/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/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:41:46,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:41:46,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:41:46,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:41:46,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:41:46,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:41:46,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:41:46,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:41:46,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:41:46,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:41:46,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:41:46,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:41:46,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:41:46,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:41:46,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:41:46,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:41:46,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:41:46,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:41:46,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:41:46,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:41:46,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:41:46,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:41:46,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:41:46,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:41:46,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:41:46,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:41:46,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:41:46,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:41:46,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:41:46,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:41:46,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:41:46,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:41:46,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:41:46,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:41:46,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:41:46,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:41:46,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 01:41:46,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:41:46,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:41:46,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:41:46,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:41:46,262 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:41:46,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:41:46,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:41:46,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:41:46,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:41:46,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:41:46,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:41:46,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:41:46,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:41:46,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:41:46,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:41:46,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:41:46,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:41:46,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:41:46,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:41:46,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:41:46,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:41:46,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:41:46,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:41:46,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:41:46,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:41:46,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:41:46,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:41:46,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:41:46,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:41:46,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:41:46,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:41:46,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:41:46,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:41:46,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:41:46,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-16 01:41:46,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78993ae7c/e07b3dd98fe1440fb5831fd1ca90bc30/FLAGd235fe2fb [2020-10-16 01:41:47,181 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:41:47,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc.i [2020-10-16 01:41:47,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78993ae7c/e07b3dd98fe1440fb5831fd1ca90bc30/FLAGd235fe2fb [2020-10-16 01:41:47,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78993ae7c/e07b3dd98fe1440fb5831fd1ca90bc30 [2020-10-16 01:41:47,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:41:47,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:41:47,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:47,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:41:47,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:41:47,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:47" (1/1) ... [2020-10-16 01:41:47,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34491526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:47, skipping insertion in model container [2020-10-16 01:41:47,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:41:47" (1/1) ... [2020-10-16 01:41:47,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:41:47,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:41:48,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:48,125 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:41:48,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:41:48,269 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:41:48,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48 WrapperNode [2020-10-16 01:41:48,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:41:48,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:48,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:41:48,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:41:48,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:41:48,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:41:48,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:41:48,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:41:48,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (1/1) ... [2020-10-16 01:41:48,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:41:48,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:41:48,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:41:48,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:41:48,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (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 [2020-10-16 01:41:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:41:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:41:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:41:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:41:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:41:48,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:41:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:41:48,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:41:48,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:41:48,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:41:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:41:48,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:41:48,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:41:48,426 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 01:41:48,757 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:41:48,757 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:41:48,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:48 BoogieIcfgContainer [2020-10-16 01:41:48,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:41:48,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:41:48,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:41:48,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:41:48,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:41:47" (1/3) ... [2020-10-16 01:41:48,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32abff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:48, skipping