/usr/bin/java -Xmx8000000000 -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/safe035_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:36:43,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:36:43,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:36:43,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:36:43,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:36:43,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:36:43,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:36:43,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:36:43,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:36:43,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:36:43,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:36:43,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:36:43,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:36:43,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:36:43,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:36:43,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:36:43,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:36:43,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:36:43,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:36:43,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:36:43,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:36:43,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:36:43,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:36:43,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:36:43,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 07:36:43,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 07:36:43,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 07:36:43,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 07:36:43,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 07:36:43,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 07:36:43,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:36:43,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:36:43,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:36:43,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:36:43,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:36:43,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:36:43,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:36:43,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:36:43,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:36:43,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:36:43,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:36:43,415 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 [2021-06-13 07:36:43,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:36:43,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:36:43,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:36:43,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:36:43,433 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:36:43,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:36:43,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:36:43,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:36:43,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:36:43,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:36:43,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:36:43,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:36:43,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:36:43,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:36:43,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:36:43,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:36:43,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:36:43,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:36:43,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:36:43,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:36:43,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:36:43,737 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:36:43,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-06-13 07:36:43,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3d19a3da/55c8d75bb61c4873a9fb1daf14d4ed8d/FLAGdf25313a7 [2021-06-13 07:36:44,209 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:36:44,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i [2021-06-13 07:36:44,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3d19a3da/55c8d75bb61c4873a9fb1daf14d4ed8d/FLAGdf25313a7 [2021-06-13 07:36:44,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3d19a3da/55c8d75bb61c4873a9fb1daf14d4ed8d [2021-06-13 07:36:44,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:36:44,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:36:44,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:44,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:36:44,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:36:44,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dbe7a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44, skipping insertion in model container [2021-06-13 07:36:44,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:36:44,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:36:44,701 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i[949,962] [2021-06-13 07:36:44,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:44,856 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:36:44,864 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_rmo.opt.i[949,962] [2021-06-13 07:36:44,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:44,940 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:36:44,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44 WrapperNode [2021-06-13 07:36:44,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:44,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:44,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:36:44,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:36:44,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:44,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:36:44,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:36:44,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:36:44,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (1/1) ... [2021-06-13 07:36:44,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:36:44,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:36:44,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:36:44,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:36:44,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (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 [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:36:45,029 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:36:45,029 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:36:45,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:36:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:36:45,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:36:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:36:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:36:45,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:36:45,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:36:45,031 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:36:45,385 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:36:45,385 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:36:45,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:45 BoogieIcfgContainer [2021-06-13 07:36:45,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:36:45,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:36:45,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:36:45,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:36:45,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:36:44" (1/3) ... [2021-06-13 07:36:45,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c23c224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:45, skipping insertion in model container [2021-06-13 07:36:45,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:44" (2/3) ... [2021-06-13 07:36:45,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c23c224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:45, skipping insertion in model container [2021-06-13 07:36:45,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:45" (3/3) ... [2021-06-13 07:36:45,394 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_rmo.opt.i [2021-06-13 07:36:45,399 