/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/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:04:35,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:04:35,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:04:35,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:04:35,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:04:35,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:04:35,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:04:35,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:04:35,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:04:35,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:04:35,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:04:35,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:04:35,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:04:35,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:04:35,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:04:35,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:04:35,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:04:35,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:04:35,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:04:35,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:04:35,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:04:35,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:04:35,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:04:35,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:04:35,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:04:35,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:04:35,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:04:35,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:04:35,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:04:35,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:04:35,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:04:35,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:04:35,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:04:35,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:04:35,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:04:35,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:04:35,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:04:35,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:04:35,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:04:35,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:04:35,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:04:35,269 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 05:04:35,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:04:35,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:04:35,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:04:35,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:04:35,302 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:04:35,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:04:35,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:04:35,303 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:04:35,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:04:35,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:04:35,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:04:35,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:04:35,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:04:35,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:04:35,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:04:35,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:04:35,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:04:35,672 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:04:35,672 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:04:35,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-03-25 05:04:35,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99eabb281/d8d99e2983a142adafb8fcbb8ea84fb2/FLAGa30737742 [2021-03-25 05:04:36,327 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:04:36,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-03-25 05:04:36,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99eabb281/d8d99e2983a142adafb8fcbb8ea84fb2/FLAGa30737742 [2021-03-25 05:04:36,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99eabb281/d8d99e2983a142adafb8fcbb8ea84fb2 [2021-03-25 05:04:36,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:04:36,734 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:04:36,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:04:36,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:04:36,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:04:36,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:04:36" (1/1) ... [2021-03-25 05:04:36,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1908953f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:36, skipping insertion in model container [2021-03-25 05:04:36,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:04:36" (1/1) ... [2021-03-25 05:04:36,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:04:36,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:04:36,927 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/safe018_pso.opt.i[949,962] [2021-03-25 05:04:37,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:04:37,080 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:04:37,090 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/safe018_pso.opt.i[949,962] [2021-03-25 05:04:37,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:04:37,188 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:04:37,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37 WrapperNode [2021-03-25 05:04:37,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:04:37,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:04:37,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:04:37,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:04:37,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:04:37,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:04:37,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:04:37,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:04:37,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (1/1) ... [2021-03-25 05:04:37,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:04:37,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:04:37,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:04:37,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:04:37,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (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 05:04:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:04:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:04:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:04:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:04:37,344 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:04:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:04:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:04:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:04:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:04:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:04:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:04:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:04:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:04:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:04:37,347 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 05:04:37,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:04:37,662 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:04:37,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:04:37 BoogieIcfgContainer [2021-03-25 05:04:37,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:04:37,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:04:37,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:04:37,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:04:37,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:04:36" (1/3) ... [2021-03-25 05:04:37,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bef2292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:04:37, skipping insertion in model container [2021-03-25 05:04:37,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:04:37" (2/3) ... [2021-03-25 05:04:37,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bef2292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:04:37, skipping insertion in model container [2021-03-25 05:04:37,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:04:37" (3/3) ... [2021-03-25 05:04:37,670 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-03-25 05:04:37,678 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:04:37,682 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:04:37,683 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:04:37,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,721 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,721 