insertion in model container [2020-10-16 01:41:48,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:41:48" (2/3) ... [2020-10-16 01:41:48,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32abff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:41:48, skipping insertion in model container [2020-10-16 01:41:48,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:41:48" (3/3) ... [2020-10-16 01:41:48,769 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc.i [2020-10-16 01:41:48,780 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:41:48,787 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:41:48,788 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:41:48,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,826 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,826 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,827 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,827 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,848 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:41:48,868 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:41:48,900 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:41:48,901 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:41:48,901 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:41:48,901 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:41:48,901 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:41:48,901 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:41:48,902 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:41:48,903 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:41:48,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:41:48,964 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2020-10-16 01:41:48,965 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:48,974 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 45 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. [2020-10-16 01:41:48,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 68 transitions, 151 flow [2020-10-16 01:41:48,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 54 transitions, 117 flow [2020-10-16 01:41:48,993 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:41:48,996 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:41:48,999 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 54 transitions, 117 flow [2020-10-16 01:41:49,000 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions, 117 flow [2020-10-16 01:41:49,018 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2020-10-16 01:41:49,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:49,019 INFO L80 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-16 01:41:49,021 INFO L117 LiptonReduction]: Number of co-enabled transitions 804 [2020-10-16 01:41:50,401 INFO L132 LiptonReduction]: Checked pairs total: 1499 [2020-10-16 01:41:50,402 INFO L134 LiptonReduction]: Total number of compositions: 41 [2020-10-16 01:41:50,404 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1414 [2020-10-16 01:41:50,412 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:41:50,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:50,413 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:50,414 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:50,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:50,420 INFO L82 PathProgramCache]: Analyzing trace with hash 610460001, now seen corresponding path program 1 times [2020-10-16 01:41:50,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:50,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392287413] [2020-10-16 01:41:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:50,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392287413] [2020-10-16 01:41:50,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:50,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:50,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738972695] [2020-10-16 01:41:50,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:50,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:50,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:50,675 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 109 [2020-10-16 01:41:50,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states. [2020-10-16 01:41:50,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:50,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 109 [2020-10-16 01:41:50,679 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:50,702 INFO L129 PetriNetUnfolder]: 3/23 cut-off events. [2020-10-16 01:41:50,703 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:41:50,703 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 23 events. 3/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 34. Up to 10 conditions per place. [2020-10-16 01:41:50,705 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 3 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2020-10-16 01:41:50,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 57 flow [2020-10-16 01:41:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:50,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2020-10-16 01:41:50,721 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8379204892966361 [2020-10-16 01:41:50,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2020-10-16 01:41:50,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2020-10-16 01:41:50,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:50,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2020-10-16 01:41:50,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:50,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:50,739 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:50,741 INFO L185 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 274 transitions. [2020-10-16 01:41:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 57 flow [2020-10-16 01:41:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 18 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:41:50,748 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2020-10-16 01:41:50,751 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 01:41:50,752 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2020-10-16 01:41:50,752 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2020-10-16 01:41:50,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:50,753 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:50,753 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:50,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:41:50,754 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:50,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1744390338, now seen corresponding path program 1 times [2020-10-16 01:41:50,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:50,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923081889] [2020-10-16 01:41:50,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:50,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923081889] [2020-10-16 01:41:50,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:50,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:41:50,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046752599] [2020-10-16 01:41:50,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:50,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:50,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:50,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:50,839 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 109 [2020-10-16 01:41:50,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states. [2020-10-16 01:41:50,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:50,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 109 [2020-10-16 01:41:50,842 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:50,863 INFO L129 PetriNetUnfolder]: 3/23 cut-off events. [2020-10-16 01:41:50,863 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 01:41:50,864 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 23 events. 