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:36:45,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:36:45,400 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:36:45,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,429 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,430 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,430 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,432 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,433 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,434 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,434 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,441 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,442 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,442 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,446 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,446 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,446 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,447 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,448 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,448 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,449 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:45,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:36:45,482 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:36:45,506 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:36:45,506 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:36:45,506 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:36:45,506 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:36:45,506 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:36:45,507 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:36:45,507 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:36:45,507 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:36:45,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:36:45,557 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-13 07:36:45,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:45,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:36:45,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-06-13 07:36:45,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-06-13 07:36:45,590 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-13 07:36:45,590 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:45,590 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:45,591 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] [2021-06-13 07:36:45,591 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1593178653, now seen corresponding path program 1 times [2021-06-13 07:36:45,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:45,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920986550] [2021-06-13 07:36:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:45,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:45,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:45,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:45,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:45,856 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:45,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:45,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:45,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:45,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:45,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:45,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:45,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:45,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:45,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920986550] [2021-06-13 07:36:45,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920986550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:45,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:45,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:36:45,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867579872] [2021-06-13 07:36:45,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:36:45,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:36:45,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:36:45,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-06-13 07:36:45,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:36:45,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:45,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-06-13 07:36:45,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:46,118 INFO L129 PetriNetUnfolder]: 3/82 cut-off events. [2021-06-13 07:36:46,118 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:46,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 82 events. 3/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 4/85 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-06-13 07:36:46,120 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 6 selfloop transitions, 2 changer transitions 11/78 dead transitions. [2021-06-13 07:36:46,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 78 transitions, 201 flow [2021-06-13 07:36:46,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:36:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:36:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 670 transitions. [2021-06-13 07:36:46,130 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862433862433863 [2021-06-13 07:36:46,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 670 transitions. [2021-06-13 07:36:46,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 670 transitions. [2021-06-13 07:36:46,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:46,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 670 transitions. [2021-06-13 07:36:46,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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) [2021-06-13 07:36:46,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,142 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,144 INFO L185 Difference]: Start difference. First operand has 78 places, 69 transitions, 147 flow. Second operand 9 states and 670 transitions. [2021-06-13 07:36:46,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 78 transitions, 201 flow [2021-06-13 07:36:46,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:36:46,149 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 160 flow [2021-06-13 07:36:46,150 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-06-13 07:36:46,150 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-06-13 07:36:46,150 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 160 flow [2021-06-13 07:36:46,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-13 07:36:46,151 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:46,151 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, 1, 1, 1] [2021-06-13 07:36:46,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:36:46,151 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1261263538, now seen corresponding path program 1 times [2021-06-13 07:36:46,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:46,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576206100] [2021-06-13 07:36:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:46,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:46,199 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:46,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:46,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:46,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:46,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:46,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:46,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576206100] [2021-06-13 07:36:46,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576206100] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:46,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:46,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:36:46,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56609226] [2021-06-13 07:36:46,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:36:46,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:46,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:36:46,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:36:46,256 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 84 [2021-06-13 07:36:46,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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) [2021-06-13 07:36:46,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:46,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 84 [2021-06-13 07:36:46,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:46,445 INFO L129 PetriNetUnfolder]: 32/194 cut-off events. [2021-06-13 07:36:46,445 INFO L130 PetriNetUnfolder]: For 42/80 co-relation queries the response was YES. [2021-06-13 07:36:46,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 194 events. 