/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:32:29,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:32:29,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:32:29,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:32:29,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:32:29,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:32:29,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:32:29,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:32:29,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:32:29,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:32:29,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:32:29,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:32:29,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:32:29,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:32:29,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:32:29,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:32:29,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:32:29,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:32:29,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:32:30,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:32:30,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:32:30,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:32:30,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:32:30,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:32:30,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 02:32:30,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 02:32:30,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 02:32:30,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 02:32:30,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 02:32:30,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 02:32:30,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 02:32:30,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 02:32:30,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 02:32:30,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 02:32:30,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 02:32:30,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 02:32:30,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 02:32:30,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 02:32:30,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:32:30,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:32:30,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:32:30,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:32:30,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:32:30,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:32:30,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:32:30,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:32:30,026 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:32:30,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:32:30,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:32:30,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:32:30,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:32:30,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:32:30,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:32:30,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:32:30,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:32:30,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:32:30,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:32:30,271 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:32:30,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-03-11 02:32:30,319 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119bcad82/be50442c52db4b2d98c6bd1ab5a75f64/FLAG7e34adb6f [2021-03-11 02:32:30,709 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:32:30,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-03-11 02:32:30,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119bcad82/be50442c52db4b2d98c6bd1ab5a75f64/FLAG7e34adb6f [2021-03-11 02:32:31,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/119bcad82/be50442c52db4b2d98c6bd1ab5a75f64 [2021-03-11 02:32:31,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:32:31,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:32:31,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:31,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:32:31,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:32:31,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2e6fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31, skipping insertion in model container [2021-03-11 02:32:31,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:32:31,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:32:31,175 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-03-11 02:32:31,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:31,325 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:32:31,333 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-03-11 02:32:31,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:31,411 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:32:31,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31 WrapperNode [2021-03-11 02:32:31,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:31,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:31,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:32:31,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:32:31,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:31,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:32:31,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:32:31,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:32:31,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (1/1) ... [2021-03-11 02:32:31,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:32:31,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:32:31,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:32:31,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:32:31,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (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 [2021-03-11 02:32:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:32:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:32:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:32:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:32:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:32:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:32:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:32:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:32:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:32:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:32:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:32:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:32:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:32:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:32:31,570 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:32:31,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:32:31,878 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:32:31,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:31 BoogieIcfgContainer [2021-03-11 02:32:31,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:32:31,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:32:31,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:32:31,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:32:31,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:32:31" (1/3) ... [2021-03-11 02:32:31,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bfb764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:31, skipping insertion in model container [2021-03-11 02:32:31,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:31" (2/3) ... [2021-03-11 02:32:31,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bfb764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:31, skipping insertion in model container [2021-03-11 02:32:31,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:31" (3/3) ... [2021-03-11 02:32:31,884 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-03-11 02:32:31,887 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:32:31,890 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:32:31,891 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:32:31,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,921 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,921 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,925 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,927 