/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 14:46:45,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 14:46:45,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 14:46:45,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 14:46:45,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 14:46:45,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 14:46:45,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 14:46:45,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 14:46:45,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 14:46:45,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 14:46:45,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 14:46:45,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 14:46:45,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 14:46:45,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 14:46:45,795 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 14:46:45,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 14:46:45,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 14:46:45,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 14:46:45,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 14:46:45,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 14:46:45,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 14:46:45,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 14:46:45,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 14:46:45,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 14:46:45,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 14:46:45,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 14:46:45,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 14:46:45,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 14:46:45,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 14:46:45,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 14:46:45,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 14:46:45,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 14:46:45,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 14:46:45,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 14:46:45,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 14:46:45,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 14:46:45,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 14:46:45,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 14:46:45,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 14:46:45,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 14:46:45,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 14:46:45,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 14:46:45,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 14:46:45,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 14:46:45,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 14:46:45,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 14:46:45,875 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 14:46:45,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 14:46:45,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 14:46:45,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 14:46:45,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 14:46:45,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 14:46:45,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 14:46:45,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 14:46:45,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 14:46:45,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 14:46:45,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 14:46:45,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 14:46:45,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 14:46:45,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 14:46:45,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 14:46:45,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 14:46:45,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 14:46:45,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:46:45,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 14:46:45,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 14:46:45,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 14:46:46,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 14:46:46,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 14:46:46,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 14:46:46,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 14:46:46,184 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 14:46:46,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2020-10-09 14:46:46,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e0f51d7/d118a44bed064def9baa1bdc7e22e33f/FLAG5332f8b66 [2020-10-09 14:46:46,839 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 14:46:46,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2020-10-09 14:46:46,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e0f51d7/d118a44bed064def9baa1bdc7e22e33f/FLAG5332f8b66 [2020-10-09 14:46:47,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98e0f51d7/d118a44bed064def9baa1bdc7e22e33f [2020-10-09 14:46:47,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 14:46:47,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 14:46:47,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 14:46:47,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 14:46:47,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 14:46:47,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e15ceb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47, skipping insertion in model container [2020-10-09 14:46:47,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 14:46:47,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 14:46:47,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:46:47,663 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 14:46:47,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 14:46:47,843 INFO L208 MainTranslator]: Completed translation [2020-10-09 14:46:47,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47 WrapperNode [2020-10-09 14:46:47,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 14:46:47,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 14:46:47,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 14:46:47,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 14:46:47,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 14:46:47,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 14:46:47,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 14:46:47,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 14:46:47,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... [2020-10-09 14:46:47,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 14:46:47,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 14:46:47,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 14:46:47,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 14:46:47,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 14:46:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-09 14:46:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-09 14:46:48,023 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-09 14:46:48,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-09 14:46:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 14:46:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 14:46:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 14:46:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 14:46:48,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 14:46:48,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 14:46:48,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 14:46:48,027 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 14:46:48,388 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 14:46:48,389 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-09 14:46:48,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:46:48 BoogieIcfgContainer [2020-10-09 14:46:48,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 14:46:48,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 14:46:48,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 14:46:48,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 14:46:48,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 02:46:47" (1/3) ... [2020-10-09 14:46:48,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9341ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:46:48, skipping insertion in model container [2020-10-09 14:46:48,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 02:46:47" (2/3) ... [2020-10-09 14:46:48,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9341ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 02:46:48, skipping insertion in model container [2020-10-09 14:46:48,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 02:46:48" (3/3) ... [2020-10-09 14:46:48,405 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2020-10-09 14:46:48,428 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 14:46:48,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 14:46:48,442 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 