference. Result has 83 places, 54 transitions, 172 flow [2020-10-09 17:45:40,915 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=83, PETRI_TRANSITIONS=54} [2020-10-09 17:45:40,915 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2020-10-09 17:45:40,915 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 54 transitions, 172 flow [2020-10-09 17:45:40,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:45:40,916 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:40,916 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, 1, 1, 1, 1] [2020-10-09 17:45:41,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:45:41,128 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:41,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1645847658, now seen corresponding path program 1 times [2020-10-09 17:45:41,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:41,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008728765] [2020-10-09 17:45:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:41,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 17:45:41,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:41,196 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:41,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:41,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008728765] [2020-10-09 17:45:41,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:41,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:45:41,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762168632] [2020-10-09 17:45:41,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:45:41,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:41,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:45:41,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:45:41,363 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-09 17:45:41,364 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 54 transitions, 172 flow. Second operand 8 states. [2020-10-09 17:45:41,364 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:41,364 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-09 17:45:41,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:41,588 INFO L129 PetriNetUnfolder]: 124/343 cut-off events. [2020-10-09 17:45:41,588 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2020-10-09 17:45:41,591 INFO L80 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 343 events. 124/343 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1830 event pairs, 0 based on Foata normal form. 14/342 useless extension candidates. Maximal degree in co-relation 643. Up to 72 conditions per place. [2020-10-09 17:45:41,592 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 10 selfloop transitions, 9 changer transitions 29/92 dead transitions. [2020-10-09 17:45:41,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 344 flow [2020-10-09 17:45:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-09 17:45:41,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-09 17:45:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 711 transitions. [2020-10-09 17:45:41,597 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8713235294117647 [2020-10-09 17:45:41,597 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 711 transitions. [2020-10-09 17:45:41,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 711 transitions. [2020-10-09 17:45:41,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:41,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 711 transitions. [2020-10-09 17:45:41,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 13 states. [2020-10-09 17:45:41,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 13 states. [2020-10-09 17:45:41,604 INFO L81 ComplementDD]: Finished complementDD. Result 13 states. [2020-10-09 17:45:41,604 INFO L185 Difference]: Start difference. First operand has 83 places, 54 transitions, 172 flow. Second operand 12 states and 711 transitions. [2020-10-09 17:45:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 344 flow [2020-10-09 17:45:41,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 309 flow, removed 10 selfloop flow, removed 12 redundant places. [2020-10-09 17:45:41,609 INFO L241 Difference]: Finished difference. Result has 85 places, 60 transitions, 235 flow [2020-10-09 17:45:41,609 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2020-10-09 17:45:41,609 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2020-10-09 17:45:41,609 INFO L481 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 235 flow [2020-10-09 17:45:41,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:45:41,610 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:41,610 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, 1, 1, 1, 1, 1, 1] [2020-10-09 17:45:41,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:45:41,823 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:41,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1194075787, now seen corresponding path program 1 times [2020-10-09 17:45:41,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:41,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424269066] [2020-10-09 17:45:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:41,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 17:45:41,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:41,897 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:41,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:41,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424269066] [2020-10-09 17:45:41,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:41,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-09 17:45:41,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307672971] [2020-10-09 17:45:41,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:45:41,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:45:41,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:45:42,098 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-09 17:45:42,099 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 235 flow. Second operand 10 states. [2020-10-09 17:45:42,099 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:42,099 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-09 17:45:42,099 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:42,250 INFO L129 PetriNetUnfolder]: 32/157 cut-off events. [2020-10-09 17:45:42,251 INFO L130 PetriNetUnfolder]: For 616/666 co-relation queries the response was YES. [2020-10-09 17:45:42,254 INFO L80 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 157 events. 32/157 cut-off events. For 616/666 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 589 event pairs, 0 based on Foata normal form. 28/183 useless extension candidates. Maximal degree in co-relation 543. Up to 53 conditions per place. [2020-10-09 17:45:42,255 INFO L132 encePairwiseOnDemand]: 59/68 looper letters, 4 selfloop transitions, 12 changer transitions 15/73 dead transitions. [2020-10-09 17:45:42,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 418 flow [2020-10-09 17:45:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-09 17:45:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-09 17:45:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 636 transitions. [2020-10-09 17:45:42,259 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8502673796791443 [2020-10-09 17:45:42,260 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 636 transitions. [2020-10-09 17:45:42,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 636 transitions. [2020-10-09 17:45:42,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:42,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 636 transitions. [2020-10-09 17:45:42,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-09 17:45:42,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-09 17:45:42,264 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-09 17:45:42,264 INFO L185 Difference]: Start difference. First operand has 85 places, 60 transitions, 235 flow. Second operand 11 states and 636 transitions. [2020-10-09 17:45:42,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 