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,927 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,927 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,929 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,930 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,930 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,931 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,931 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,931 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,932 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:31,932 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:32:31,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:32:31,957 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:32:31,957 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:32:31,957 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:32:31,957 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:32:31,957 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:32:31,958 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:32:31,958 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:32:31,958 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:32:31,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:32:31,991 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 02:32:31,991 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:31,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:32:31,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:32:31,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 02:32:32,020 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 02:32:32,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:32,020 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:32,021 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:32,021 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:32,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:32,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2097917691, now seen corresponding path program 1 times [2021-03-11 02:32:32,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:32,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518834686] [2021-03-11 02:32:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:32,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:32,229 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:32,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:32,240 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:32,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:32,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:32,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:32,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:32,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518834686] [2021-03-11 02:32:32,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:32,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:32:32,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48180663] [2021-03-11 02:32:32,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:32:32,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:32,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:32:32,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:32:32,299 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:32:32,302 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,302 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:32,302 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:32:32,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:32,610 INFO L129 PetriNetUnfolder]: 347/954 cut-off events. [2021-03-11 02:32:32,611 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:32,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 954 events. 347/954 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6666 event pairs, 74 based on Foata normal form. 33/963 useless extension candidates. Maximal degree in co-relation 1530. Up to 206 conditions per place. [2021-03-11 02:32:32,622 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 17 selfloop transitions, 6 changer transitions 37/104 dead transitions. [2021-03-11 02:32:32,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 104 transitions, 337 flow [2021-03-11 02:32:32,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:32:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:32:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 568 transitions. [2021-03-11 02:32:32,634 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8528528528528528 [2021-03-11 02:32:32,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 568 transitions. [2021-03-11 02:32:32,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 568 transitions. [2021-03-11 02:32:32,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:32,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 568 transitions. [2021-03-11 02:32:32,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,647 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,648 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 9 states and 568 transitions. [2021-03-11 02:32:32,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 104 transitions, 337 flow [2021-03-11 02:32:32,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:32:32,654 INFO L241 Difference]: Finished difference. Result has 81 places, 63 transitions, 210 flow [2021-03-11 02:32:32,656 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2021-03-11 02:32:32,656 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2021-03-11 02:32:32,656 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 210 flow [2021-03-11 02:32:32,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:32,657 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:32,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:32:32,657 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:32,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:32,657 INFO L82 PathProgramCache]: Analyzing trace with hash 178725702, now seen corresponding path program 1 times [2021-03-11 02:32:32,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:32,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877806874] [2021-03-11 02:32:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:32,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:32,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:32,733 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:32,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:32,743 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:32,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:32,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:32,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:32,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:32,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:32,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877806874] [2021-03-11 02:32:32,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:32,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:32,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836578249] [2021-03-11 02:32:32,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:32,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:32,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:32,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:32,776 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:32:32,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:32,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:32,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:32:32,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:32,971 INFO L129 PetriNetUnfolder]: 248/724 cut-off events. [2021-03-11 02:32:32,972 INFO L130 PetriNetUnfolder]: For 1339/1611 co-relation queries the response was YES. [2021-03-11 02:32:32,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 724 events. 