14:46:48,477 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,478 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,478 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,478 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,479 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,479 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,480 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,480 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,480 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,481 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,481 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,481 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,481 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,482 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,482 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,483 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,483 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,483 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,483 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,484 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,484 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,484 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,485 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,493 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,494 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,494 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,494 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,501 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,501 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,501 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,501 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,502 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,502 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,509 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,510 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,510 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,510 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,511 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,511 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 14:46:48,532 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-09 14:46:48,555 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 14:46:48,555 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 14:46:48,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 14:46:48,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 14:46:48,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 14:46:48,556 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 14:46:48,556 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 14:46:48,556 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 14:46:48,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 120 flow [2020-10-09 14:46:48,609 INFO L129 PetriNetUnfolder]: 5/53 cut-off events. [2020-10-09 14:46:48,609 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:48,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 53 events. 5/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2020-10-09 14:46:48,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 55 transitions, 120 flow [2020-10-09 14:46:48,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 53 transitions, 112 flow [2020-10-09 14:46:48,641 INFO L129 PetriNetUnfolder]: 4/43 cut-off events. [2020-10-09 14:46:48,642 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:48,642 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:48,643 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:48,644 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:48,652 INFO L82 PathProgramCache]: Analyzing trace with hash 305903693, now seen corresponding path program 1 times [2020-10-09 14:46:48,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:48,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656139846] [2020-10-09 14:46:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:48,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 14:46:48,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:48,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:48,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:48,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:49,010 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:49,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656139846] [2020-10-09 14:46:49,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:46:49,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-09 14:46:49,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457335550] [2020-10-09 14:46:49,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 14:46:49,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:49,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 14:46:49,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-09 14:46:49,219 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:49,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 112 flow. Second operand 9 states. [2020-10-09 14:46:49,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:49,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:49,223 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:49,573 INFO L129 PetriNetUnfolder]: 73/340 cut-off events. [2020-10-09 14:46:49,574 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 14:46:49,577 INFO L80 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 340 events. 73/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1887 event pairs, 0 based on Foata normal form. 78/390 useless extension candidates. Maximal degree in co-relation 444. Up to 45 conditions per place. [2020-10-09 14:46:49,580 INFO L132 encePairwiseOnDemand]: 44/55 looper letters, 17 selfloop transitions, 16 changer transitions 18/92 dead transitions. [2020-10-09 14:46:49,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 92 transitions, 292 flow [2020-10-09 14:46:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-09 14:46:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-09 14:46:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 775 transitions. [2020-10-09 14:46:49,602 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8806818181818182 [2020-10-09 14:46:49,603 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 775 transitions. [2020-10-09 14:46:49,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 775 transitions. [2020-10-09 14:46:49,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:49,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 775 transitions. [2020-10-09 14:46:49,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 17 states. [2020-10-09 14:46:49,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 17 states. [2020-10-09 14:46:49,625 INFO L81 ComplementDD]: Finished complementDD. Result 17 states. [2020-10-09 14:46:49,627 INFO L185 Difference]: Start difference. First operand has 55 places, 53 transitions, 112 flow. Second operand 16 states and 775 transitions. [2020-10-09 14:46:49,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 92 transitions, 292 flow [2020-10-09 14:46:49,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-09 14:46:49,637 INFO L241 Difference]: Finished difference. Result has 82 places, 67 transitions, 250 flow [2020-10-09 14:46:49,640 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=250, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2020-10-09 14:46:49,641 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2020-10-09 14:46:49,641 INFO L481 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 250 flow [2020-10-09 14:46:49,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 14:46:49,641 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:49,642 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:49,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 14:46:49,864 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:49,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:49,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1723906183, now seen corresponding path program 1 times [2020-10-09 14:46:49,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:49,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24446082] [2020-10-09 14:46:49,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:49,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-09 14:46:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:49,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:50,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:50,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:50,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24446082] [2020-10-09 14:46:50,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:46:50,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2020-10-09 14:46:50,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099822474] [2020-10-09 14:46:50,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-09 14:46:50,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-09 14:46:50,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-09 14:46:50,328 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:50,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 250 flow. Second operand 11 states. [2020-10-09 14:46:50,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:50,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:50,330 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:50,829 INFO L129 PetriNetUnfolder]: 96/452 cut-off events. [2020-10-09 14:46:50,830 INFO L130 PetriNetUnfolder]: For 1731/1846 co-relation queries the response was YES. [2020-10-09 14:46:50,836 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 452 events. 