/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:58:42,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:58:42,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:58:42,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:58:42,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:58:42,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:58:42,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:58:42,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:58:42,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:58:42,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:58:42,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:58:42,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:58:42,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:58:42,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:58:42,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:58:42,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:58:42,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:58:42,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:58:42,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:58:42,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:58:42,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:58:42,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:58:42,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:58:42,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:58:42,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 04:58:42,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 04:58:42,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 04:58:42,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 04:58:42,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 04:58:42,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 04:58:42,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 04:58:42,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 04:58:42,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 04:58:42,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 04:58:42,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 04:58:42,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 04:58:42,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 04:58:42,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 04:58:42,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:58:42,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:58:42,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:58:42,278 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-RepeatedVariableLbe.epf [2021-03-25 04:58:42,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:58:42,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:58:42,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:58:42,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:58:42,315 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:58:42,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:58:42,316 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:58:42,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:58:42,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:58:42,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:58:42,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:58:42,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:58:42,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:58:42,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:58:42,318 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:58:42,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:58:42,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:58:42,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:58:42,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:58:42,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:58:42,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:58:42,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:58:42,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:58:42,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:58:42,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:58:42,322 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:58:42,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:58:42,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:58:42,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:58:42,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:58:42,662 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:58:42,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-03-25 04:58:42,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf157a0c/eabfb9a950184cd097ec7f81908f33b8/FLAG9c43c37c8 [2021-03-25 04:58:43,307 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:58:43,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-03-25 04:58:43,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf157a0c/eabfb9a950184cd097ec7f81908f33b8/FLAG9c43c37c8 [2021-03-25 04:58:43,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cf157a0c/eabfb9a950184cd097ec7f81908f33b8 [2021-03-25 04:58:43,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:58:43,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:58:43,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:58:43,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:58:43,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:58:43,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:58:43" (1/1) ... [2021-03-25 04:58:43,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6976730d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:43, skipping insertion in model container [2021-03-25 04:58:43,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:58:43" (1/1) ... [2021-03-25 04:58:43,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:58:43,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:58:43,887 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i[950,963] [2021-03-25 04:58:44,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:58:44,070 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:58:44,080 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i[950,963] [2021-03-25 04:58:44,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:58:44,188 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:58:44,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44 WrapperNode [2021-03-25 04:58:44,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:58:44,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:58:44,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:58:44,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:58:44,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:58:44,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:58:44,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:58:44,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:58:44,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (1/1) ... [2021-03-25 04:58:44,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:58:44,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:58:44,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:58:44,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:58:44,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (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 [2021-03-25 04:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:58:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:58:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:58:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:58:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:58:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:58:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:58:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:58:44,361 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 04:58:44,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:58:44,768 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:58:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:58:44 BoogieIcfgContainer [2021-03-25 04:58:44,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:58:44,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:58:44,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:58:44,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:58:44,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:58:43" (1/3) ... [2021-03-25 04:58:44,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7210970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:58:44, skipping insertion in model container [2021-03-25 