3/23 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2020-10-16 01:41:50,864 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 1 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2020-10-16 01:41:50,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 63 flow [2020-10-16 01:41:50,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2020-10-16 01:41:50,872 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8287461773700305 [2020-10-16 01:41:50,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2020-10-16 01:41:50,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2020-10-16 01:41:50,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:50,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2020-10-16 01:41:50,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:50,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:50,879 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:50,879 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 271 transitions. [2020-10-16 01:41:50,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 63 flow [2020-10-16 01:41:50,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:50,883 INFO L241 Difference]: Finished difference. Result has 28 places, 18 transitions, 62 flow [2020-10-16 01:41:50,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2020-10-16 01:41:50,884 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2020-10-16 01:41:50,885 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 62 flow [2020-10-16 01:41:50,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:50,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:50,885 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:50,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:41:50,886 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1759177370, now seen corresponding path program 1 times [2020-10-16 01:41:50,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:50,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371438039] [2020-10-16 01:41:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371438039] [2020-10-16 01:41:51,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:51,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45374529] [2020-10-16 01:41:51,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:51,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:51,011 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 109 [2020-10-16 01:41:51,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 62 flow. Second operand 4 states. [2020-10-16 01:41:51,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 109 [2020-10-16 01:41:51,012 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,072 INFO L129 PetriNetUnfolder]: 11/49 cut-off events. [2020-10-16 01:41:51,072 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2020-10-16 01:41:51,073 INFO L80 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 49 events. 11/49 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 157 event pairs, 3 based on Foata normal form. 8/56 useless extension candidates. Maximal degree in co-relation 100. Up to 17 conditions per place. [2020-10-16 01:41:51,073 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 4 selfloop transitions, 3 changer transitions 1/21 dead transitions. [2020-10-16 01:41:51,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 87 flow [2020-10-16 01:41:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:51,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:51,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2020-10-16 01:41:51,092 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7844036697247706 [2020-10-16 01:41:51,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2020-10-16 01:41:51,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2020-10-16 01:41:51,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2020-10-16 01:41:51,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:51,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:51,096 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:51,096 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 62 flow. Second operand 4 states and 342 transitions. [2020-10-16 01:41:51,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 87 flow [2020-10-16 01:41:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 21 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:51,098 INFO L241 Difference]: Finished difference. Result has 31 places, 18 transitions, 72 flow [2020-10-16 01:41:51,098 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2020-10-16 01:41:51,098 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2020-10-16 01:41:51,099 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 72 flow [2020-10-16 01:41:51,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:51,099 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:51,099 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:51,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:41:51,099 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash 866166835, now seen corresponding path program 1 times [2020-10-16 01:41:51,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:51,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232773375] [2020-10-16 01:41:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232773375] [2020-10-16 01:41:51,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:51,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595952121] [2020-10-16 01:41:51,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:51,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:51,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:51,188 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 109 [2020-10-16 01:41:51,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 72 flow. Second operand 4 states. [2020-10-16 01:41:51,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,189 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 109 [2020-10-16 01:41:51,189 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,243 INFO L129 PetriNetUnfolder]: 43/96 cut-off events. [2020-10-16 01:41:51,243 INFO L130 PetriNetUnfolder]: For 258/291 co-relation queries the response was YES. [2020-10-16 01:41:51,244 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 96 events. 43/96 cut-off events. For 258/291 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 348 event pairs, 18 based on Foata normal form. 17/104 useless extension candidates. Maximal degree in co-relation 242. Up to 62 conditions per place. [2020-10-16 01:41:51,245 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 7 selfloop transitions, 7 changer transitions 2/28 dead transitions. [2020-10-16 01:41:51,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 124 flow [2020-10-16 01:41:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:41:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:41:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 428 transitions. [2020-10-16 01:41:51,248 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7853211009174312 [2020-10-16 01:41:51,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 428 transitions. [2020-10-16 01:41:51,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 428 transitions. [2020-10-16 01:41:51,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 428 transitions. [2020-10-16 01:41:51,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:41:51,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:41:51,251 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:41:51,252 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 72 flow. Second operand 5 states and 428 transitions. [2020-10-16 01:41:51,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 124 flow [2020-10-16 01:41:51,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 112 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:51,258 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 114 flow [2020-10-16 01:41:51,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2020-10-16 01:41:51,260 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2020-10-16 01:41:51,260 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 114 flow [2020-10-16 01:41:51,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:51,261 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:51,261 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:51,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:41:51,261 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:51,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:51,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1081844256, now seen corresponding path program 1 times [2020-10-16 01:41:51,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:51,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450879297] [2020-10-16 01:41:51,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450879297] [2020-10-16 01:41:51,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:51,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877646296] [2020-10-16 01:41:51,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:41:51,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:41:51,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:41:51,371 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 109 [2020-10-16 01:41:51,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 114 flow. Second operand 5 states. [2020-10-16 01:41:51,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 109 [2020-10-16 01:41:51,372 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,467 INFO L129 PetriNetUnfolder]: 25/75 cut-off events. [2020-10-16 01:41:51,469 INFO L130 PetriNetUnfolder]: For 238/365 co-relation queries the response was YES. [2020-10-16 01:41:51,470 INFO L80 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 75 events. 