96/452 cut-off events. For 1731/1846 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2535 event pairs, 1 based on Foata normal form. 25/434 useless extension candidates. Maximal degree in co-relation 1171. Up to 68 conditions per place. [2020-10-09 14:46:50,841 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 31 selfloop transitions, 42 changer transitions 43/150 dead transitions. [2020-10-09 14:46:50,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 150 transitions, 1174 flow [2020-10-09 14:46:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-09 14:46:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-09 14:46:50,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1062 transitions. [2020-10-09 14:46:50,848 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8395256916996048 [2020-10-09 14:46:50,849 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1062 transitions. [2020-10-09 14:46:50,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1062 transitions. [2020-10-09 14:46:50,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:50,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1062 transitions. [2020-10-09 14:46:50,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 24 states. [2020-10-09 14:46:50,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 24 states. [2020-10-09 14:46:50,859 INFO L81 ComplementDD]: Finished complementDD. Result 24 states. [2020-10-09 14:46:50,859 INFO L185 Difference]: Start difference. First operand has 82 places, 67 transitions, 250 flow. Second operand 23 states and 1062 transitions. [2020-10-09 14:46:50,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 150 transitions, 1174 flow [2020-10-09 14:46:50,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 150 transitions, 1098 flow, removed 37 selfloop flow, removed 5 redundant places. [2020-10-09 14:46:50,908 INFO L241 Difference]: Finished difference. Result has 113 places, 92 transitions, 713 flow [2020-10-09 14:46:50,909 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=713, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2020-10-09 14:46:50,914 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2020-10-09 14:46:50,914 INFO L481 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 713 flow [2020-10-09 14:46:50,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-09 14:46:50,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:50,915 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:51,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 14:46:51,126 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:51,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1269320736, now seen corresponding path program 1 times [2020-10-09 14:46:51,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:51,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379895113] [2020-10-09 14:46:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:51,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:51,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:51,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:51,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:51,307 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379895113] [2020-10-09 14:46:51,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2072813649] [2020-10-09 14:46:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:51,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:51,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:51,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:51,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:51,517 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860780090] [2020-10-09 14:46:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:51,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-09 14:46:51,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:51,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:51,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:51,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:51,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:51,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2020-10-09 14:46:51,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765772480] [2020-10-09 14:46:51,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-09 14:46:51,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:51,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-09 14:46:51,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-09 14:46:51,819 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:51,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 713 flow. Second operand 13 states. [2020-10-09 14:46:51,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:51,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:51,820 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:52,611 INFO L129 PetriNetUnfolder]: 98/500 cut-off events. [2020-10-09 14:46:52,611 INFO L130 PetriNetUnfolder]: For 4940/5111 co-relation queries the response was YES. [2020-10-09 14:46:52,617 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 500 events. 98/500 cut-off events. For 4940/5111 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2760 event pairs, 2 based on Foata normal form. 42/490 useless extension candidates. Maximal degree in co-relation 1732. Up to 78 conditions per place. [2020-10-09 14:46:52,623 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 44 selfloop transitions, 56 changer transitions 25/159 dead transitions. [2020-10-09 14:46:52,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 159 transitions, 2058 flow [2020-10-09 14:46:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-09 14:46:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-09 14:46:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1192 transitions. [2020-10-09 14:46:52,630 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8335664335664336 [2020-10-09 14:46:52,631 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1192 transitions. [2020-10-09 14:46:52,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1192 transitions. [2020-10-09 14:46:52,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:52,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1192 transitions. [2020-10-09 14:46:52,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 27 states. [2020-10-09 14:46:52,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 27 states. [2020-10-09 14:46:52,644 INFO L81 ComplementDD]: Finished complementDD. Result 27 states. [2020-10-09 14:46:52,644 INFO L185 Difference]: Start difference. First operand has 113 places, 92 transitions, 713 flow. Second operand 26 states and 1192 transitions. [2020-10-09 14:46:52,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 159 transitions, 2058 flow [2020-10-09 14:46:52,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 159 transitions, 1606 flow, removed 211 selfloop flow, removed 11 redundant places. [2020-10-09 14:46:52,690 INFO L241 Difference]: Finished difference. Result has 127 places, 114 transitions, 1030 flow [2020-10-09 14:46:52,691 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1030, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2020-10-09 14:46:52,692 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2020-10-09 14:46:52,692 INFO L481 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 1030 flow [2020-10-09 14:46:52,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-09 14:46:52,692 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:52,693 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:53,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:53,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:53,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:53,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1653313534, now seen corresponding path program 1 times [2020-10-09 14:46:53,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:53,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477368358] [2020-10-09 14:46:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:53,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:53,435 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:53,486 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477368358] [2020-10-09 14:46:53,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [403085436] [2020-10-09 14:46:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:53,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:53,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:53,679 