04:58:44,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:58:44" (2/3) ... [2021-03-25 04:58:44,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7210970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:58:44, skipping insertion in model container [2021-03-25 04:58:44,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:58:44" (3/3) ... [2021-03-25 04:58:44,779 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2021-03-25 04:58:44,784 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:58:44,788 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:58:44,789 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:58:44,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,832 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,835 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,835 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,835 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,835 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,841 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,842 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,842 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,846 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,847 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:58:44,859 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:58:44,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 04:58:44,899 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:58:44,899 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:58:44,899 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:58:44,900 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:58:44,900 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:58:44,900 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:58:44,900 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:58:44,900 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:58:44,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:58:44,958 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 04:58:44,958 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:58:44,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 04:58:44,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 04:58:44,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 04:58:44,976 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:44,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:58:44,986 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 04:58:44,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 04:58:45,000 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 04:58:45,000 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:58:45,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 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. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 04:58:45,002 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 04:58:46,665 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 04:58:46,667 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 04:58:46,670 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1695 [2021-03-25 04:58:46,683 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 04:58:46,683 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:58:46,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:46,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:46,684 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:46,692 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-25 04:58:46,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:46,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481166549] [2021-03-25 04:58:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:46,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:46,994 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:46,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:47,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:47,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:47,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481166549] [2021-03-25 04:58:47,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:47,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:58:47,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838258028] [2021-03-25 04:58:47,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:47,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:47,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:47,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:47,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-25 04:58:47,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:47,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:47,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-25 04:58:47,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:47,165 INFO L129 PetriNetUnfolder]: 90/223 cut-off events. [2021-03-25 04:58:47,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:58:47,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 223 events. 90/223 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1016 event pairs, 6 based on Foata normal form. 26/239 useless extension candidates. Maximal degree in co-relation 393. Up to 55 conditions per place. [2021-03-25 04:58:47,168 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 11 selfloop transitions, 6 changer transitions 14/43 dead transitions. [2021-03-25 04:58:47,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 157 flow [2021-03-25 04:58:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:58:47,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:58:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2021-03-25 04:58:47,183 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7573891625615764 [2021-03-25 04:58:47,183 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2021-03-25 04:58:47,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2021-03-25 04:58:47,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:47,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2021-03-25 04:58:47,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:47,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:47,200 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:47,201 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 615 transitions. [2021-03-25 04:58:47,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 157 flow [2021-03-25 04:58:47,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:58:47,206 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-25 04:58:47,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 04:58:47,208 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-25 04:58:47,208 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:47,208 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 04:58:47,209 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 106 flow [2021-03-25 04:58:47,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 25 transitions, 106 flow [2021-03-25 04:58:47,221 INFO L129 PetriNetUnfolder]: 38/136 cut-off events. [2021-03-25 04:58:47,221 INFO L130 PetriNetUnfolder]: For 79/85 co-relation queries the response was YES. [2021-03-25 04:58:47,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 136 events. 38/136 cut-off events. For 79/85 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 602 event pairs, 14 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 317. Up to 41 conditions per place. [2021-03-25 04:58:47,223 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 04:58:47,665 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:58:47,849 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 04:58:47,933 INFO L154 LiptonReduction]: Checked pairs total: 171 [2021-03-25 04:58:47,933 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 04:58:47,934 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 726 [2021-03-25 04:58:47,935 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 100 flow [2021-03-25 04:58:47,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:47,936 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:47,936 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:47,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:58:47,937 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:47,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2143174420, now seen corresponding path program 1 times [2021-03-25 04:58:47,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:47,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405789262] [2021-03-25 