418 flow [2020-10-09 17:45:42,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 328 flow, removed 39 selfloop flow, removed 8 redundant places. [2020-10-09 17:45:42,269 INFO L241 Difference]: Finished difference. Result has 87 places, 58 transitions, 232 flow [2020-10-09 17:45:42,270 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=232, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2020-10-09 17:45:42,270 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 24 predicate places. [2020-10-09 17:45:42,270 INFO L481 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 232 flow [2020-10-09 17:45:42,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:45:42,273 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:45:42,273 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:45:42,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:45:42,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:45:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:45:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -938963744, now seen corresponding path program 1 times [2020-10-09 17:45:42,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:45:42,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154763512] [2020-10-09 17:45:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:45:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:45:42,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:45:42,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:45:42,577 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:45:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:42,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:45:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:45:42,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154763512] [2020-10-09 17:45:42,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:45:42,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:45:42,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894899679] [2020-10-09 17:45:42,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:45:42,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:45:42,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:45:42,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:45:42,794 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2020-10-09 17:45:42,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 232 flow. Second operand 10 states. [2020-10-09 17:45:42,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:45:42,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2020-10-09 17:45:42,796 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:45:42,864 INFO L129 PetriNetUnfolder]: 5/67 cut-off events. [2020-10-09 17:45:42,864 INFO L130 PetriNetUnfolder]: For 62/67 co-relation queries the response was YES. [2020-10-09 17:45:42,865 INFO L80 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 67 events. 5/67 cut-off events. For 62/67 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 134. Up to 11 conditions per place. [2020-10-09 17:45:42,865 INFO L132 encePairwiseOnDemand]: 60/68 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2020-10-09 17:45:42,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 56 transitions, 248 flow [2020-10-09 17:45:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 17:45:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-09 17:45:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 451 transitions. [2020-10-09 17:45:42,867 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8290441176470589 [2020-10-09 17:45:42,868 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 451 transitions. [2020-10-09 17:45:42,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 451 transitions. [2020-10-09 17:45:42,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:45:42,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 451 transitions. [2020-10-09 17:45:42,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-09 17:45:42,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-09 17:45:42,871 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-09 17:45:42,872 INFO L185 Difference]: Start difference. First operand has 87 places, 58 transitions, 232 flow. Second operand 8 states and 451 transitions. [2020-10-09 17:45:42,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 56 transitions, 248 flow [2020-10-09 17:45:42,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 56 transitions, 164 flow, removed 20 selfloop flow, removed 18 redundant places. [2020-10-09 17:45:42,874 INFO L241 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2020-10-09 17:45:42,874 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2020-10-09 17:45:42,875 INFO L341 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2020-10-09 17:45:42,875 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2020-10-09 17:45:42,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:45:43,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:45:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:45:43 BasicIcfg [2020-10-09 17:45:43,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:45:43,098 INFO L168 Benchmark]: Toolchain (without parser) took 6533.71 ms. Allocated memory was 252.2 MB in the beginning and 419.4 MB in the end (delta: 167.2 MB). Free memory was 206.7 MB in the beginning and 199.2 MB in the end (delta: 7.4 MB). Peak memory consumption was 174.7 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,099 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:45:43,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.02 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 206.7 MB in the beginning and 268.6 MB in the end (delta: -61.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 317.7 MB. Free memory was 268.6 MB in the beginning and 266.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,101 INFO L168 Benchmark]: Boogie Preprocessor took 27.02 ms. Allocated memory is still 317.7 MB. Free memory was 266.1 MB in the beginning and 263.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,102 INFO L168 Benchmark]: RCFGBuilder took 373.32 ms. Allocated memory is still 317.7 MB. Free memory was 263.6 MB in the beginning and 241.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,103 INFO L168 Benchmark]: TraceAbstraction took 5381.49 ms. Allocated memory was 317.7 MB in the beginning and 419.4 MB in the end (delta: 101.7 MB). Free memory was 241.8 MB in the beginning and 199.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 144.2 MB. Max. memory is 14.2 GB. [2020-10-09 17:45:43,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 699.02 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 206.7 MB in the beginning and 268.6 MB in the end (delta: -61.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.80 ms. Allocated memory is still 317.7 MB. Free memory was 268.6 MB in the beginning and 266.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.02 ms. Allocated memory is still 317.7 MB. Free memory was 266.1 MB in the beginning and 263.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 373.32 ms. Allocated memory is still 317.7 MB. Free memory was 263.6 MB in the beginning and 241.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5381.49 ms. Allocated memory was 317.7 MB in the beginning and 419.4 MB in the end (delta: 101.7 MB). Free memory was 241.8 MB in the beginning and 199.2 MB in the end (delta: 42.5 MB). Peak memory consumption was 144.2 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 4 procedures, 67 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: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 273 SDslu, 450 SDs, 0 SdLazy, 457 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 494 SyntacticMatches, 13 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=5, 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, 0.7s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 554 ConstructedInterpolants, 0 QuantifiedInterpolants, 62566 SizeOfPredicates, 48 NumberOfNonLiveVariables, 738 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...