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:53,689 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108055399] [2020-10-09 14:46:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:46:53,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-09 14:46:53,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:53,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:46:53,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:53,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:53,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:53,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 15 [2020-10-09 14:46:53,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120874835] [2020-10-09 14:46:53,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-09 14:46:53,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-09 14:46:53,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-09 14:46:53,974 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:53,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 1030 flow. Second operand 15 states. [2020-10-09 14:46:53,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:53,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:53,976 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:54,916 INFO L129 PetriNetUnfolder]: 111/618 cut-off events. [2020-10-09 14:46:54,917 INFO L130 PetriNetUnfolder]: For 8357/8454 co-relation queries the response was YES. [2020-10-09 14:46:54,923 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 618 events. 111/618 cut-off events. For 8357/8454 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3476 event pairs, 0 based on Foata normal form. 50/607 useless extension candidates. Maximal degree in co-relation 2323. Up to 78 conditions per place. [2020-10-09 14:46:54,929 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 36 selfloop transitions, 86 changer transitions 26/182 dead transitions. [2020-10-09 14:46:54,930 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 182 transitions, 2905 flow [2020-10-09 14:46:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-09 14:46:54,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-09 14:46:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1421 transitions. [2020-10-09 14:46:54,935 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8334310850439882 [2020-10-09 14:46:54,936 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1421 transitions. [2020-10-09 14:46:54,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1421 transitions. [2020-10-09 14:46:54,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:54,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1421 transitions. [2020-10-09 14:46:54,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 32 states. [2020-10-09 14:46:54,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 32 states. [2020-10-09 14:46:54,945 INFO L81 ComplementDD]: Finished complementDD. Result 32 states. [2020-10-09 14:46:54,945 INFO L185 Difference]: Start difference. First operand has 127 places, 114 transitions, 1030 flow. Second operand 31 states and 1421 transitions. [2020-10-09 14:46:54,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 182 transitions, 2905 flow [2020-10-09 14:46:54,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 182 transitions, 2478 flow, removed 205 selfloop flow, removed 10 redundant places. [2020-10-09 14:46:54,972 INFO L241 Difference]: Finished difference. Result has 157 places, 142 transitions, 1593 flow [2020-10-09 14:46:54,973 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1593, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2020-10-09 14:46:54,973 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2020-10-09 14:46:54,974 INFO L481 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1593 flow [2020-10-09 14:46:54,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-09 14:46:54,974 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:54,974 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:55,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:55,591 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:55,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1286568708, now seen corresponding path program 2 times [2020-10-09 14:46:55,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:55,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119777138] [2020-10-09 14:46:55,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:55,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:55,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:55,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-09 14:46:55,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:55,734 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:55,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:55,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119777138] [2020-10-09 14:46:55,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273210062] [2020-10-09 14:46:55,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:56,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:56,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:56,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:46:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:56,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:56,183 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:56,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:56,196 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:56,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178283866] [2020-10-09 14:46:56,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:56,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-09 14:46:56,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:56,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-09 14:46:56,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:56,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:56,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:56,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:56,338 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:56,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:46:56,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 24 [2020-10-09 14:46:56,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661795167] [2020-10-09 14:46:56,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-09 14:46:56,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:46:56,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-09 14:46:56,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2020-10-09 14:46:56,479 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:46:56,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 142 transitions, 1593 flow. Second operand 24 states. [2020-10-09 14:46:56,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:46:56,481 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:46:56,481 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:46:58,092 INFO L129 PetriNetUnfolder]: 147/817 cut-off events. [2020-10-09 14:46:58,094 INFO L130 PetriNetUnfolder]: For 16115/16241 co-relation queries the response was YES. [2020-10-09 14:46:58,107 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 817 events. 147/817 cut-off events. For 16115/16241 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4498 event pairs, 0 based on Foata normal form. 49/785 useless extension candidates. Maximal degree in co-relation 3486. Up to 101 conditions per place. [2020-10-09 14:46:58,118 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 60 selfloop transitions, 122 changer transitions 29/245 dead transitions. [2020-10-09 14:46:58,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 245 transitions, 4781 flow [2020-10-09 14:46:58,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-09 14:46:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-09 14:46:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2153 transitions. [2020-10-09 14:46:58,131 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8328820116054159 [2020-10-09 14:46:58,131 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2153 transitions. [2020-10-09 14:46:58,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2153 transitions. [2020-10-09 14:46:58,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:46:58,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2153 transitions. [2020-10-09 14:46:58,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 48 states. [2020-10-09 14:46:58,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 48 states. [2020-10-09 14:46:58,154 INFO L81 ComplementDD]: Finished complementDD. Result 48 states. [2020-10-09 14:46:58,154 INFO L185 Difference]: Start difference. First operand has 157 places, 142 transitions, 1593 flow. Second operand 47 states and 2153 transitions. [2020-10-09 14:46:58,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 245 transitions, 4781 flow [2020-10-09 14:46:58,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 245 transitions, 3805 flow, removed 438 selfloop flow, removed 21 redundant