32/194 cut-off events. For 42/80 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 744 event pairs, 8 based on Foata normal form. 6/194 useless extension candidates. Maximal degree in co-relation 326. Up to 30 conditions per place. [2021-06-13 07:36:46,447 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 11 selfloop transitions, 2 changer transitions 17/86 dead transitions. [2021-06-13 07:36:46,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 279 flow [2021-06-13 07:36:46,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:36:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:36:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 653 transitions. [2021-06-13 07:36:46,449 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8637566137566137 [2021-06-13 07:36:46,449 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 653 transitions. [2021-06-13 07:36:46,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 653 transitions. [2021-06-13 07:36:46,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:46,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 653 transitions. [2021-06-13 07:36:46,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 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) [2021-06-13 07:36:46,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,452 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 160 flow. Second operand 9 states and 653 transitions. [2021-06-13 07:36:46,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 279 flow [2021-06-13 07:36:46,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 86 transitions, 245 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:36:46,455 INFO L241 Difference]: Finished difference. Result has 90 places, 67 transitions, 164 flow [2021-06-13 07:36:46,455 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2021-06-13 07:36:46,455 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-06-13 07:36:46,455 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 164 flow [2021-06-13 07:36:46,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.5) internal successors, (423), 6 states have internal predecessors, (423), 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) [2021-06-13 07:36:46,456 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:46,456 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, 1, 1, 1, 1, 1] [2021-06-13 07:36:46,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:36:46,456 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:46,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1279780845, now seen corresponding path program 1 times [2021-06-13 07:36:46,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:46,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694627601] [2021-06-13 07:36:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:46,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:46,533 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:36:46,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:36:46,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:36:46,572 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:36:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:46,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:46,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:46,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694627601] [2021-06-13 07:36:46,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694627601] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:46,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:46,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:36:46,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868875182] [2021-06-13 07:36:46,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:36:46,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:36:46,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:36:46,587 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:36:46,588 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-06-13 07:36:46,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:46,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:36:46,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:46,747 INFO L129 PetriNetUnfolder]: 91/286 cut-off events. [2021-06-13 07:36:46,747 INFO L130 PetriNetUnfolder]: For 29/30 co-relation queries the response was YES. [2021-06-13 07:36:46,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 286 events. 91/286 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1301 event pairs, 2 based on Foata normal form. 8/292 useless extension candidates. Maximal degree in co-relation 493. Up to 81 conditions per place. [2021-06-13 07:36:46,749 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 6 changer transitions 19/92 dead transitions. [2021-06-13 07:36:46,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 284 flow [2021-06-13 07:36:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:36:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:36:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2021-06-13 07:36:46,751 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8822751322751323 [2021-06-13 07:36:46,751 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2021-06-13 07:36:46,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2021-06-13 07:36:46,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:46,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2021-06-13 07:36:46,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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) [2021-06-13 07:36:46,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,754 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2021-06-13 07:36:46,754 INFO L185 Difference]: Start difference. First operand has 90 places, 67 transitions, 164 flow. Second operand 9 states and 667 transitions. [2021-06-13 07:36:46,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 284 flow [2021-06-13 07:36:46,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 270 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-06-13 07:36:46,756 INFO L241 Difference]: Finished difference. Result has 91 places, 70 transitions, 206 flow [2021-06-13 07:36:46,757 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=91, PETRI_TRANSITIONS=70} [2021-06-13 07:36:46,757 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2021-06-13 07:36:46,757 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 70 transitions, 206 flow [2021-06-13 07:36:46,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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) [2021-06-13 07:36:46,757 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:46,757 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, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:46,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:36:46,757 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:46,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1583004122, now seen corresponding path program 1 times [2021-06-13 07:36:46,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:46,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399363000] [2021-06-13 07:36:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:46,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:46,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:46,794 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:46,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:46,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:46,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:46,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:46,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:46,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:46,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399363000] [2021-06-13 07:36:46,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399363000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:46,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:46,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:46,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241119608] [2021-06-13 07:36:46,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:46,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:46,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:46,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:46,824 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-06-13 07:36:46,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 70 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2021-06-13 07:36:46,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:46,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-06-13 07:36:46,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:46,924 INFO L129 PetriNetUnfolder]: 110/426 cut-off events. [2021-06-13 07:36:46,924 INFO L130 PetriNetUnfolder]: For 364/386 co-relation queries the response was YES. [2021-06-13 07:36:46,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 426 events. 