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,721 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,726 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,727 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,727 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,728 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,729 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,729 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,729 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,730 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,734 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,734 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,740 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,741 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,744 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,744 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,745 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:04:37,750 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:04:37,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:04:37,800 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:04:37,800 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:04:37,800 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:04:37,800 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:04:37,800 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:04:37,801 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:04:37,801 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:04:37,801 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:04:37,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:04:37,871 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 05:04:37,871 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:37,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:04:37,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:04:37,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 05:04:37,893 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:37,900 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:04:37,903 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:04:37,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 05:04:37,929 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 05:04:37,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:37,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:04:37,932 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 05:04:39,215 INFO L154 LiptonReduction]: Checked pairs total: 984 [2021-03-25 05:04:39,215 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-25 05:04:39,217 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1325 [2021-03-25 05:04:39,224 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:04:39,225 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:39,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:39,225 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:39,226 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:39,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:39,230 INFO L82 PathProgramCache]: Analyzing trace with hash 933445281, now seen corresponding path program 1 times [2021-03-25 05:04:39,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:39,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584580327] [2021-03-25 05:04:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:39,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:39,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:39,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:39,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:39,415 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 05:04:39,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584580327] [2021-03-25 05:04:39,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:39,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:04:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753922619] [2021-03-25 05:04:39,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:04:39,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:39,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:04:39,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:04:39,436 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 113 [2021-03-25 05:04:39,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 05:04:39,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:39,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 113 [2021-03-25 05:04:39,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:39,450 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:04:39,450 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:39,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:04:39,452 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 1 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2021-03-25 05:04:39,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 55 flow [2021-03-25 05:04:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:04:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:04:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-25 05:04:39,463 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8967551622418879 [2021-03-25 05:04:39,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-25 05:04:39,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-25 05:04:39,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:39,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-25 05:04:39,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 05:04:39,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 05:04:39,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 05:04:39,477 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 304 transitions. [2021-03-25 05:04:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 55 flow [2021-03-25 05:04:39,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 52 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:04:39,481 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 54 flow [2021-03-25 05:04:39,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-25 05:04:39,483 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-25 05:04:39,483 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:39,483 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 20 transitions, 54 flow [2021-03-25 05:04:39,483 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 20 transitions, 54 flow [2021-03-25 05:04:39,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 20 transitions, 54 flow [2021-03-25 05:04:39,487 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 05:04:39,487 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:04:39,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 20 events. 0/20 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:04:39,487 INFO L142 LiptonReduction]: Number of co-enabled transitions 120 [2021-03-25 05:04:39,779 INFO L154 LiptonReduction]: Checked pairs total: 318 [2021-03-25 05:04:39,779 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:04:39,779 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 296 [2021-03-25 05:04:39,781 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2021-03-25 05:04:39,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 05:04:39,781 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:39,781 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:39,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:04:39,782 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:39,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1128518235, now seen corresponding path program 1 times [2021-03-25 05:04:39,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:39,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964287901] [2021-03-25 05:04:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:39,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:39,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:39,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:39,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:39,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:39,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:39,917 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 05:04:39,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964287901] [2021-03-25 05:04:39,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:39,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:39,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044734551] [2021-03-25 05:04:39,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:39,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:39,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:39,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:39,921 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2021-03-25 05:04:39,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 05:04:39,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:39,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2021-03-25 05:04:39,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:39,958 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-03-25 05:04:39,959 INFO L130 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2021-03-25 05:04:39,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 37 events. 