04:58:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:47,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:47,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:58:47,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:47,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:47,999 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:48,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:48,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:48,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405789262] [2021-03-25 04:58:48,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:48,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:58:48,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417016169] [2021-03-25 04:58:48,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:48,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:48,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:48,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:48,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2021-03-25 04:58:48,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:48,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2021-03-25 04:58:48,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:48,146 INFO L129 PetriNetUnfolder]: 131/322 cut-off events. [2021-03-25 04:58:48,146 INFO L130 PetriNetUnfolder]: For 502/606 co-relation queries the response was YES. [2021-03-25 04:58:48,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 322 events. 131/322 cut-off events. For 502/606 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1691 event pairs, 4 based on Foata normal form. 27/345 useless extension candidates. Maximal degree in co-relation 994. Up to 103 conditions per place. [2021-03-25 04:58:48,150 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 18 selfloop transitions, 13 changer transitions 21/61 dead transitions. [2021-03-25 04:58:48,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 432 flow [2021-03-25 04:58:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 04:58:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 04:58:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 781 transitions. [2021-03-25 04:58:48,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7292250233426704 [2021-03-25 04:58:48,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 781 transitions. [2021-03-25 04:58:48,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 781 transitions. [2021-03-25 04:58:48,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:48,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 781 transitions. [2021-03-25 04:58:48,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.77777777777777) internal successors, (781), 9 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,158 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,158 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 100 flow. Second operand 9 states and 781 transitions. [2021-03-25 04:58:48,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 432 flow [2021-03-25 04:58:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 419 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 04:58:48,162 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 234 flow [2021-03-25 04:58:48,162 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=234, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-03-25 04:58:48,162 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-25 04:58:48,162 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:48,163 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 31 transitions, 234 flow [2021-03-25 04:58:48,163 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 31 transitions, 234 flow [2021-03-25 04:58:48,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 31 transitions, 234 flow [2021-03-25 04:58:48,180 INFO L129 PetriNetUnfolder]: 56/181 cut-off events. [2021-03-25 04:58:48,180 INFO L130 PetriNetUnfolder]: For 563/609 co-relation queries the response was YES. [2021-03-25 04:58:48,181 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 181 events. 56/181 cut-off events. For 563/609 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 992 event pairs, 12 based on Foata normal form. 11/184 useless extension candidates. Maximal degree in co-relation 703. Up to 58 conditions per place. [2021-03-25 04:58:48,183 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-25 04:58:48,187 INFO L154 LiptonReduction]: Checked pairs total: 68 [2021-03-25 04:58:48,187 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:58:48,187 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 04:58:48,188 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 234 flow [2021-03-25 04:58:48,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,188 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:48,188 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:48,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:58:48,189 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:48,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash 577954877, now seen corresponding path program 1 times [2021-03-25 04:58:48,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:48,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482594348] [2021-03-25 04:58:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:48,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,227 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:48,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:48,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:48,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482594348] [2021-03-25 04:58:48,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:48,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:58:48,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095285279] [2021-03-25 04:58:48,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:48,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:48,242 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 04:58:48,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:48,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 04:58:48,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:48,314 INFO L129 PetriNetUnfolder]: 67/204 cut-off events. [2021-03-25 04:58:48,314 INFO L130 PetriNetUnfolder]: For 934/996 co-relation queries the response was YES. [2021-03-25 04:58:48,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 204 events. 67/204 cut-off events. For 934/996 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1013 event pairs, 1 based on Foata normal form. 20/223 useless extension candidates. Maximal degree in co-relation 900. Up to 70 conditions per place. [2021-03-25 04:58:48,317 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 15 selfloop transitions, 13 changer transitions 17/56 dead transitions. [2021-03-25 04:58:48,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 566 flow [2021-03-25 04:58:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:58:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:58:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2021-03-25 04:58:48,319 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.737094837935174 [2021-03-25 04:58:48,320 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2021-03-25 04:58:48,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2021-03-25 04:58:48,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:48,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2021-03-25 04:58:48,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,325 INFO L185 Difference]: Start difference. First operand has 44 places, 31 transitions, 234 flow. Second operand 7 states and 614 transitions. [2021-03-25 04:58:48,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 566 flow [2021-03-25 04:58:48,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 546 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-25 04:58:48,333 INFO L241 Difference]: Finished difference. Result has 53 places, 35 transitions, 339 flow [2021-03-25 04:58:48,333 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=53, PETRI_TRANSITIONS=35} [2021-03-25 04:58:48,333 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-25 04:58:48,333 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:48,333 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 35 transitions, 339 flow [2021-03-25 04:58:48,335 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 35 transitions, 339 flow [2021-03-25 04:58:48,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 35 transitions, 339 flow [2021-03-25 04:58:48,363 INFO L129 PetriNetUnfolder]: 36/132 cut-off events. [2021-03-25 04:58:48,363 INFO L130 PetriNetUnfolder]: For 589/617 co-relation queries the response was YES. [2021-03-25 04:58:48,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 132 events. 