/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/safe008_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:38:18,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:38:18,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:38:18,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:38:18,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:38:18,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:38:18,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:38:18,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:38:18,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:38:18,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:38:18,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:38:18,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:38:18,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:38:18,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:38:18,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:38:18,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:38:18,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:38:18,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:38:18,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:38:18,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:38:18,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:38:18,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:38:18,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:38:18,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:38:18,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 01:38:18,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 01:38:18,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 01:38:18,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 01:38:18,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 01:38:18,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 01:38:18,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:38:18,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:38:18,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:38:18,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:38:18,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:38:18,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:38:18,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:38:18,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:38:18,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:38:18,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:38:18,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:38:18,927 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 01:38:18,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:38:18,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:38:18,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:38:18,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:38:18,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:38:18,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:38:18,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:38:18,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:38:18,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:38:18,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:38:18,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:38:18,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:38:18,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:38:18,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:38:18,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:38:18,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:38:18,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:38:18,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:38:18,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:38:18,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:38:18,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:38:18,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:38:18,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:38:18,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:38:19,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:38:19,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:38:19,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:38:19,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:38:19,280 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:38:19,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 01:38:19,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9348a8b/f6bb619706c348fa9a50c4a0473b7d0e/FLAGb169451ea [2020-10-16 01:38:19,821 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:38:19,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.opt.i [2020-10-16 01:38:19,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9348a8b/f6bb619706c348fa9a50c4a0473b7d0e/FLAGb169451ea [2020-10-16 01:38:20,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9348a8b/f6bb619706c348fa9a50c4a0473b7d0e [2020-10-16 01:38:20,163 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:38:20,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:38:20,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:38:20,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:38:20,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:38:20,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20, skipping insertion in model container [2020-10-16 01:38:20,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:38:20,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:38:20,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:38:20,759 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:38:20,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:38:20,898 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:38:20,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20 WrapperNode [2020-10-16 01:38:20,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:38:20,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:38:20,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:38:20,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:38:20,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:38:20,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:38:20,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:38:20,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:38:20,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (1/1) ... [2020-10-16 01:38:20,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:38:20,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:38:20,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:38:20,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:38:20,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (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 01:38:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:38:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 01:38:21,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:38:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:38:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 01:38:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 01:38:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 01:38:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 01:38:21,029 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 01:38:21,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 01:38:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 01:38:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:38:21,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:38:21,032 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 01:38:21,393 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:38:21,393 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 01:38:21,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:21 BoogieIcfgContainer [2020-10-16 01:38:21,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:38:21,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:38:21,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:38:21,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:38:21,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:38:20" (1/3) ... [2020-10-16 01:38:21,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110ed15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:21, skipping