5/37 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 1 based on Foata normal form. 5/41 useless extension candidates. Maximal degree in co-relation 64. Up to 7 conditions per place. [2021-03-25 05:04:39,960 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 4 selfloop transitions, 3 changer transitions 1/20 dead transitions. [2021-03-25 05:04:39,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 73 flow [2021-03-25 05:04:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:04:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:04:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2021-03-25 05:04:39,964 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8318965517241379 [2021-03-25 05:04:39,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2021-03-25 05:04:39,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2021-03-25 05:04:39,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:39,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2021-03-25 05:04:39,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 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 05:04:39,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 05:04:39,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 05:04:39,969 INFO L185 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 4 states and 386 transitions. [2021-03-25 05:04:39,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 73 flow [2021-03-25 05:04:39,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:04:39,970 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 58 flow [2021-03-25 05:04:39,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2021-03-25 05:04:39,970 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-25 05:04:39,971 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:39,971 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 17 transitions, 58 flow [2021-03-25 05:04:39,971 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 17 transitions, 58 flow [2021-03-25 05:04:39,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 17 transitions, 58 flow [2021-03-25 05:04:39,974 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-25 05:04:39,974 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 05:04:39,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 17 events. 0/17 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:04:39,974 INFO L142 LiptonReduction]: Number of co-enabled transitions 96 [2021-03-25 05:04:40,145 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:04:40,364 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:04:40,438 INFO L154 LiptonReduction]: Checked pairs total: 160 [2021-03-25 05:04:40,439 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:04:40,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 468 [2021-03-25 05:04:40,439 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2021-03-25 05:04:40,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 05:04:40,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:40,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:40,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:04:40,440 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:40,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2141312424, now seen corresponding path program 1 times [2021-03-25 05:04:40,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:40,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154189422] [2021-03-25 05:04:40,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:40,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,495 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:04:40,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:04:40,502 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 05:04:40,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154189422] [2021-03-25 05:04:40,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:40,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:04:40,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003342761] [2021-03-25 05:04:40,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:40,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:40,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:40,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:40,505 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 05:04:40,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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 05:04:40,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:40,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 05:04:40,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:40,518 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-25 05:04:40,518 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 05:04:40,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 25 events. 3/25 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 2 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 54. Up to 10 conditions per place. [2021-03-25 05:04:40,519 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 4 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2021-03-25 05:04:40,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 74 flow [2021-03-25 05:04:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:04:40,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:04:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2021-03-25 05:04:40,520 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8233618233618234 [2021-03-25 05:04:40,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2021-03-25 05:04:40,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2021-03-25 05:04:40,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:40,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2021-03-25 05:04:40,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 05:04:40,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 05:04:40,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 05:04:40,523 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 3 states and 289 transitions. [2021-03-25 05:04:40,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 74 flow [2021-03-25 05:04:40,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 60 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-25 05:04:40,524 INFO L241 Difference]: Finished difference. Result has 28 places, 16 transitions, 52 flow [2021-03-25 05:04:40,524 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2021-03-25 05:04:40,525 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2021-03-25 05:04:40,525 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:40,525 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 16 transitions, 52 flow [2021-03-25 05:04:40,525 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 16 transitions, 52 flow [2021-03-25 05:04:40,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 16 transitions, 52 flow [2021-03-25 05:04:40,527 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 05:04:40,528 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 05:04:40,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 16 events. 0/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:04:40,528 INFO L142 LiptonReduction]: Number of co-enabled transitions 94 [2021-03-25 05:04:40,529 INFO L154 LiptonReduction]: Checked pairs total: 69 [2021-03-25 05:04:40,529 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:40,529 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-03-25 05:04:40,530 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 52 flow [2021-03-25 05:04:40,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 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 05:04:40,530 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:40,530 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:40,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:04:40,531 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1494590282, now seen corresponding path program 1 times [2021-03-25 05:04:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:40,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669503917] [2021-03-25 05:04:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:40,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,592 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 05:04:40,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669503917] [2021-03-25 05:04:40,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:40,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:04:40,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512798565] [2021-03-25 