36/132 cut-off events. For 589/617 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 613 event pairs, 6 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 580. Up to 44 conditions per place. [2021-03-25 04:58:48,367 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-25 04:58:48,371 INFO L154 LiptonReduction]: Checked pairs total: 124 [2021-03-25 04:58:48,371 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:58:48,371 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 04:58:48,375 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 339 flow [2021-03-25 04:58:48,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,376 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:48,376 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:48,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:58:48,376 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:48,377 INFO L82 PathProgramCache]: Analyzing trace with hash 624329217, now seen corresponding path program 1 times [2021-03-25 04:58:48,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:48,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789907974] [2021-03-25 04:58:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:48,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,452 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:48,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:48,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:48,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789907974] [2021-03-25 04:58:48,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:48,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:58:48,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043140047] [2021-03-25 04:58:48,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:48,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:48,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 04:58:48,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:48,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 04:58:48,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:48,532 INFO L129 PetriNetUnfolder]: 34/130 cut-off events. [2021-03-25 04:58:48,532 INFO L130 PetriNetUnfolder]: For 849/916 co-relation queries the response was YES. [2021-03-25 04:58:48,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 130 events. 34/130 cut-off events. For 849/916 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 564 event pairs, 1 based on Foata normal form. 12/141 useless extension candidates. Maximal degree in co-relation 638. Up to 43 conditions per place. [2021-03-25 04:58:48,534 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 17 selfloop transitions, 12 changer transitions 13/53 dead transitions. [2021-03-25 04:58:48,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 655 flow [2021-03-25 04:58:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 04:58:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 04:58:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 525 transitions. [2021-03-25 04:58:48,536 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2021-03-25 04:58:48,536 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 525 transitions. [2021-03-25 04:58:48,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 525 transitions. [2021-03-25 04:58:48,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:48,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 525 transitions. [2021-03-25 04:58:48,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.5) internal successors, (525), 6 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,540 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,542 INFO L185 Difference]: Start difference. First operand has 50 places, 35 transitions, 339 flow. Second operand 6 states and 525 transitions. [2021-03-25 04:58:48,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 655 flow [2021-03-25 04:58:48,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 626 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-03-25 04:58:48,548 INFO L241 Difference]: Finished difference. Result has 56 places, 36 transitions, 394 flow [2021-03-25 04:58:48,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2021-03-25 04:58:48,548 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-25 04:58:48,548 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:48,549 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 36 transitions, 394 flow [2021-03-25 04:58:48,549 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 36 transitions, 394 flow [2021-03-25 04:58:48,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 36 transitions, 394 flow [2021-03-25 04:58:48,559 INFO L129 PetriNetUnfolder]: 17/89 cut-off events. [2021-03-25 04:58:48,560 INFO L130 PetriNetUnfolder]: For 401/431 co-relation queries the response was YES. [2021-03-25 04:58:48,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 89 events. 17/89 cut-off events. For 401/431 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 377 event pairs, 1 based on Foata normal form. 4/91 useless extension candidates. Maximal degree in co-relation 407. Up to 26 conditions per place. [2021-03-25 04:58:48,561 INFO L142 LiptonReduction]: Number of co-enabled transitions 182 [2021-03-25 04:58:48,639 INFO L154 LiptonReduction]: Checked pairs total: 249 [2021-03-25 04:58:48,639 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:58:48,639 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 91 [2021-03-25 04:58:48,640 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 35 transitions, 392 flow [2021-03-25 04:58:48,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:48,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:48,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:58:48,641 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:48,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1748794311, now seen corresponding path program 1 times [2021-03-25 04:58:48,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:48,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152088383] [2021-03-25 04:58:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:48,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,695 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:48,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:48,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152088383] [2021-03-25 04:58:48,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:48,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:58:48,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779831010] [2021-03-25 04:58:48,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 04:58:48,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:48,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 04:58:48,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 04:58:48,721 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 120 [2021-03-25 04:58:48,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 35 transitions, 392 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:48,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 120 [2021-03-25 04:58:48,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:48,767 INFO L129 PetriNetUnfolder]: 14/90 cut-off events. [2021-03-25 04:58:48,767 INFO L130 PetriNetUnfolder]: For 589/641 co-relation queries the response was YES. [2021-03-25 04:58:48,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 90 events. 