110/426 cut-off events. For 364/386 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2442 event pairs, 40 based on Foata normal form. 17/431 useless extension candidates. Maximal degree in co-relation 1015. Up to 119 conditions per place. [2021-06-13 07:36:46,939 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 12 selfloop transitions, 1 changer transitions 9/80 dead transitions. [2021-06-13 07:36:46,939 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 275 flow [2021-06-13 07:36:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:36:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:36:46,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 499 transitions. [2021-06-13 07:36:46,941 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8486394557823129 [2021-06-13 07:36:46,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 499 transitions. [2021-06-13 07:36:46,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 499 transitions. [2021-06-13 07:36:46,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:46,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 499 transitions. [2021-06-13 07:36:46,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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) [2021-06-13 07:36:46,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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) [2021-06-13 07:36:46,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 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) [2021-06-13 07:36:46,946 INFO L185 Difference]: Start difference. First operand has 91 places, 70 transitions, 206 flow. Second operand 7 states and 499 transitions. [2021-06-13 07:36:46,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 275 flow [2021-06-13 07:36:46,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 261 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-06-13 07:36:46,952 INFO L241 Difference]: Finished difference. Result has 93 places, 70 transitions, 205 flow [2021-06-13 07:36:46,952 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2021-06-13 07:36:46,952 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2021-06-13 07:36:46,952 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 205 flow [2021-06-13 07:36:46,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2021-06-13 07:36:46,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:46,953 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, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:46,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:36:46,953 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1813538722, now seen corresponding path program 2 times [2021-06-13 07:36:46,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:46,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485337074] [2021-06-13 07:36:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:47,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,009 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:36:47,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:36:47,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:36:47,028 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:36:47,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:47,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:47,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485337074] [2021-06-13 07:36:47,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485337074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:47,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:47,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:47,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720629321] [2021-06-13 07:36:47,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:47,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:47,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:47,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:47,038 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:36:47,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-06-13 07:36:47,039 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:47,039 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:36:47,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:47,146 INFO L129 PetriNetUnfolder]: 60/231 cut-off events. [2021-06-13 07:36:47,147 INFO L130 PetriNetUnfolder]: For 317/328 co-relation queries the response was YES. [2021-06-13 07:36:47,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 231 events. 60/231 cut-off events. For 317/328 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 922 event pairs, 0 based on Foata normal form. 16/242 useless extension candidates. Maximal degree in co-relation 640. Up to 89 conditions per place. [2021-06-13 07:36:47,148 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 10 selfloop transitions, 9 changer transitions 19/95 dead transitions. [2021-06-13 07:36:47,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 448 flow [2021-06-13 07:36:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:36:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:36:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 740 transitions. [2021-06-13 07:36:47,150 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-06-13 07:36:47,150 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 740 transitions. [2021-06-13 07:36:47,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 740 transitions. [2021-06-13 07:36:47,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:47,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 740 transitions. [2021-06-13 07:36:47,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 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) [2021-06-13 07:36:47,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-06-13 07:36:47,152 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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) [2021-06-13 07:36:47,152 INFO L185 Difference]: Start difference. First operand has 93 places, 70 transitions, 205 flow. Second operand 10 states and 740 transitions. [2021-06-13 07:36:47,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 448 flow [2021-06-13 07:36:47,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 439 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-13 07:36:47,155 INFO L241 Difference]: Finished difference. Result has 99 places, 73 transitions, 278 flow [2021-06-13 07:36:47,155 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=73} [2021-06-13 07:36:47,155 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 21 predicate places. [2021-06-13 07:36:47,155 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 73 transitions, 278 flow [2021-06-13 07:36:47,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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) [2021-06-13 07:36:47,155 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:47,155 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:47,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:36:47,155 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash -624128417, now seen corresponding path program 1 times [2021-06-13 07:36:47,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:47,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881311605] [2021-06-13 