places. [2020-10-09 14:46:58,223 INFO L241 Difference]: Finished difference. Result has 197 places, 186 transitions, 2238 flow [2020-10-09 14:46:58,224 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=2238, PETRI_PLACES=197, PETRI_TRANSITIONS=186} [2020-10-09 14:46:58,225 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 142 predicate places. [2020-10-09 14:46:58,225 INFO L481 AbstractCegarLoop]: Abstraction has has 197 places, 186 transitions, 2238 flow [2020-10-09 14:46:58,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-09 14:46:58,225 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:46:58,225 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:46:58,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 mathsat -unsat_core_generation=3,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:58,840 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:46:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:46:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -226858967, now seen corresponding path program 3 times [2020-10-09 14:46:58,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:46:58,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556186556] [2020-10-09 14:46:58,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-09 14:46:58,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-09 14:46:58,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:58,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:46:58,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:59,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:59,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:59,231 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,258 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,283 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,314 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,337 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,362 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,394 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,408 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,425 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,442 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,465 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:59,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556186556] [2020-10-09 14:46:59,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2021601674] [2020-10-09 14:46:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:46:59,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-09 14:46:59,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:59,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:46:59,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:59,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:46:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:59,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:46:59,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,751 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,754 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,757 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,803 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,819 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,844 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,867 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,883 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:46:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:46:59,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190500058] [2020-10-09 14:46:59,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:46:59,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-09 14:46:59,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:46:59,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:46:59,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:46:59,998 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:00,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:00,018 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,042 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,083 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,099 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,117 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,132 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,148 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:00,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:47:00,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 27 [2020-10-09 14:47:00,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341559941] [2020-10-09 14:47:00,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-09 14:47:00,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:47:00,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-09 14:47:00,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-10-09 14:47:00,516 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:47:00,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 186 transitions, 2238 flow. Second operand 27 states. [2020-10-09 14:47:00,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:47:00,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:47:00,517 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:47:01,704 INFO L129 PetriNetUnfolder]: 193/1253 cut-off events. [2020-10-09 14:47:01,704 INFO L130 PetriNetUnfolder]: For 39391/39472 co-relation queries the response was YES. [2020-10-09 14:47:01,721 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 1253 events. 193/1253 cut-off events. For 39391/39472 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7915 event pairs, 0 based on Foata normal form. 38/1157 useless extension candidates. Maximal degree in co-relation 5599. Up to 148 conditions per place. [2020-10-09 14:47:01,735 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 136 selfloop transitions, 101 changer transitions 26/297 dead transitions. [2020-10-09 14:47:01,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 297 transitions, 6223 flow [2020-10-09 14:47:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-09 14:47:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-09 14:47:01,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1778 transitions. [2020-10-09 14:47:01,740 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.828904428904429 [2020-10-09 14:47:01,741 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1778 transitions. [2020-10-09 14:47:01,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1778 transitions. [2020-10-09 14:47:01,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:47:01,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1778 transitions. [2020-10-09 14:47:01,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 40 states. [2020-10-09 14:47:01,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 40 states. [2020-10-09 14:47:01,749 INFO L81 ComplementDD]: Finished complementDD. Result 40 states. [2020-10-09 14:47:01,749 INFO L185 Difference]: Start difference. First operand has 197 places, 186 transitions, 2238 flow. Second operand 39 states and 1778 transitions. [2020-10-09 14:47:01,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 297 transitions, 6223 flow [2020-10-09 14:47:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 297 transitions, 4646 flow, removed 755 selfloop flow, removed 22 redundant places. [2020-10-09 14:47:01,862 INFO L241 Difference]: Finished difference. Result has 220 places, 234 transitions, 2525 flow [2020-10-09 14:47:01,863 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2525, PETRI_PLACES=220, PETRI_TRANSITIONS=234} [2020-10-09 14:47:01,864 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 165 predicate places. [2020-10-09 14:47:01,864 INFO L481 AbstractCegarLoop]: Abstraction has has 220 places, 234 transitions, 2525 flow [2020-10-09 14:47:01,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-09 14:47:01,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:47:01,864 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:47:02,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3,14 cvc4 --incremental --print-success --lang smt --rewrite-divk,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:47:02,480 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:47:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:47:02,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1060204081, now seen corresponding path program 4 times [2020-10-09 14:47:02,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:47:02,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819772087] [2020-10-09 14:47:02,484 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-09 14:47:02,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:47:02,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:02,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:47:02,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:02,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:02,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:02,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:02,828 