14/90 cut-off events. For 589/641 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 400 event pairs, 0 based on Foata normal form. 6/96 useless extension candidates. Maximal degree in co-relation 458. Up to 26 conditions per place. [2021-03-25 04:58:48,768 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 8 selfloop transitions, 12 changer transitions 16/47 dead transitions. [2021-03-25 04:58:48,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 646 flow [2021-03-25 04:58:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:58:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:58:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2021-03-25 04:58:48,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7283333333333334 [2021-03-25 04:58:48,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2021-03-25 04:58:48,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2021-03-25 04:58:48,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:48,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2021-03-25 04:58:48,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,774 INFO L185 Difference]: Start difference. First operand has 53 places, 35 transitions, 392 flow. Second operand 5 states and 437 transitions. [2021-03-25 04:58:48,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 646 flow [2021-03-25 04:58:48,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 599 flow, removed 17 selfloop flow, removed 6 redundant places. [2021-03-25 04:58:48,780 INFO L241 Difference]: Finished difference. Result has 52 places, 30 transitions, 310 flow [2021-03-25 04:58:48,780 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2021-03-25 04:58:48,780 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-25 04:58:48,780 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:48,781 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 30 transitions, 310 flow [2021-03-25 04:58:48,781 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 30 transitions, 310 flow [2021-03-25 04:58:48,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 52 places, 30 transitions, 310 flow [2021-03-25 04:58:48,787 INFO L129 PetriNetUnfolder]: 8/54 cut-off events. [2021-03-25 04:58:48,788 INFO L130 PetriNetUnfolder]: For 291/306 co-relation queries the response was YES. [2021-03-25 04:58:48,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 54 events. 8/54 cut-off events. For 291/306 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 178 event pairs, 1 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 238. Up to 14 conditions per place. [2021-03-25 04:58:48,789 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 04:58:48,791 INFO L154 LiptonReduction]: Checked pairs total: 103 [2021-03-25 04:58:48,791 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:58:48,791 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 04:58:48,794 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 310 flow [2021-03-25 04:58:48,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:48,794 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:48,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:58:48,795 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:48,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:48,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2126382377, now seen corresponding path program 1 times [2021-03-25 04:58:48,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:48,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111675292] [2021-03-25 04:58:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:48,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:58:48,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:48,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:48,850 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:48,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:48,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111675292] [2021-03-25 04:58:48,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:48,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:58:48,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017182398] [2021-03-25 04:58:48,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:48,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:48,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:48,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:48,868 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 120 [2021-03-25 04:58:48,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:48,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 120 [2021-03-25 04:58:48,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:48,924 INFO L129 PetriNetUnfolder]: 7/49 cut-off events. [2021-03-25 04:58:48,925 INFO L130 PetriNetUnfolder]: For 284/303 co-relation queries the response was YES. [2021-03-25 04:58:48,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 49 events. 7/49 cut-off events. For 284/303 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 150 event pairs, 0 based on Foata normal form. 10/59 useless extension candidates. Maximal degree in co-relation 243. Up to 14 conditions per place. [2021-03-25 04:58:48,925 INFO L132 encePairwiseOnDemand]: 113/120 looper letters, 4 selfloop transitions, 7 changer transitions 13/34 dead transitions. [2021-03-25 04:58:48,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 34 transitions, 401 flow [2021-03-25 04:58:48,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:58:48,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:58:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 634 transitions. [2021-03-25 04:58:48,927 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7547619047619047 [2021-03-25 04:58:48,927 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 634 transitions. [2021-03-25 04:58:48,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 634 transitions. [2021-03-25 04:58:48,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:48,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 634 transitions. [2021-03-25 04:58:48,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,931 INFO L185 Difference]: Start difference. First operand has 52 places, 30 transitions, 310 flow. Second operand 7 states and 634 transitions. [2021-03-25 04:58:48,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 34 transitions, 401 flow [2021-03-25 04:58:48,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 34 transitions, 358 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-25 04:58:48,934 INFO L241 Difference]: Finished difference. Result has 54 places, 21 transitions, 173 flow [2021-03-25 04:58:48,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=54, PETRI_TRANSITIONS=21} [2021-03-25 04:58:48,934 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 04:58:48,934 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:48,935 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 21 transitions, 173 flow [2021-03-25 04:58:48,935 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 21 transitions, 173 flow [2021-03-25 04:58:48,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 21 transitions, 173 flow [2021-03-25 04:58:48,938 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 04:58:48,938 INFO L130 PetriNetUnfolder]: For 80/82 co-relation queries the response was YES. [2021-03-25 04:58:48,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 23 events. 2/23 cut-off events. For 80/82 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 88. Up to 7 conditions per place. [2021-03-25 04:58:48,939 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 04:58:48,963 INFO L154 LiptonReduction]: Checked pairs total: 82 [2021-03-25 04:58:48,963 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:58:48,963 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 04:58:48,965 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 20 transitions, 169 flow [2021-03-25 04:58:48,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:48,965 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:58:48,965 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:58:48,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:58:48,965 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:58:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:58:48,966 INFO L82 PathProgramCache]: Analyzing trace with hash -760861359, now seen corresponding path program 1 times [2021-03-25 04:58:48,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:58:48,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18938862] [2021-03-25 04:58:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:58:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:58:49,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:49,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:49,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:58:49,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:58:49,029 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:58:49,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:58:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 04:58:49,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18938862] [2021-03-25 04:58:49,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:58:49,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:58:49,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181598615] [2021-03-25 04:58:49,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:58:49,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:58:49,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:58:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:58:49,041 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 121 [2021-03-25 04:58:49,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 20 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:49,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:58:49,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 121 [2021-03-25 04:58:49,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:58:49,055 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-25 04:58:49,055 INFO L130 PetriNetUnfolder]: For 99/108 co-relation queries the response was YES. [2021-03-25 04:58:49,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 20 events. 