insertion in model container [2020-10-16 01:38:21,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:38:20" (2/3) ... [2020-10-16 01:38:21,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1110ed15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:38:21, skipping insertion in model container [2020-10-16 01:38:21,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:38:21" (3/3) ... [2020-10-16 01:38:21,403 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2020-10-16 01:38:21,415 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:38:21,421 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:38:21,422 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:38:21,445 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,446 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,446 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,446 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,447 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,449 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,449 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,450 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,450 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,454 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,454 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,463 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,464 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,466 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,466 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,466 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,466 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:38:21,483 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:38:21,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:38:21,504 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:38:21,504 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:38:21,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:38:21,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:38:21,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:38:21,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:38:21,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:38:21,518 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:38:21,562 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 01:38:21,562 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:38:21,572 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 01:38:21,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 01:38:21,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-16 01:38:21,583 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:38:21,586 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:38:21,588 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 56 transitions, 121 flow [2020-10-16 01:38:21,589 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 121 flow [2020-10-16 01:38:21,616 INFO L129 PetriNetUnfolder]: 1/56 cut-off events. [2020-10-16 01:38:21,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:38:21,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 56 events. 1/56 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. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 01:38:21,619 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 01:38:22,873 INFO L132 LiptonReduction]: Checked pairs total: 1693 [2020-10-16 01:38:22,874 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 01:38:22,877 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1297 [2020-10-16 01:38:22,884 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 01:38:22,884 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:38:22,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:22,886 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:22,886 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash 158172579, now seen corresponding path program 1 times [2020-10-16 01:38:22,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:22,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253480685] [2020-10-16 01:38:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,113 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 01:38:23,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253480685] [2020-10-16 01:38:23,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:38:23,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510741097] [2020-10-16 01:38:23,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:38:23,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:38:23,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:38:23,144 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 113 [2020-10-16 01:38:23,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states. [2020-10-16 01:38:23,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 113 [2020-10-16 01:38:23,148 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,165 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:38:23,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:38:23,165 INFO L80 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:38:23,167 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:38:23,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 49 flow [2020-10-16 01:38:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:38:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:38:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2020-10-16 01:38:23,183 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8849557522123894 [2020-10-16 01:38:23,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2020-10-16 01:38:23,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2020-10-16 01:38:23,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2020-10-16 01:38:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:38:23,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:38:23,199 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:38:23,201 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 300 transitions. [2020-10-16 01:38:23,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 49 flow [2020-10-16 01:38:23,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 01:38:23,207 INFO L241 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2020-10-16 01:38:23,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2020-10-16 01:38:23,210 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2020-10-16 01:38:23,210 INFO L481 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2020-10-16 01:38:23,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:38:23,211 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,211 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:38:23,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash 607157492, now seen corresponding path program 1 times [2020-10-16 01:38:23,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870924871] [2020-10-16 01:38:23,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,288 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 01:38:23,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870924871] [2020-10-16 01:38:23,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:38:23,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362540201] [2020-10-16 01:38:23,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:38:23,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:38:23,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:38:23,295 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2020-10-16 01:38:23,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states. [2020-10-16 01:38:23,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2020-10-16 01:38:23,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,328 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:38:23,329 INFO L130 PetriNetUnfolder]: For 5/12 co-relation queries the response was YES. [2020-10-16 01:38:23,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 22 events. 