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,849 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,871 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,921 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,961 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,976 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:02,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,012 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,056 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:03,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819772087] [2020-10-09 14:47:03,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1144195183] [2020-10-09 14:47:03,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:03,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:47:03,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:03,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:47:03,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:03,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:03,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:03,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:03,385 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,388 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,391 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,403 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,407 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,413 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,432 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,450 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,466 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,490 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:03,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040951083] [2020-10-09 14:47:03,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:47:03,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-09 14:47:03,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:03,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-09 14:47:03,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:03,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:03,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:03,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:03,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,603 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,604 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,615 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,634 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,657 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,672 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,687 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:03,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:47:03,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 30 [2020-10-09 14:47:03,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605131313] [2020-10-09 14:47:03,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-09 14:47:03,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:47:03,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-09 14:47:03,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2020-10-09 14:47:04,564 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:47:04,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 234 transitions, 2525 flow. Second operand 30 states. [2020-10-09 14:47:04,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:47:04,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:47:04,566 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:47:06,276 INFO L129 PetriNetUnfolder]: 246/1652 cut-off events. [2020-10-09 14:47:06,277 INFO L130 PetriNetUnfolder]: For 64918/65207 co-relation queries the response was YES. [2020-10-09 14:47:06,307 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 1652 events. 246/1652 cut-off events. For 64918/65207 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 11554 event pairs, 0 based on Foata normal form. 47/1526 useless extension candidates. Maximal degree in co-relation 7489. Up to 200 conditions per place. [2020-10-09 14:47:06,335 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 92 selfloop transitions, 200 changer transitions 26/352 dead transitions. [2020-10-09 14:47:06,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 352 transitions, 6980 flow [2020-10-09 14:47:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-09 14:47:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-09 14:47:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2054 transitions. [2020-10-09 14:47:06,344 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8298989898989899 [2020-10-09 14:47:06,344 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2054 transitions. [2020-10-09 14:47:06,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2054 transitions. [2020-10-09 14:47:06,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:47:06,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2054 transitions. [2020-10-09 14:47:06,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 46 states. [2020-10-09 14:47:06,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 46 states. [2020-10-09 14:47:06,360 INFO L81 ComplementDD]: Finished complementDD. Result 46 states. [2020-10-09 14:47:06,360 INFO L185 Difference]: Start difference. First operand has 220 places, 234 transitions, 2525 flow. Second operand 45 states and 2054 transitions. [2020-10-09 14:47:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 352 transitions, 6980 flow [2020-10-09 14:47:06,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 352 transitions, 6138 flow, removed 387 selfloop flow, removed 19 redundant places. [2020-10-09 14:47:06,551 INFO L241 Difference]: Finished difference. Result has 255 places, 288 transitions, 3577 flow [2020-10-09 14:47:06,552 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3577, PETRI_PLACES=255, PETRI_TRANSITIONS=288} [2020-10-09 14:47:06,553 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 200 predicate places. [2020-10-09 14:47:06,553 INFO L481 AbstractCegarLoop]: Abstraction has has 255 places, 288 transitions, 3577 flow [2020-10-09 14:47:06,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-09 14:47:06,553 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:47:06,553 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:47:07,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:07,198 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:47:07,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:47:07,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1570819313, now seen corresponding path program 5 times [2020-10-09 14:47:07,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:47:07,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33919046] [2020-10-09 14:47:07,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-10-09 14:47:07,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-09 14:47:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:07,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:47:07,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:07,346 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:07,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:07,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:07,491 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:07,518 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:07,544 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:07,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:07,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:07,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33919046] [2020-10-09 14:47:07,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [695185267] [2020-10-09 14:47:07,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:07,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-09 14:47:07,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:07,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:47:07,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:07,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:07,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:08,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:08,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,020 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,028 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590259256] [2020-10-09 14:47:08,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:47:08,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-09 14:47:08,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:08,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-09 14:47:08,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:08,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:08,185 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:08,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:08,202 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,205 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,207 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,210 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,213 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:08,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:47:08,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19, 19, 19, 19] total 31 [2020-10-09 14:47:08,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540530467] [2020-10-09 14:47:08,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-09 14:47:08,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:47:08,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-09 14:47:08,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2020-10-09 14:47:09,193 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:47:09,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 288 transitions, 3577 flow. Second operand 31 states. [2020-10-09 14:47:09,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:47:09,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:47:09,195 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:47:11,448 INFO L129 PetriNetUnfolder]: 284/1929 cut-off events. [2020-10-09 14:47:11,449 INFO L130 PetriNetUnfolder]: For 105023/105290 co-relation queries the response was YES. [2020-10-09 14:47:11,475 INFO L80 FinitePrefix]: Finished finitePrefix Result has 9977 conditions, 1929 events. 