248/724 cut-off events. For 1339/1611 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4577 event pairs, 20 based on Foata normal form. 21/729 useless extension candidates. Maximal degree in co-relation 2193. Up to 169 conditions per place. [2021-03-11 02:32:32,992 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 21 selfloop transitions, 7 changer transitions 52/124 dead transitions. [2021-03-11 02:32:32,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 124 transitions, 810 flow [2021-03-11 02:32:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 802 transitions. [2021-03-11 02:32:32,996 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8336798336798337 [2021-03-11 02:32:32,996 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 802 transitions. [2021-03-11 02:32:32,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 802 transitions. [2021-03-11 02:32:32,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:32,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 802 transitions. [2021-03-11 02:32:32,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.69230769230769) internal successors, (802), 13 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,001 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,001 INFO L185 Difference]: Start difference. First operand has 81 places, 63 transitions, 210 flow. Second operand 13 states and 802 transitions. [2021-03-11 02:32:33,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 124 transitions, 810 flow [2021-03-11 02:32:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 124 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:32:33,010 INFO L241 Difference]: Finished difference. Result has 97 places, 66 transitions, 282 flow [2021-03-11 02:32:33,010 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=282, PETRI_PLACES=97, PETRI_TRANSITIONS=66} [2021-03-11 02:32:33,010 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2021-03-11 02:32:33,010 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 66 transitions, 282 flow [2021-03-11 02:32:33,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:33,011 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:33,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:32:33,011 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:33,013 INFO L82 PathProgramCache]: Analyzing trace with hash -485344826, now seen corresponding path program 1 times [2021-03-11 02:32:33,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:33,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091581480] [2021-03-11 02:32:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:33,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:33,076 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:33,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:33,082 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:33,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:33,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:33,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091581480] [2021-03-11 02:32:33,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:33,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:33,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134609768] [2021-03-11 02:32:33,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:33,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:33,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:33,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:33,117 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:32:33,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 66 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:33,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:32:33,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:33,316 INFO L129 PetriNetUnfolder]: 163/644 cut-off events. [2021-03-11 02:32:33,317 INFO L130 PetriNetUnfolder]: For 2132/2467 co-relation queries the response was YES. [2021-03-11 02:32:33,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 644 events. 163/644 cut-off events. For 2132/2467 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4448 event pairs, 5 based on Foata normal form. 21/656 useless extension candidates. Maximal degree in co-relation 2032. Up to 109 conditions per place. [2021-03-11 02:32:33,323 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 22 selfloop transitions, 15 changer transitions 52/133 dead transitions. [2021-03-11 02:32:33,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 1062 flow [2021-03-11 02:32:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 802 transitions. [2021-03-11 02:32:33,327 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8336798336798337 [2021-03-11 02:32:33,327 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 802 transitions. [2021-03-11 02:32:33,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 802 transitions. [2021-03-11 02:32:33,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:33,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 802 transitions. [2021-03-11 02:32:33,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.69230769230769) internal successors, (802), 13 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,331 INFO L185 Difference]: Start difference. First operand has 97 places, 66 transitions, 282 flow. Second operand 13 states and 802 transitions. [2021-03-11 02:32:33,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 1062 flow [2021-03-11 02:32:33,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 133 transitions, 985 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-03-11 02:32:33,338 INFO L241 Difference]: Finished difference. Result has 108 places, 75 transitions, 458 flow [2021-03-11 02:32:33,338 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=458, PETRI_PLACES=108, PETRI_TRANSITIONS=75} [2021-03-11 02:32:33,339 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2021-03-11 02:32:33,339 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 75 transitions, 458 flow [2021-03-11 02:32:33,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:33,339 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:33,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:32:33,339 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash 697548743, now seen corresponding path program 1 times [2021-03-11 02:32:33,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:33,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229416799] [2021-03-11 02:32:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:33,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:33,402 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:33,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:33,410 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:33,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:33,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229416799] [2021-03-11 02:32:33,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:33,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:33,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862844359] [2021-03-11 02:32:33,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:33,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:33,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:33,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:33,449 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:32:33,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 75 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:33,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:32:33,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:33,621 INFO L129 PetriNetUnfolder]: 89/368 cut-off events. [2021-03-11 02:32:33,621 INFO L130 PetriNetUnfolder]: For 2218/2606 co-relation queries the response was YES. [2021-03-11 02:32:33,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1507 conditions, 368 events. 