05:04:40,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:40,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:40,595 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 117 [2021-03-25 05:04:40,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 05:04:40,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:40,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 117 [2021-03-25 05:04:40,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:40,613 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 05:04:40,613 INFO L130 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2021-03-25 05:04:40,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 0/21 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 05:04:40,614 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 1 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2021-03-25 05:04:40,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 67 flow [2021-03-25 05:04:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:04:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:04:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 05:04:40,616 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8354700854700855 [2021-03-25 05:04:40,616 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 05:04:40,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 05:04:40,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:40,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 05:04:40,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:04:40,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 05:04:40,618 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 05:04:40,618 INFO L185 Difference]: Start difference. First operand has 28 places, 16 transitions, 52 flow. Second operand 4 states and 391 transitions. [2021-03-25 05:04:40,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 67 flow [2021-03-25 05:04:40,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:04:40,620 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 62 flow [2021-03-25 05:04:40,620 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2021-03-25 05:04:40,620 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 05:04:40,620 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:40,620 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 16 transitions, 62 flow [2021-03-25 05:04:40,621 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 16 transitions, 62 flow [2021-03-25 05:04:40,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 62 flow [2021-03-25 05:04:40,623 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-25 05:04:40,623 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 05:04:40,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 05:04:40,624 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 05:04:40,644 INFO L154 LiptonReduction]: Checked pairs total: 72 [2021-03-25 05:04:40,644 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:04:40,644 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 05:04:40,647 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 60 flow [2021-03-25 05:04:40,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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 05:04:40,647 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:40,647 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:40,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:04:40,648 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash 914227181, now seen corresponding path program 1 times [2021-03-25 05:04:40,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:40,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896721149] [2021-03-25 05:04:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:40,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,704 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 05:04:40,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896721149] [2021-03-25 05:04:40,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:40,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:04:40,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412029171] [2021-03-25 05:04:40,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:40,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:40,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:40,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:40,706 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-25 05:04:40,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 15 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 05:04:40,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:40,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-25 05:04:40,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:40,735 INFO L129 PetriNetUnfolder]: 28/67 cut-off events. [2021-03-25 05:04:40,736 INFO L130 PetriNetUnfolder]: For 130/139 co-relation queries the response was YES. [2021-03-25 05:04:40,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 67 events. 28/67 cut-off events. For 130/139 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 203 event pairs, 12 based on Foata normal form. 9/71 useless extension candidates. Maximal degree in co-relation 161. Up to 45 conditions per place. [2021-03-25 05:04:40,737 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 5 selfloop transitions, 4 changer transitions 7/25 dead transitions. [2021-03-25 05:04:40,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 25 transitions, 112 flow [2021-03-25 05:04:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:04:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:04:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-03-25 05:04:40,738 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7932203389830509 [2021-03-25 05:04:40,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-03-25 05:04:40,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-03-25 05:04:40,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:40,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-03-25 05:04:40,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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 05:04:40,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 05:04:40,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 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 05:04:40,743 INFO L185 Difference]: Start difference. First operand has 30 places, 15 transitions, 60 flow. Second operand 5 states and 468 transitions. [2021-03-25 05:04:40,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 25 transitions, 112 flow [2021-03-25 05:04:40,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 94 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-25 05:04:40,744 INFO L241 Difference]: Finished difference. Result has 31 places, 18 transitions, 78 flow [2021-03-25 05:04:40,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2021-03-25 05:04:40,745 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 05:04:40,745 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:40,745 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 18 transitions, 78 flow [2021-03-25 05:04:40,745 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 18 transitions, 78 flow [2021-03-25 05:04:40,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 18 transitions, 78 flow [2021-03-25 05:04:40,756 INFO L129 PetriNetUnfolder]: 23/54 cut-off events. [2021-03-25 05:04:40,756 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2021-03-25 05:04:40,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 54 events. 23/54 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 11 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 147. Up to 38 conditions per place. [2021-03-25 05:04:40,757 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-25 05:04:40,791 INFO L154 LiptonReduction]: Checked pairs total: 27 [2021-03-25 05:04:40,791 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:04:40,791 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 46 [2021-03-25 05:04:40,792 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 79 flow [2021-03-25 05:04:40,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 05:04:40,792 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:40,793 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:40,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:04:40,793 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:40,793 INFO L82 PathProgramCache]: Analyzing trace with hash 937175861, now seen corresponding path program 1 times [2021-03-25 05:04:40,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:40,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873737001] [2021-03-25 05:04:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:40,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,840 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 05:04:40,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873737001] [2021-03-25 05:04:40,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:40,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:40,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158798500] [2021-03-25 05:04:40,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:04:40,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:40,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:04:40,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:04:40,843 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2021-03-25 05:04:40,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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 05:04:40,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:40,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2021-03-25 05:04:40,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:40,876 INFO L129 PetriNetUnfolder]: 16/51 cut-off events. [2021-03-25 05:04:40,876 INFO L130 PetriNetUnfolder]: For 80/110 co-relation queries the response was YES. [2021-03-25 05:04:40,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 51 events. 