284/1929 cut-off events. For 105023/105290 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 14001 event pairs, 0 based on Foata normal form. 56/1782 useless extension candidates. Maximal degree in co-relation 9873. Up to 229 conditions per place. [2020-10-09 14:47:11,491 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 65 selfloop transitions, 260 changer transitions 29/388 dead transitions. [2020-10-09 14:47:11,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 388 transitions, 9342 flow [2020-10-09 14:47:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-09 14:47:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-09 14:47:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 2469 transitions. [2020-10-09 14:47:11,496 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8313131313131313 [2020-10-09 14:47:11,497 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 2469 transitions. [2020-10-09 14:47:11,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 2469 transitions. [2020-10-09 14:47:11,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:47:11,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 2469 transitions. [2020-10-09 14:47:11,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 55 states. [2020-10-09 14:47:11,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 55 states. [2020-10-09 14:47:11,508 INFO L81 ComplementDD]: Finished complementDD. Result 55 states. [2020-10-09 14:47:11,508 INFO L185 Difference]: Start difference. First operand has 255 places, 288 transitions, 3577 flow. Second operand 54 states and 2469 transitions. [2020-10-09 14:47:11,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 388 transitions, 9342 flow [2020-10-09 14:47:11,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 388 transitions, 8068 flow, removed 565 selfloop flow, removed 25 redundant places. [2020-10-09 14:47:11,665 INFO L241 Difference]: Finished difference. Result has 297 places, 325 transitions, 4636 flow [2020-10-09 14:47:11,666 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=4636, PETRI_PLACES=297, PETRI_TRANSITIONS=325} [2020-10-09 14:47:11,667 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 242 predicate places. [2020-10-09 14:47:11,667 INFO L481 AbstractCegarLoop]: Abstraction has has 297 places, 325 transitions, 4636 flow [2020-10-09 14:47:11,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-09 14:47:11,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:47:11,667 INFO L255 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:47:12,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3,21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:12,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:47:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:47:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash 831402353, now seen corresponding path program 6 times [2020-10-09 14:47:12,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:47:12,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117913178] [2020-10-09 14:47:12,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-10-09 14:47:12,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-09 14:47:12,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:12,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-09 14:47:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:12,540 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:12,562 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:12,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:12,632 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:12,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117913178] [2020-10-09 14:47:12,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1038322035] [2020-10-09 14:47:12,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:13,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-09 14:47:13,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:13,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-09 14:47:13,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:13,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:13,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:13,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:13,087 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:13,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605672943] [2020-10-09 14:47:13,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-09 14:47:13,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-09 14:47:13,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-09 14:47:13,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-09 14:47:13,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:13,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-09 14:47:13,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 14:47:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:13,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:13,375 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-09 14:47:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 14:47:13,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-10-09 14:47:13,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22, 22, 22, 22] total 30 [2020-10-09 14:47:13,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140827609] [2020-10-09 14:47:13,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-09 14:47:13,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:47:13,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-09 14:47:13,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2020-10-09 14:47:13,679 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 55 [2020-10-09 14:47:13,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 325 transitions, 4636 flow. Second operand 30 states. [2020-10-09 14:47:13,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:47:13,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 55 [2020-10-09 14:47:13,681 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:47:16,805 INFO L129 PetriNetUnfolder]: 318/2208 cut-off events. [2020-10-09 14:47:16,805 INFO L130 PetriNetUnfolder]: For 175672/175868 co-relation queries the response was YES. [2020-10-09 14:47:16,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 13124 conditions, 2208 events. 318/2208 cut-off events. For 175672/175868 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 16295 event pairs, 0 based on Foata normal form. 57/2032 useless extension candidates. Maximal degree in co-relation 13005. Up to 257 conditions per place. [2020-10-09 14:47:16,882 INFO L132 encePairwiseOnDemand]: 48/55 looper letters, 79 selfloop transitions, 295 changer transitions 26/434 dead transitions. [2020-10-09 14:47:16,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 434 transitions, 11950 flow [2020-10-09 14:47:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-09 14:47:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-09 14:47:16,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 2788 transitions. [2020-10-09 14:47:16,889 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8309985096870343 [2020-10-09 14:47:16,890 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 2788 transitions. [2020-10-09 14:47:16,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 2788 transitions. [2020-10-09 14:47:16,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:47:16,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 2788 transitions. [2020-10-09 14:47:16,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 62 states. [2020-10-09 14:47:16,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 62 states. [2020-10-09 14:47:16,902 INFO L81 ComplementDD]: Finished complementDD. Result 62 states. [2020-10-09 14:47:16,902 INFO L185 Difference]: Start difference. First operand has 297 places, 325 transitions, 4636 flow. Second operand 61 states and 2788 transitions. [2020-10-09 