07:36:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:47,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,196 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:36:47,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:36:47,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:36:47,218 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:36:47,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:47,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:47,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881311605] [2021-06-13 07:36:47,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881311605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:47,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:47,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:36:47,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506853079] [2021-06-13 07:36:47,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:36:47,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:47,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:36:47,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:36:47,232 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-06-13 07:36:47,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 73 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-06-13 07:36:47,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:47,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-06-13 07:36:47,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:47,361 INFO L129 PetriNetUnfolder]: 17/126 cut-off events. [2021-06-13 07:36:47,361 INFO L130 PetriNetUnfolder]: For 389/409 co-relation queries the response was YES. [2021-06-13 07:36:47,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 126 events. 17/126 cut-off events. For 389/409 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 294 event pairs, 0 based on Foata normal form. 17/142 useless extension candidates. Maximal degree in co-relation 375. Up to 34 conditions per place. [2021-06-13 07:36:47,362 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 4 selfloop transitions, 12 changer transitions 13/86 dead transitions. [2021-06-13 07:36:47,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 462 flow [2021-06-13 07:36:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:36:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:36:47,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2021-06-13 07:36:47,364 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8668831168831169 [2021-06-13 07:36:47,364 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2021-06-13 07:36:47,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2021-06-13 07:36:47,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:47,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2021-06-13 07:36:47,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 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) [2021-06-13 07:36:47,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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) [2021-06-13 07:36:47,366 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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) [2021-06-13 07:36:47,366 INFO L185 Difference]: Start difference. First operand has 99 places, 73 transitions, 278 flow. Second operand 11 states and 801 transitions. [2021-06-13 07:36:47,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 462 flow [2021-06-13 07:36:47,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 86 transitions, 359 flow, removed 40 selfloop flow, removed 11 redundant places. [2021-06-13 07:36:47,369 INFO L241 Difference]: Finished difference. Result has 100 places, 73 transitions, 260 flow [2021-06-13 07:36:47,369 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=260, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2021-06-13 07:36:47,369 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2021-06-13 07:36:47,369 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 260 flow [2021-06-13 07:36:47,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2021-06-13 07:36:47,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:47,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:47,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:36:47,370 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash 356628291, now seen corresponding path program 1 times [2021-06-13 07:36:47,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:47,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492450812] [2021-06-13 07:36:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:47,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,403 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:36:47,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:36:47,413 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:47,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:47,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:47,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:47,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492450812] [2021-06-13 07:36:47,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492450812] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:47,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:47,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:36:47,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727969659] [2021-06-13 07:36:47,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:36:47,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:47,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:36:47,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:36:47,461 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-06-13 07:36:47,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2021-06-13 07:36:47,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:47,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-06-13 07:36:47,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:47,551 INFO L129 PetriNetUnfolder]: 17/165 cut-off events. [2021-06-13 07:36:47,551 INFO L130 PetriNetUnfolder]: For 180/190 co-relation queries the response was YES. [2021-06-13 07:36:47,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 165 events. 17/165 cut-off events. For 180/190 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 576 event pairs, 2 based on Foata normal form. 1/163 useless extension candidates. Maximal degree in co-relation 340. Up to 27 conditions per place. [2021-06-13 07:36:47,552 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 13 selfloop transitions, 2 changer transitions 6/79 dead transitions. [2021-06-13 07:36:47,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 79 transitions, 314 flow [2021-06-13 07:36:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:36:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:36:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2021-06-13 07:36:47,554 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8065476190476191 [2021-06-13 07:36:47,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 542 transitions. [2021-06-13 07:36:47,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 542 transitions. [2021-06-13 07:36:47,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:47,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 542 transitions. [2021-06-13 07:36:47,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 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) [2021-06-13 07:36:47,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-06-13 07:36:47,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-06-13 07:36:47,556 INFO L185 Difference]: Start difference. First operand has 100 places, 73 transitions, 260 flow. Second operand 8 states and 542 transitions. [2021-06-13 07:36:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 79 transitions, 314 flow [2021-06-13 07:36:47,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 79 transitions, 232 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-13 07:36:47,558 INFO L241 Difference]: Finished difference. Result has 93 places, 73 transitions, 193 flow [2021-06-13 07:36:47,558 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2021-06-13 07:36:47,559 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 15 predicate places. [2021-06-13 07:36:47,559 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 193 flow [2021-06-13 07:36:47,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.875) internal