89/368 cut-off events. For 2218/2606 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1975 event pairs, 6 based on Foata normal form. 22/384 useless extension candidates. Maximal degree in co-relation 1446. Up to 76 conditions per place. [2021-03-11 02:32:33,624 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 22 selfloop transitions, 18 changer transitions 31/115 dead transitions. [2021-03-11 02:32:33,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 115 transitions, 1047 flow [2021-03-11 02:32:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 789 transitions. [2021-03-11 02:32:33,626 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8201663201663202 [2021-03-11 02:32:33,626 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 789 transitions. [2021-03-11 02:32:33,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 789 transitions. [2021-03-11 02:32:33,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:33,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 789 transitions. [2021-03-11 02:32:33,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.69230769230769) internal successors, (789), 13 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,630 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,630 INFO L185 Difference]: Start difference. First operand has 108 places, 75 transitions, 458 flow. Second operand 13 states and 789 transitions. [2021-03-11 02:32:33,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 115 transitions, 1047 flow [2021-03-11 02:32:33,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 115 transitions, 963 flow, removed 42 selfloop flow, removed 6 redundant places. [2021-03-11 02:32:33,639 INFO L241 Difference]: Finished difference. Result has 115 places, 78 transitions, 517 flow [2021-03-11 02:32:33,639 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=115, PETRI_TRANSITIONS=78} [2021-03-11 02:32:33,639 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 47 predicate places. [2021-03-11 02:32:33,639 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 78 transitions, 517 flow [2021-03-11 02:32:33,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:33,640 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:33,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:32:33,640 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:33,642 INFO L82 PathProgramCache]: Analyzing trace with hash -311271731, now seen corresponding path program 1 times [2021-03-11 02:32:33,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:33,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869801836] [2021-03-11 02:32:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:33,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:33,709 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:33,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:33,716 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:33,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:33,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:33,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:33,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:33,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869801836] [2021-03-11 02:32:33,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:33,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:33,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737098287] [2021-03-11 02:32:33,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:33,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:33,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:33,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:33,752 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:32:33,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 78 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:33,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:33,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:32:33,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:34,032 INFO L129 PetriNetUnfolder]: 223/654 cut-off events. [2021-03-11 02:32:34,032 INFO L130 PetriNetUnfolder]: For 5122/5898 co-relation queries the response was YES. [2021-03-11 02:32:34,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 654 events. 223/654 cut-off events. For 5122/5898 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3861 event pairs, 0 based on Foata normal form. 27/673 useless extension candidates. Maximal degree in co-relation 2831. Up to 147 conditions per place. [2021-03-11 02:32:34,038 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 40 selfloop transitions, 29 changer transitions 59/170 dead transitions. [2021-03-11 02:32:34,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 170 transitions, 1897 flow [2021-03-11 02:32:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:32:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:32:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1006 transitions. [2021-03-11 02:32:34,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7996820349761526 [2021-03-11 02:32:34,043 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1006 transitions. [2021-03-11 02:32:34,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1006 transitions. [2021-03-11 02:32:34,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:34,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1006 transitions. [2021-03-11 02:32:34,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.1764705882353) internal successors, (1006), 17 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,050 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,050 INFO L185 Difference]: Start difference. First operand has 115 places, 78 transitions, 517 flow. Second operand 17 states and 1006 transitions. [2021-03-11 02:32:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 170 transitions, 1897 flow [2021-03-11 02:32:34,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 170 transitions, 1682 flow, removed 82 selfloop flow, removed 16 redundant places. [2021-03-11 02:32:34,061 INFO L241 Difference]: Finished difference. Result has 122 places, 93 transitions, 803 flow [2021-03-11 02:32:34,061 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=803, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2021-03-11 02:32:34,061 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 54 predicate places. [2021-03-11 02:32:34,061 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 803 flow [2021-03-11 02:32:34,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.857142857142854) internal successors, (391), 7 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,062 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:34,062 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:34,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:32:34,062 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1481120785, now seen corresponding path program 1 times [2021-03-11 02:32:34,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:34,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264129923] [2021-03-11 02:32:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:34,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,129 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:32:34,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:32:34,137 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:34,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:34,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:34,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:34,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:34,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264129923] [2021-03-11 02:32:34,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:34,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:34,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726974695] [2021-03-11 02:32:34,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:34,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:34,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:34,172 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:32:34,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:34,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:32:34,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:34,326 INFO L129 PetriNetUnfolder]: 148/491 cut-off events. [2021-03-11 02:32:34,326 INFO L130 PetriNetUnfolder]: For 5371/6451 co-relation queries the response was YES. [2021-03-11 02:32:34,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 491 events. 