14:47:16,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 434 transitions, 11950 flow [2020-10-09 14:47:17,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 434 transitions, 10251 flow, removed 735 selfloop flow, removed 30 redundant places. [2020-10-09 14:47:17,257 INFO L241 Difference]: Finished difference. Result has 341 places, 361 transitions, 5764 flow [2020-10-09 14:47:17,258 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3701, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5764, PETRI_PLACES=341, PETRI_TRANSITIONS=361} [2020-10-09 14:47:17,259 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 286 predicate places. [2020-10-09 14:47:17,259 INFO L481 AbstractCegarLoop]: Abstraction has has 341 places, 361 transitions, 5764 flow [2020-10-09 14:47:17,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-09 14:47:17,259 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 14:47:17,259 INFO L255 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 14:47:17,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-09 14:47:17,868 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 14:47:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 14:47:17,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1284684214, now seen corresponding path program 7 times [2020-10-09 14:47:17,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 14:47:17,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370304397] [2020-10-09 14:47:17,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-10-09 14:47:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 14:47:17,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-09 14:47:17,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 14:47:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:47:18,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 14:47:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-09 14:47:18,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370304397] [2020-10-09 14:47:18,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 14:47:18,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23, 23] imperfect sequences [] total 23 [2020-10-09 14:47:18,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922053603] [2020-10-09 14:47:18,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-09 14:47:18,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 14:47:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-09 14:47:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-10-09 14:47:18,610 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 55 [2020-10-09 14:47:18,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 361 transitions, 5764 flow. Second operand 23 states. [2020-10-09 14:47:18,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 14:47:18,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 55 [2020-10-09 14:47:18,611 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 14:47:22,580 INFO L129 PetriNetUnfolder]: 1673/9323 cut-off events. [2020-10-09 14:47:22,581 INFO L130 PetriNetUnfolder]: For 633939/633997 co-relation queries the response was YES. [2020-10-09 14:47:22,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46417 conditions, 9323 events. 1673/9323 cut-off events. For 633939/633997 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 103038 event pairs, 281 based on Foata normal form. 42/8346 useless extension candidates. Maximal degree in co-relation 46305. Up to 1240 conditions per place. [2020-10-09 14:47:22,833 INFO L132 encePairwiseOnDemand]: 49/55 looper letters, 0 selfloop transitions, 0 changer transitions 394/394 dead transitions. [2020-10-09 14:47:22,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 394 transitions, 5481 flow [2020-10-09 14:47:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-09 14:47:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-09 14:47:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1539 transitions. [2020-10-09 14:47:22,836 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8479338842975207 [2020-10-09 14:47:22,837 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1539 transitions. [2020-10-09 14:47:22,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1539 transitions. [2020-10-09 14:47:22,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 14:47:22,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1539 transitions. [2020-10-09 14:47:22,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 34 states. [2020-10-09 14:47:22,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 34 states. [2020-10-09 14:47:22,844 INFO L81 ComplementDD]: Finished complementDD. Result 34 states. [2020-10-09 14:47:22,844 INFO L185 Difference]: Start difference. First operand has 341 places, 361 transitions, 5764 flow. Second operand 33 states and 1539 transitions. [2020-10-09 14:47:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 394 transitions, 5481 flow [2020-10-09 14:47:23,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 394 transitions, 4046 flow, removed 392 selfloop flow, removed 65 redundant places. [2020-10-09 14:47:23,734 INFO L241 Difference]: Finished difference. Result has 295 places, 0 transitions, 0 flow [2020-10-09 14:47:23,735 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=0, PETRI_PLACES=295, PETRI_TRANSITIONS=0} [2020-10-09 14:47:23,735 INFO L341 CegarLoopForPetriNet]: 55 programPoint places, 240 predicate places. [2020-10-09 14:47:23,736 INFO L481 AbstractCegarLoop]: Abstraction has has 295 places, 0 transitions, 0 flow [2020-10-09 14:47:23,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-09 14:47:23,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-10-09 14:47:23,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 02:47:23 BasicIcfg [2020-10-09 14:47:23,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 14:47:23,953 INFO L168 Benchmark]: Toolchain (without parser) took 36857.25 ms. Allocated memory was 252.7 MB in the beginning and 981.5 MB in the end (delta: 728.8 MB). Free memory was 205.1 MB in the beginning and 422.2 MB in the end (delta: -217.1 MB). Peak memory consumption was 726.2 MB. Max. memory is 14.2 GB. [2020-10-09 14:47:23,954 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:47:23,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 748.24 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 205.1 MB in the beginning and 273.6 MB in the end (delta: -68.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:47:23,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 318.2 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 14:47:23,956 INFO L168 Benchmark]: Boogie Preprocessor took 34.14 ms. Allocated memory is still 318.2 MB. Free memory was 273.6 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:47:23,957 INFO L168 Benchmark]: RCFGBuilder took 454.93 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 251.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 14.2 GB. [2020-10-09 14:47:23,957 INFO L168 Benchmark]: TraceAbstraction took 35556.75 ms. Allocated memory was 318.2 MB in the beginning and 981.5 MB in the end (delta: 663.2 MB). Free memory was 249.1 MB in the beginning and 422.2 MB in the end (delta: -173.1 MB). Peak memory consumption was 704.7 MB. Max. memory is 14.2 GB. [2020-10-09 14:47:23,961 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 252.7 MB. Free memory is still 226.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 748.24 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 205.1 MB in the beginning and 273.6 MB in the end (delta: -68.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 318.2 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 34.14 ms. Allocated memory is still 318.2 MB. Free memory was 273.6 MB in the beginning and 271.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 454.93 ms. Allocated memory is still 318.2 MB. Free memory was 271.1 MB in the beginning and 251.6 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 14.2 GB. * TraceAbstraction took 35556.75 ms. Allocated memory was 318.2 MB in the beginning and 981.5 MB in the end (delta: 663.2 MB). Free memory was 249.1 MB in the beginning and 422.2 MB in the end (delta: -173.1 MB). Peak memory consumption was 704.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 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: 35.3s, OverallIterations: 10, TraceHistogramMax: 11, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 777 SDslu, 346 SDs, 0 SdLazy, 2201 SolverSat, 1046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3669 GetRequests, 3065 SyntacticMatches, 108 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9602 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5764occurred in iteration=9, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1707 NumberOfCodeBlocks, 1707 NumberOfCodeBlocksAsserted, 99 NumberOfCheckSat, 3366 ConstructedInterpolants, 0 QuantifiedInterpolants, 1117934 SizeOfPredicates, 316 NumberOfNonLiveVariables, 3542 ConjunctsInSsa, 388 ConjunctsInUnsatCore, 48 InterpolantComputations, 6 PerfectInterpolantSequences, 886/5956 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...