successors, (535), 8 states have internal predecessors, (535), 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) [2021-06-13 07:36:47,559 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:47,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:47,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:36:47,559 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:47,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:47,559 INFO L82 PathProgramCache]: Analyzing trace with hash -575498487, now seen corresponding path program 2 times [2021-06-13 07:36:47,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:47,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017749168] [2021-06-13 07:36:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:36:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:36:47,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:36:47,590 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:36:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:36:47,597 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:36:47,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:36:47,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:36:47,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:36:47,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:36:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:36:47,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:36:47,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017749168] [2021-06-13 07:36:47,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017749168] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:36:47,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:36:47,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:36:47,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837114643] [2021-06-13 07:36:47,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:36:47,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:36:47,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:36:47,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:36:47,626 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-06-13 07:36:47,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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) [2021-06-13 07:36:47,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:36:47,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-06-13 07:36:47,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:36:47,710 INFO L129 PetriNetUnfolder]: 14/140 cut-off events. [2021-06-13 07:36:47,710 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-06-13 07:36:47,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 140 events. 14/140 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 445 event pairs, 2 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 236. Up to 14 conditions per place. [2021-06-13 07:36:47,711 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2021-06-13 07:36:47,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 76 transitions, 248 flow [2021-06-13 07:36:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:36:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:36:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 526 transitions. [2021-06-13 07:36:47,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7827380952380952 [2021-06-13 07:36:47,712 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 526 transitions. [2021-06-13 07:36:47,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 526 transitions. [2021-06-13 07:36:47,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:36:47,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 526 transitions. [2021-06-13 07:36:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.75) internal successors, (526), 8 states have internal predecessors, (526), 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) [2021-06-13 07:36:47,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-06-13 07:36:47,714 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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) [2021-06-13 07:36:47,714 INFO L185 Difference]: Start difference. First operand has 93 places, 73 transitions, 193 flow. Second operand 8 states and 526 transitions. [2021-06-13 07:36:47,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 76 transitions, 248 flow [2021-06-13 07:36:47,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 76 transitions, 238 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-06-13 07:36:47,715 INFO L241 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2021-06-13 07:36:47,716 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2021-06-13 07:36:47,716 INFO L335 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2021-06-13 07:36:47,716 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2021-06-13 07:36:47,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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) [2021-06-13 07:36:47,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:36:47,718 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:36:47,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:36:47 BasicIcfg [2021-06-13 07:36:47,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:36:47,720 INFO L168 Benchmark]: Toolchain (without parser) took 3143.79 ms. Allocated memory was 177.2 MB in the beginning and 235.9 MB in the end (delta: 58.7 MB). Free memory was 141.1 MB in the beginning and 143.4 MB in the end (delta: -2.3 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,720 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 177.2 MB. Free memory was 159.4 MB in the beginning and 159.3 MB in the end (delta: 106.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:36:47,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.43 ms. Allocated memory is still 177.2 MB. Free memory was 141.0 MB in the beginning and 139.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 177.2 MB. Free memory was 139.0 MB in the beginning and 137.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,721 INFO L168 Benchmark]: Boogie Preprocessor took 14.87 ms. Allocated memory is still 177.2 MB. Free memory was 137.3 MB in the beginning and 135.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,721 INFO L168 Benchmark]: RCFGBuilder took 405.58 ms. Allocated memory is still 177.2 MB. Free memory was 135.9 MB in the beginning and 112.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,722 INFO L168 Benchmark]: TraceAbstraction took 2330.80 ms. Allocated memory was 177.2 MB in the beginning and 235.9 MB in the end (delta: 58.7 MB). Free memory was 112.1 MB in the beginning and 143.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:36:47,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 177.2 MB. Free memory was 159.4 MB in the beginning and 159.3 MB in the end (delta: 106.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 363.43 ms. Allocated memory is still 177.2 MB. Free memory was 141.0 MB in the beginning and 139.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 25.18 ms. Allocated memory is still 177.2 MB. Free memory was 139.0 MB in the beginning and 137.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.87 ms. Allocated memory is still 177.2 MB. Free memory was 137.3 MB in the beginning and 135.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 405.58 ms. Allocated memory is still 177.2 MB. Free memory was 135.9 MB in the beginning and 112.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2330.80 ms. Allocated memory was 177.2 MB in the beginning and 235.9 MB in the end (delta: 58.7 MB). Free memory was 112.1 MB in the beginning and 143.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2213.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1156.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 64.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 142 SDslu, 239 SDs, 0 SdLazy, 353 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 244.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 836.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=5, InterpolantAutomatonStates: 71, 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: 26.4ms SsaConstructionTime, 137.9ms SatisfiabilityAnalysisTime, 686.2ms InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 436 ConstructedInterpolants, 0 QuantifiedInterpolants, 1370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...