25/75 cut-off events. For 238/365 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 270 event pairs, 3 based on Foata normal form. 41/112 useless extension candidates. Maximal degree in co-relation 268. Up to 52 conditions per place. [2020-10-16 01:41:51,471 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 5 selfloop transitions, 13 changer transitions 4/34 dead transitions. [2020-10-16 01:41:51,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 216 flow [2020-10-16 01:41:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2020-10-16 01:41:51,477 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.783748361730013 [2020-10-16 01:41:51,478 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2020-10-16 01:41:51,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2020-10-16 01:41:51,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2020-10-16 01:41:51,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:51,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:51,483 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:51,483 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 114 flow. Second operand 7 states and 598 transitions. [2020-10-16 01:41:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 216 flow [2020-10-16 01:41:51,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:41:51,490 INFO L241 Difference]: Finished difference. Result has 42 places, 30 transitions, 198 flow [2020-10-16 01:41:51,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2020-10-16 01:41:51,491 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2020-10-16 01:41:51,492 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 198 flow [2020-10-16 01:41:51,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:41:51,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:51,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:51,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:41:51,492 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:51,493 INFO L82 PathProgramCache]: Analyzing trace with hash -86970807, now seen corresponding path program 1 times [2020-10-16 01:41:51,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:51,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842514642] [2020-10-16 01:41:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842514642] [2020-10-16 01:41:51,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:41:51,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368661105] [2020-10-16 01:41:51,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:41:51,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:41:51,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:41:51,562 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 109 [2020-10-16 01:41:51,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 198 flow. Second operand 3 states. [2020-10-16 01:41:51,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 109 [2020-10-16 01:41:51,565 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,593 INFO L129 PetriNetUnfolder]: 23/86 cut-off events. [2020-10-16 01:41:51,594 INFO L130 PetriNetUnfolder]: For 471/569 co-relation queries the response was YES. [2020-10-16 01:41:51,594 INFO L80 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 86 events. 23/86 cut-off events. For 471/569 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 370 event pairs, 3 based on Foata normal form. 11/93 useless extension candidates. Maximal degree in co-relation 353. Up to 64 conditions per place. [2020-10-16 01:41:51,595 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 3 selfloop transitions, 3 changer transitions 6/30 dead transitions. [2020-10-16 01:41:51,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 210 flow [2020-10-16 01:41:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:41:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:41:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2020-10-16 01:41:51,597 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8348623853211009 [2020-10-16 01:41:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2020-10-16 01:41:51,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2020-10-16 01:41:51,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2020-10-16 01:41:51,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:41:51,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:41:51,599 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:41:51,600 INFO L185 Difference]: Start difference. First operand has 42 places, 30 transitions, 198 flow. Second operand 3 states and 273 transitions. [2020-10-16 01:41:51,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 210 flow [2020-10-16 01:41:51,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 180 flow, removed 11 selfloop flow, removed 2 redundant places. [2020-10-16 01:41:51,603 INFO L241 Difference]: Finished difference. Result has 43 places, 24 transitions, 139 flow [2020-10-16 01:41:51,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2020-10-16 01:41:51,604 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2020-10-16 01:41:51,604 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 139 flow [2020-10-16 01:41:51,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:41:51,604 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:51,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:51,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:41:51,605 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:51,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1999671234, now seen corresponding path program 1 times [2020-10-16 01:41:51,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:51,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653396841] [2020-10-16 01:41:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653396841] [2020-10-16 01:41:51,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:41:51,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56297569] [2020-10-16 01:41:51,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:41:51,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:41:51,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:41:51,637 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 109 [2020-10-16 01:41:51,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 139 flow. Second operand 4 states. [2020-10-16 01:41:51,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 109 [2020-10-16 01:41:51,637 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,676 INFO L129 PetriNetUnfolder]: 26/86 cut-off events. [2020-10-16 01:41:51,676 INFO L130 PetriNetUnfolder]: For 319/333 co-relation queries the response was YES. [2020-10-16 01:41:51,677 INFO L80 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 86 events. 