0/22 cut-off events. For 5/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:38:23,331 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 01:38:23,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 63 flow [2020-10-16 01:38:23,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:38:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:38:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2020-10-16 01:38:23,336 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8296460176991151 [2020-10-16 01:38:23,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2020-10-16 01:38:23,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2020-10-16 01:38:23,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2020-10-16 01:38:23,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:38:23,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:38:23,342 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:38:23,342 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 375 transitions. [2020-10-16 01:38:23,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 63 flow [2020-10-16 01:38:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 57 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:38:23,344 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2020-10-16 01:38:23,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2020-10-16 01:38:23,346 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 01:38:23,346 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 58 flow [2020-10-16 01:38:23,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:38:23,346 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,346 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:38:23,347 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash 539312677, now seen corresponding path program 1 times [2020-10-16 01:38:23,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274579008] [2020-10-16 01:38:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,431 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 01:38:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274579008] [2020-10-16 01:38:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:38:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914339126] [2020-10-16 01:38:23,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:38:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:38:23,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:38:23,435 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 113 [2020-10-16 01:38:23,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 58 flow. Second operand 3 states. [2020-10-16 01:38:23,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 113 [2020-10-16 01:38:23,436 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,446 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 01:38:23,446 INFO L130 PetriNetUnfolder]: For 15/17 co-relation queries the response was YES. [2020-10-16 01:38:23,446 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 17 events. 0/17 cut-off events. For 15/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2020-10-16 01:38:23,447 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2020-10-16 01:38:23,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 17 transitions, 64 flow [2020-10-16 01:38:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:38:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:38:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 01:38:23,449 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8613569321533924 [2020-10-16 01:38:23,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 01:38:23,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 01:38:23,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 01:38:23,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:38:23,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:38:23,452 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:38:23,453 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 58 flow. Second operand 3 states and 292 transitions. [2020-10-16 01:38:23,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 17 transitions, 64 flow [2020-10-16 01:38:23,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 52 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 01:38:23,454 INFO L241 Difference]: Finished difference. Result has 29 places, 17 transitions, 54 flow [2020-10-16 01:38:23,455 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=17} [2020-10-16 01:38:23,455 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:38:23,455 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 17 transitions, 54 flow [2020-10-16 01:38:23,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:38:23,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,456 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:38:23,456 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash 658078901, now seen corresponding path program 1 times [2020-10-16 01:38:23,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850180925] [2020-10-16 01:38:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,535 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 01:38:23,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850180925] [2020-10-16 01:38:23,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:38:23,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605329575] [2020-10-16 01:38:23,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:38:23,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:38:23,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:38:23,539 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 113 [2020-10-16 01:38:23,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 17 transitions, 54 flow. Second operand 4 states. [2020-10-16 01:38:23,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 113 [2020-10-16 01:38:23,540 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,560 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2020-10-16 01:38:23,560 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2020-10-16 01:38:23,561 INFO L80 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 22 events. 0/22 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 2/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-16 01:38:23,561 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 1 selfloop transitions, 3 changer transitions 1/18 dead transitions. [2020-10-16 01:38:23,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 18 transitions, 69 flow [2020-10-16 01:38:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 01:38:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 01:38:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2020-10-16 01:38:23,563 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8207964601769911 [2020-10-16 01:38:23,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2020-10-16 01:38:23,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2020-10-16 01:38:23,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2020-10-16 01:38:23,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 01:38:23,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 01:38:23,567 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 01:38:23,567 INFO L185 Difference]: Start difference. First operand has 29 places, 17 transitions, 54 flow. Second operand 4 states and 371 transitions. [2020-10-16 01:38:23,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 18 transitions, 69 flow [2020-10-16 01:38:23,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 18 transitions, 63 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 01:38:23,568 INFO L241 Difference]: Finished difference. Result has 32 places, 17 transitions, 64 flow [2020-10-16 01:38:23,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2020-10-16 01:38:23,569 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2020-10-16 01:38:23,569 INFO L481 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 64 flow [2020-10-16 01:38:23,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:38:23,569 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,570 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:38:23,570 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash 461677915, now seen corresponding path program 1 times [2020-10-16 01:38:23,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302530850] [2020-10-16 01:38:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,632 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 01:38:23,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302530850] [2020-10-16 01:38:23,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:38:23,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693779890] [2020-10-16 01:38:23,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 01:38:23,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 01:38:23,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 01:38:23,636 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:38:23,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 64 flow. Second operand 4 states. [2020-10-16 01:38:23,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:38:23,637 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,678 INFO L129 PetriNetUnfolder]: 28/69 cut-off events. [2020-10-16 01:38:23,681 INFO L130 PetriNetUnfolder]: For 131/142 co-relation queries the response was YES. [2020-10-16 01:38:23,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 69 events. 