148/491 cut-off events. For 5371/6451 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2679 event pairs, 0 based on Foata normal form. 24/508 useless extension candidates. Maximal degree in co-relation 2377. Up to 116 conditions per place. [2021-03-11 02:32:34,329 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 24 selfloop transitions, 10 changer transitions 77/153 dead transitions. [2021-03-11 02:32:34,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 153 transitions, 1840 flow [2021-03-11 02:32:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:32:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:32:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 655 transitions. [2021-03-11 02:32:34,331 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8046683046683046 [2021-03-11 02:32:34,332 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 655 transitions. [2021-03-11 02:32:34,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 655 transitions. [2021-03-11 02:32:34,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:34,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 655 transitions. [2021-03-11 02:32:34,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.54545454545455) internal successors, (655), 11 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,334 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,334 INFO L185 Difference]: Start difference. First operand has 122 places, 93 transitions, 803 flow. Second operand 11 states and 655 transitions. [2021-03-11 02:32:34,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 153 transitions, 1840 flow [2021-03-11 02:32:34,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 153 transitions, 1728 flow, removed 56 selfloop flow, removed 13 redundant places. [2021-03-11 02:32:34,346 INFO L241 Difference]: Finished difference. Result has 115 places, 70 transitions, 465 flow [2021-03-11 02:32:34,346 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=465, PETRI_PLACES=115, PETRI_TRANSITIONS=70} [2021-03-11 02:32:34,346 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 47 predicate places. [2021-03-11 02:32:34,346 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 70 transitions, 465 flow [2021-03-11 02:32:34,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,346 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:34,347 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:34,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:32:34,347 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:34,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:34,347 INFO L82 PathProgramCache]: Analyzing trace with hash -223841836, now seen corresponding path program 1 times [2021-03-11 02:32:34,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:34,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219074] [2021-03-11 02:32:34,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:34,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,393 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:34,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:34,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:34,412 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:34,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:34,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:34,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219074] [2021-03-11 02:32:34,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:34,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:32:34,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137022447] [2021-03-11 02:32:34,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:32:34,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:34,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:32:34,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:32:34,422 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:32:34,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 70 transitions, 465 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:34,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:32:34,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:34,538 INFO L129 PetriNetUnfolder]: 249/704 cut-off events. [2021-03-11 02:32:34,538 INFO L130 PetriNetUnfolder]: For 1191/1254 co-relation queries the response was YES. [2021-03-11 02:32:34,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 704 events. 249/704 cut-off events. For 1191/1254 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4903 event pairs, 26 based on Foata normal form. 12/642 useless extension candidates. Maximal degree in co-relation 1597. Up to 190 conditions per place. [2021-03-11 02:32:34,543 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 24 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2021-03-11 02:32:34,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 100 transitions, 607 flow [2021-03-11 02:32:34,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:32:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:32:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 643 transitions. [2021-03-11 02:32:34,545 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8689189189189189 [2021-03-11 02:32:34,545 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 643 transitions. [2021-03-11 02:32:34,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 643 transitions. [2021-03-11 02:32:34,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:34,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 643 transitions. [2021-03-11 02:32:34,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.3) internal successors, (643), 10 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,547 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,547 INFO L185 Difference]: Start difference. First operand has 115 places, 70 transitions, 465 flow. Second operand 10 states and 643 transitions. [2021-03-11 02:32:34,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 100 transitions, 607 flow [2021-03-11 02:32:34,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 470 flow, removed 29 selfloop flow, removed 20 redundant places. [2021-03-11 02:32:34,551 INFO L241 Difference]: Finished difference. Result has 104 places, 85 transitions, 448 flow [2021-03-11 02:32:34,551 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=448, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2021-03-11 02:32:34,551 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 36 predicate places. [2021-03-11 02:32:34,551 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 448 flow [2021-03-11 02:32:34,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:34,552 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:34,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:32:34,552 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:34,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:34,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1040002753, now seen corresponding path program 1 times [2021-03-11 02:32:34,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:34,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59206979] [2021-03-11 02:32:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:34,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,596 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:34,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:34,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:34,615 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:34,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:34,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:34,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59206979] [2021-03-11 02:32:34,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:34,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:34,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95287289] [2021-03-11 02:32:34,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:34,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:34,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:34,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:34,624 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:32:34,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:34,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:32:34,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:34,790 INFO L129 PetriNetUnfolder]: 229/690 cut-off events. [2021-03-11 02:32:34,790 INFO L130 PetriNetUnfolder]: For 1503/1894 co-relation queries the response was YES. [2021-03-11 02:32:34,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 690 events. 