2/20 cut-off events. For 99/108 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 22 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 96. Up to 10 conditions per place. [2021-03-25 04:58:49,056 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-25 04:58:49,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 19 transitions, 175 flow [2021-03-25 04:58:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:58:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:58:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 351 transitions. [2021-03-25 04:58:49,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7252066115702479 [2021-03-25 04:58:49,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 351 transitions. [2021-03-25 04:58:49,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 351 transitions. [2021-03-25 04:58:49,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:58:49,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 351 transitions. [2021-03-25 04:58:49,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:49,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:49,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:49,060 INFO L185 Difference]: Start difference. First operand has 48 places, 20 transitions, 169 flow. Second operand 4 states and 351 transitions. [2021-03-25 04:58:49,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 19 transitions, 175 flow [2021-03-25 04:58:49,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 19 transitions, 110 flow, removed 11 selfloop flow, removed 16 redundant places. [2021-03-25 04:58:49,062 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-03-25 04:58:49,062 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-03-25 04:58:49,062 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 04:58:49,062 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:58:49,062 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-25 04:58:49,063 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-25 04:58:49,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:58:49,063 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:58:49,063 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:58:49,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 04:58:49,063 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:58:49,063 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:58:49,063 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:58:49,063 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 04:58:49,065 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:58:49,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 04:58:49,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 04:58:49,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:58:49 BasicIcfg [2021-03-25 04:58:49,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:58:49,072 INFO L168 Benchmark]: Toolchain (without parser) took 5348.98 ms. Allocated memory was 331.4 MB in the beginning and 423.6 MB in the end (delta: 92.3 MB). Free memory was 294.3 MB in the beginning and 284.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 104.7 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,073 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 331.4 MB. Free memory was 312.7 MB in the beginning and 312.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:58:49,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.19 ms. Allocated memory is still 331.4 MB. Free memory was 294.2 MB in the beginning and 293.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 331.4 MB. Free memory was 293.1 MB in the beginning and 291.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,073 INFO L168 Benchmark]: Boogie Preprocessor took 31.45 ms. Allocated memory is still 331.4 MB. Free memory was 291.0 MB in the beginning and 289.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,074 INFO L168 Benchmark]: RCFGBuilder took 492.69 ms. Allocated memory is still 331.4 MB. Free memory was 289.3 MB in the beginning and 264.7 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,074 INFO L168 Benchmark]: TraceAbstraction took 4296.27 ms. Allocated memory was 331.4 MB in the beginning and 423.6 MB in the end (delta: 92.3 MB). Free memory was 264.7 MB in the beginning and 284.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 16.0 GB. [2021-03-25 04:58:49,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 331.4 MB. Free memory was 312.7 MB in the beginning and 312.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 467.19 ms. Allocated memory is still 331.4 MB. Free memory was 294.2 MB in the beginning and 293.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.75 ms. Allocated memory is still 331.4 MB. Free memory was 293.1 MB in the beginning and 291.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.45 ms. Allocated memory is still 331.4 MB. Free memory was 291.0 MB in the beginning and 289.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 492.69 ms. Allocated memory is still 331.4 MB. Free memory was 289.3 MB in the beginning and 264.7 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4296.27 ms. Allocated memory was 331.4 MB in the beginning and 423.6 MB in the end (delta: 92.3 MB). Free memory was 264.7 MB in the beginning and 284.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 74.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1681.9ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 668, positive: 621, positive conditional: 0, positive unconditional: 621, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 443, positive: 426, positive conditional: 0, positive unconditional: 426, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 443, positive: 426, positive conditional: 0, positive unconditional: 426, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 668, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 443, unknown conditional: 0, unknown unconditional: 443] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 724.7ms, 40 PlacesBefore, 34 PlacesAfterwards, 25 TransitionsBefore, 22 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 171 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.2ms, 48 PlacesBefore, 44 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 68 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.3ms, 53 PlacesBefore, 50 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 124 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 89.6ms, 56 PlacesBefore, 53 PlacesAfterwards, 36 TransitionsBefore, 35 TransitionsAfterwards, 182 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 249 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 42, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.5ms, 52 PlacesBefore, 52 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 103 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.2ms, 54 PlacesBefore, 48 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 82 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 34 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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 CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4170.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 636.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1774.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67 SDtfs, 85 SDslu, 72 SDs, 0 SdLazy, 101 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 237.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=394occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 19.3ms SsaConstructionTime, 179.6ms SatisfiabilityAnalysisTime, 442.6ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...