28/69 cut-off events. For 131/142 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 205 event pairs, 12 based on Foata normal form. 9/73 useless extension candidates. Maximal degree in co-relation 163. Up to 45 conditions per place. [2020-10-16 01:38:23,683 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2020-10-16 01:38:23,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 116 flow [2020-10-16 01:38:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 01:38:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 01:38:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2020-10-16 01:38:23,686 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7486725663716814 [2020-10-16 01:38:23,686 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2020-10-16 01:38:23,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2020-10-16 01:38:23,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2020-10-16 01:38:23,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 01:38:23,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 01:38:23,689 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 01:38:23,689 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 64 flow. Second operand 5 states and 423 transitions. [2020-10-16 01:38:23,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 116 flow [2020-10-16 01:38:23,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 100 flow, removed 3 selfloop flow, removed 5 redundant places. [2020-10-16 01:38:23,691 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 84 flow [2020-10-16 01:38:23,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2020-10-16 01:38:23,692 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2020-10-16 01:38:23,692 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 84 flow [2020-10-16 01:38:23,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 01:38:23,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,692 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:38:23,693 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1107418127, now seen corresponding path program 1 times [2020-10-16 01:38:23,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390613265] [2020-10-16 01:38:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,748 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 01:38:23,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390613265] [2020-10-16 01:38:23,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 01:38:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146341765] [2020-10-16 01:38:23,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 01:38:23,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 01:38:23,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 01:38:23,751 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:38:23,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 84 flow. Second operand 5 states. [2020-10-16 01:38:23,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:38:23,752 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,809 INFO L129 PetriNetUnfolder]: 16/50 cut-off events. [2020-10-16 01:38:23,809 INFO L130 PetriNetUnfolder]: For 71/114 co-relation queries the response was YES. [2020-10-16 01:38:23,809 INFO L80 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 50 events. 16/50 cut-off events. For 71/114 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 126 event pairs, 2 based on Foata normal form. 17/65 useless extension candidates. Maximal degree in co-relation 166. Up to 35 conditions per place. [2020-10-16 01:38:23,810 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2020-10-16 01:38:23,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 180 flow [2020-10-16 01:38:23,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 01:38:23,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 01:38:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2020-10-16 01:38:23,813 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7477876106194691 [2020-10-16 01:38:23,813 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2020-10-16 01:38:23,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2020-10-16 01:38:23,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2020-10-16 01:38:23,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 01:38:23,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 01:38:23,817 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 01:38:23,817 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 84 flow. Second operand 6 states and 507 transitions. [2020-10-16 01:38:23,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 180 flow [2020-10-16 01:38:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2020-10-16 01:38:23,820 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 134 flow [2020-10-16 01:38:23,820 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2020-10-16 01:38:23,820 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 01:38:23,820 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 134 flow [2020-10-16 01:38:23,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 01:38:23,821 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,821 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:38:23,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1334626881, now seen corresponding path program 1 times [2020-10-16 01:38:23,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 01:38:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,884 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 01:38:23,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842209744] [2020-10-16 01:38:23,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 01:38:23,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454984991] [2020-10-16 01:38:23,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 01:38:23,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 01:38:23,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 01:38:23,888 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 113 [2020-10-16 01:38:23,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 134 flow. Second operand 6 states. [2020-10-16 01:38:23,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 113 [2020-10-16 01:38:23,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,943 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2020-10-16 01:38:23,943 INFO L130 PetriNetUnfolder]: For 90/124 co-relation queries the response was YES. [2020-10-16 01:38:23,944 INFO L80 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 32 events. 