26/86 cut-off events. For 319/333 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 320 event pairs, 3 based on Foata normal form. 10/94 useless extension candidates. Maximal degree in co-relation 282. Up to 43 conditions per place. [2020-10-16 01:41:51,678 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 4 selfloop transitions, 2 changer transitions 2/26 dead transitions. [2020-10-16 01:41:51,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 159 flow [2020-10-16 01:41:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:41:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:41:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2020-10-16 01:41:51,680 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7889908256880734 [2020-10-16 01:41:51,680 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2020-10-16 01:41:51,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2020-10-16 01:41:51,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2020-10-16 01:41:51,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:41:51,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:41:51,682 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:41:51,683 INFO L185 Difference]: Start difference. First operand has 43 places, 24 transitions, 139 flow. Second operand 4 states and 344 transitions. [2020-10-16 01:41:51,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 159 flow [2020-10-16 01:41:51,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 140 flow, removed 8 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:51,685 INFO L241 Difference]: Finished difference. Result has 40 places, 24 transitions, 127 flow [2020-10-16 01:41:51,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2020-10-16 01:41:51,686 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2020-10-16 01:41:51,686 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 127 flow [2020-10-16 01:41:51,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:41:51,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:41:51,687 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:41:51,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:41:51,687 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:41:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:41:51,688 INFO L82 PathProgramCache]: Analyzing trace with hash -875287526, now seen corresponding path program 2 times [2020-10-16 01:41:51,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:41:51,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667689095] [2020-10-16 01:41:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:41:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:41:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 01:41:51,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667689095] [2020-10-16 01:41:51,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:41:51,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:41:51,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789211351] [2020-10-16 01:41:51,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:41:51,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:41:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:41:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:41:51,761 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 109 [2020-10-16 01:41:51,762 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 127 flow. Second operand 6 states. [2020-10-16 01:41:51,762 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:41:51,762 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 109 [2020-10-16 01:41:51,762 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:41:51,839 INFO L129 PetriNetUnfolder]: 15/68 cut-off events. [2020-10-16 01:41:51,839 INFO L130 PetriNetUnfolder]: For 91/150 co-relation queries the response was YES. [2020-10-16 01:41:51,840 INFO L80 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 68 events. 15/68 cut-off events. For 91/150 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 262 event pairs, 0 based on Foata normal form. 30/95 useless extension candidates. Maximal degree in co-relation 246. Up to 37 conditions per place. [2020-10-16 01:41:51,840 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2020-10-16 01:41:51,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 159 flow [2020-10-16 01:41:51,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:41:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:41:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2020-10-16 01:41:51,845 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7706422018348624 [2020-10-16 01:41:51,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2020-10-16 01:41:51,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2020-10-16 01:41:51,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:41:51,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2020-10-16 01:41:51,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:41:51,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:41:51,850 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:41:51,851 INFO L185 Difference]: Start difference. First operand has 40 places, 24 transitions, 127 flow. Second operand 7 states and 588 transitions. [2020-10-16 01:41:51,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 159 flow [2020-10-16 01:41:51,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 01:41:51,855 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2020-10-16 01:41:51,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2020-10-16 01:41:51,856 INFO L342 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2020-10-16 01:41:51,856 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2020-10-16 01:41:51,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:41:51,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:41:51,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:41:51 BasicIcfg [2020-10-16 01:41:51,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:41:51,868 INFO L168 Benchmark]: Toolchain (without parser) took 4363.00 ms. Allocated memory was 252.2 MB in the beginning and 372.2 MB in the end (delta: 120.1 MB). Free memory was 207.3 MB in the beginning and 244.8 MB in the end (delta: -37.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,869 INFO L168 Benchmark]: CDTParser took 0.44 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. [2020-10-16 01:41:51,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.60 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 207.3 MB in the beginning and 268.5 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 317.7 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,879 INFO L168 Benchmark]: Boogie Preprocessor took 25.24 ms. Allocated memory is still 317.7 MB. Free memory was 266.0 MB in the beginning and 263.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,880 INFO L168 Benchmark]: RCFGBuilder took 412.55 ms. Allocated memory is still 317.7 MB. Free memory was 263.5 MB in the beginning and 241.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,881 INFO L168 Benchmark]: TraceAbstraction took 3100.92 ms. Allocated memory was 317.7 MB in the beginning and 372.2 MB in the end (delta: 54.5 MB). Free memory was 241.6 MB in the beginning and 244.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 51.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:41:51,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 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 767.60 ms. Allocated memory was 252.2 MB in the beginning and 317.7 MB in the end (delta: 65.5 MB). Free memory was 207.3 MB in the beginning and 268.5 MB in the end (delta: -61.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 51.23 ms. Allocated memory is still 317.7 MB. Free memory was 268.5 MB in the beginning and 266.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.24 ms. Allocated memory is still 317.7 MB. Free memory was 266.0 MB in the beginning and 263.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 412.55 ms. Allocated memory is still 317.7 MB. Free memory was 263.5 MB in the beginning and 241.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3100.92 ms. Allocated memory was 317.7 MB in the beginning and 372.2 MB in the end (delta: 54.5 MB). Free memory was 241.6 MB in the beginning and 244.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 51.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 504 VarBasedMoverChecksPositive, 45 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 38 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 65 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 63 PlacesBefore, 26 PlacesAfterwards, 54 TransitionsBefore, 16 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1499 MoverChecksTotal - 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: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 27 SDtfs, 17 SDslu, 10 SDs, 0 SdLazy, 100 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 0.4s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 2525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...