229/690 cut-off events. For 1503/1894 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5101 event pairs, 0 based on Foata normal form. 87/721 useless extension candidates. Maximal degree in co-relation 2275. Up to 236 conditions per place. [2021-03-11 02:32:34,795 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 16 selfloop transitions, 32 changer transitions 13/120 dead transitions. [2021-03-11 02:32:34,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 794 flow [2021-03-11 02:32:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 837 transitions. [2021-03-11 02:32:34,797 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8700623700623701 [2021-03-11 02:32:34,797 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 837 transitions. [2021-03-11 02:32:34,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 837 transitions. [2021-03-11 02:32:34,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:34,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 837 transitions. [2021-03-11 02:32:34,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.38461538461539) internal successors, (837), 13 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,800 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,801 INFO L185 Difference]: Start difference. First operand has 104 places, 85 transitions, 448 flow. Second operand 13 states and 837 transitions. [2021-03-11 02:32:34,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 794 flow [2021-03-11 02:32:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 120 transitions, 768 flow, removed 10 selfloop flow, removed 5 redundant places. [2021-03-11 02:32:34,805 INFO L241 Difference]: Finished difference. Result has 115 places, 101 transitions, 625 flow [2021-03-11 02:32:34,805 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=625, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2021-03-11 02:32:34,805 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 47 predicate places. [2021-03-11 02:32:34,805 INFO L480 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 625 flow [2021-03-11 02:32:34,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,805 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:34,806 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:34,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:32:34,806 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:34,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:34,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2094075664, now seen corresponding path program 1 times [2021-03-11 02:32:34,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:34,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796791224] [2021-03-11 02:32:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:34,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:34,853 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:34,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:34,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:34,871 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:34,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:34,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:34,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:34,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796791224] [2021-03-11 02:32:34,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:34,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:34,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219317312] [2021-03-11 02:32:34,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:34,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:34,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:34,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:34,888 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:32:34,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 625 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:34,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:34,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:32:34,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:35,082 INFO L129 PetriNetUnfolder]: 187/612 cut-off events. [2021-03-11 02:32:35,083 INFO L130 PetriNetUnfolder]: For 2396/3167 co-relation queries the response was YES. [2021-03-11 02:32:35,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 612 events. 187/612 cut-off events. For 2396/3167 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4631 event pairs, 0 based on Foata normal form. 86/642 useless extension candidates. Maximal degree in co-relation 2374. Up to 184 conditions per place. [2021-03-11 02:32:35,086 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2021-03-11 02:32:35,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 107 transitions, 786 flow [2021-03-11 02:32:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:32:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:32:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 947 transitions. [2021-03-11 02:32:35,088 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8531531531531531 [2021-03-11 02:32:35,088 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 947 transitions. [2021-03-11 02:32:35,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 947 transitions. [2021-03-11 02:32:35,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:35,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 947 transitions. [2021-03-11 02:32:35,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.13333333333333) internal successors, (947), 15 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:35,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:35,092 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:35,092 INFO L185 Difference]: Start difference. First operand has 115 places, 101 transitions, 625 flow. Second operand 15 states and 947 transitions. [2021-03-11 02:32:35,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 107 transitions, 786 flow [2021-03-11 02:32:35,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 625 flow, removed 55 selfloop flow, removed 14 redundant places. [2021-03-11 02:32:35,099 INFO L241 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-03-11 02:32:35,099 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-03-11 02:32:35,099 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2021-03-11 02:32:35,099 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-03-11 02:32:35,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:35,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:32:35,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:32:35 BasicIcfg [2021-03-11 02:32:35,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:32:35,103 INFO L168 Benchmark]: Toolchain (without parser) took 4045.35 ms. Allocated memory was 255.9 MB in the beginning and 465.6 MB in the end (delta: 209.7 MB). Free memory was 235.5 MB in the beginning and 373.5 MB in the end (delta: -138.0 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,103 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 24.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:35,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.56 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 234.9 MB in the beginning and 352.1 MB in the end (delta: -117.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.93 ms. Allocated memory is still 388.0 MB. Free memory was 352.1 MB in the beginning and 350.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,104 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 388.0 MB. Free memory was 350.7 MB in the beginning and 349.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,104 INFO L168 Benchmark]: RCFGBuilder took 385.37 ms. Allocated memory is still 388.0 MB. Free memory was 349.3 MB in the beginning and 327.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,105 INFO L168 Benchmark]: TraceAbstraction took 3222.68 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 326.9 MB in the beginning and 373.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:35,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 255.9 MB. Free memory was 238.2 MB in the beginning and 238.2 MB in the end (delta: 24.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 352.56 ms. Allocated memory was 255.9 MB in the beginning and 388.0 MB in the end (delta: 132.1 MB). Free memory was 234.9 MB in the beginning and 352.1 MB in the end (delta: -117.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.93 ms. Allocated memory is still 388.0 MB. Free memory was 352.1 MB in the beginning and 350.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 388.0 MB. Free memory was 350.7 MB in the beginning and 349.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 385.37 ms. Allocated memory is still 388.0 MB. Free memory was 349.3 MB in the beginning and 327.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3222.68 ms. Allocated memory was 388.0 MB in the beginning and 465.6 MB in the end (delta: 77.6 MB). Free memory was 326.9 MB in the beginning and 373.5 MB in the end (delta: -46.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 24.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3145.4ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2019.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 184 SDtfs, 424 SDslu, 578 SDs, 0 SdLazy, 417 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 255.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1062.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=803occurred in iteration=5, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.3ms SsaConstructionTime, 141.6ms SatisfiabilityAnalysisTime, 755.7ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...