7/32 cut-off events. For 90/124 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 16/47 useless extension candidates. Maximal degree in co-relation 124. Up to 20 conditions per place. [2020-10-16 01:38:23,944 INFO L132 encePairwiseOnDemand]: 107/113 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2020-10-16 01:38:23,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 202 flow [2020-10-16 01:38:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 01:38:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-16 01:38:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 585 transitions. [2020-10-16 01:38:23,947 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7395701643489254 [2020-10-16 01:38:23,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 585 transitions. [2020-10-16 01:38:23,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 585 transitions. [2020-10-16 01:38:23,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 585 transitions. [2020-10-16 01:38:23,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-16 01:38:23,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-16 01:38:23,951 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-16 01:38:23,951 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 134 flow. Second operand 7 states and 585 transitions. [2020-10-16 01:38:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 202 flow [2020-10-16 01:38:23,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 166 flow, removed 14 selfloop flow, removed 4 redundant places. [2020-10-16 01:38:23,954 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 136 flow [2020-10-16 01:38:23,955 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2020-10-16 01:38:23,955 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 01:38:23,955 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 136 flow [2020-10-16 01:38:23,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 01:38:23,955 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:38:23,955 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:38:23,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:38:23,956 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:38:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:38:23,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1041895041, now seen corresponding path program 1 times [2020-10-16 01:38:23,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:38:23,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647880569] [2020-10-16 01:38:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:38:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:38:23,983 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 01:38:23,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647880569] [2020-10-16 01:38:23,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:38:23,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:38:23,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121938814] [2020-10-16 01:38:23,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:38:23,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:38:23,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:38:23,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:38:23,986 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 113 [2020-10-16 01:38:23,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 136 flow. Second operand 3 states. [2020-10-16 01:38:23,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:38:23,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 113 [2020-10-16 01:38:23,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:38:23,995 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2020-10-16 01:38:23,995 INFO L130 PetriNetUnfolder]: For 46/53 co-relation queries the response was YES. [2020-10-16 01:38:23,995 INFO L80 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 25 events. 5/25 cut-off events. For 46/53 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 78. Up to 11 conditions per place. [2020-10-16 01:38:23,995 INFO L132 encePairwiseOnDemand]: 111/113 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2020-10-16 01:38:23,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 22 transitions, 132 flow [2020-10-16 01:38:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:38:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:38:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2020-10-16 01:38:23,997 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8525073746312685 [2020-10-16 01:38:23,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2020-10-16 01:38:23,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2020-10-16 01:38:23,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:38:23,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2020-10-16 01:38:23,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:38:24,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:38:24,000 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:38:24,000 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 136 flow. Second operand 3 states and 289 transitions. [2020-10-16 01:38:24,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 22 transitions, 132 flow [2020-10-16 01:38:24,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 98 flow, removed 9 selfloop flow, removed 5 redundant places. [2020-10-16 01:38:24,002 INFO L241 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2020-10-16 01:38:24,003 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2020-10-16 01:38:24,003 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2020-10-16 01:38:24,003 INFO L481 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2020-10-16 01:38:24,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:38:24,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:38:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:38:24 BasicIcfg [2020-10-16 01:38:24,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 01:38:24,010 INFO L168 Benchmark]: Toolchain (without parser) took 3844.59 ms. Allocated memory was 252.2 MB in the beginning and 370.7 MB in the end (delta: 118.5 MB). Free memory was 207.3 MB in the beginning and 256.5 MB in the end (delta: -49.1 MB). Peak memory consumption was 69.3 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,011 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. [2020-10-16 01:38:24,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.21 ms. Allocated memory was 252.2 MB in the beginning and 316.1 MB in the end (delta: 64.0 MB). Free memory was 207.3 MB in the beginning and 269.2 MB in the end (delta: -61.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 316.1 MB. Free memory was 269.2 MB in the beginning and 266.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,013 INFO L168 Benchmark]: Boogie Preprocessor took 25.89 ms. Allocated memory is still 316.1 MB. Free memory was 266.6 MB in the beginning and 264.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,014 INFO L168 Benchmark]: RCFGBuilder took 422.16 ms. Allocated memory is still 316.1 MB. Free memory was 264.1 MB in the beginning and 242.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,015 INFO L168 Benchmark]: TraceAbstraction took 2611.31 ms. Allocated memory was 316.1 MB in the beginning and 370.7 MB in the end (delta: 54.5 MB). Free memory was 242.3 MB in the beginning and 256.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 14.2 GB. [2020-10-16 01:38:24,018 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 733.21 ms. Allocated memory was 252.2 MB in the beginning and 316.1 MB in the end (delta: 64.0 MB). Free memory was 207.3 MB in the beginning and 269.2 MB in the end (delta: -61.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 316.1 MB. Free memory was 269.2 MB in the beginning and 266.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 25.89 ms. Allocated memory is still 316.1 MB. Free memory was 266.6 MB in the beginning and 264.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 422.16 ms. Allocated memory is still 316.1 MB. Free memory was 264.1 MB in the beginning and 242.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2611.31 ms. Allocated memory was 316.1 MB in the beginning and 370.7 MB in the end (delta: 54.5 MB). Free memory was 242.3 MB in the beginning and 256.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 609 VarBasedMoverChecksPositive, 43 VarBasedMoverChecksNegative, 7 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 65 PlacesBefore, 27 PlacesAfterwards, 56 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1693 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, 69 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: 2.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 24 SDtfs, 11 SDslu, 13 SDs, 0 SdLazy, 101 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 3037 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...