16/51 cut-off events. For 80/110 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 127 event pairs, 2 based on Foata normal form. 12/62 useless extension candidates. Maximal degree in co-relation 170. Up to 35 conditions per place. [2021-03-25 05:04:40,877 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 7 changer transitions 7/28 dead transitions. [2021-03-25 05:04:40,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 175 flow [2021-03-25 05:04:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:04:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:04:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-25 05:04:40,879 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2021-03-25 05:04:40,879 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-25 05:04:40,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-25 05:04:40,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:40,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-25 05:04:40,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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 05:04:40,882 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 05:04:40,882 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 05:04:40,882 INFO L185 Difference]: Start difference. First operand has 29 places, 18 transitions, 79 flow. Second operand 6 states and 561 transitions. [2021-03-25 05:04:40,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 175 flow [2021-03-25 05:04:40,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 169 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:04:40,884 INFO L241 Difference]: Finished difference. Result has 35 places, 21 transitions, 129 flow [2021-03-25 05:04:40,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=35, PETRI_TRANSITIONS=21} [2021-03-25 05:04:40,885 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 05:04:40,885 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:40,885 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 21 transitions, 129 flow [2021-03-25 05:04:40,885 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 21 transitions, 129 flow [2021-03-25 05:04:40,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 21 transitions, 129 flow [2021-03-25 05:04:40,889 INFO L129 PetriNetUnfolder]: 11/39 cut-off events. [2021-03-25 05:04:40,889 INFO L130 PetriNetUnfolder]: For 79/87 co-relation queries the response was YES. [2021-03-25 05:04:40,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 39 events. 11/39 cut-off events. For 79/87 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 2 based on Foata normal form. 2/40 useless extension candidates. Maximal degree in co-relation 137. Up to 23 conditions per place. [2021-03-25 05:04:40,890 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-25 05:04:40,926 INFO L154 LiptonReduction]: Checked pairs total: 20 [2021-03-25 05:04:40,926 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:04:40,927 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 42 [2021-03-25 05:04:40,927 INFO L480 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 131 flow [2021-03-25 05:04:40,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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 05:04:40,928 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:40,928 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:40,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:04:40,928 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:40,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1681884125, now seen corresponding path program 1 times [2021-03-25 05:04:40,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:40,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735816936] [2021-03-25 05:04:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:40,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:40,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:41,002 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 05:04:41,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735816936] [2021-03-25 05:04:41,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:41,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:04:41,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297075783] [2021-03-25 05:04:41,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:04:41,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:41,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:04:41,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:04:41,008 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-03-25 05:04:41,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 05:04:41,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:41,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-03-25 05:04:41,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:41,062 INFO L129 PetriNetUnfolder]: 7/35 cut-off events. [2021-03-25 05:04:41,062 INFO L130 PetriNetUnfolder]: For 111/139 co-relation queries the response was YES. [2021-03-25 05:04:41,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 35 events. 7/35 cut-off events. For 111/139 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 10/44 useless extension candidates. Maximal degree in co-relation 131. Up to 20 conditions per place. [2021-03-25 05:04:41,063 INFO L132 encePairwiseOnDemand]: 112/120 looper letters, 2 selfloop transitions, 10 changer transitions 4/25 dead transitions. [2021-03-25 05:04:41,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 199 flow [2021-03-25 05:04:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:04:41,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:04:41,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2021-03-25 05:04:41,066 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2021-03-25 05:04:41,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2021-03-25 05:04:41,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2021-03-25 05:04:41,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:41,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2021-03-25 05:04:41,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 05:04:41,070 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 05:04:41,071 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 05:04:41,071 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 131 flow. Second operand 7 states and 648 transitions. [2021-03-25 05:04:41,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 199 flow [2021-03-25 05:04:41,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 163 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-25 05:04:41,075 INFO L241 Difference]: Finished difference. Result has 38 places, 21 transitions, 133 flow [2021-03-25 05:04:41,076 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2021-03-25 05:04:41,076 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-25 05:04:41,076 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:41,076 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 21 transitions, 133 flow [2021-03-25 05:04:41,076 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 21 transitions, 133 flow [2021-03-25 05:04:41,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 21 transitions, 133 flow [2021-03-25 05:04:41,084 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-25 05:04:41,084 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-03-25 05:04:41,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 29 events. 5/29 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 42 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 82. Up to 11 conditions per place. [2021-03-25 05:04:41,084 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-25 05:04:41,248 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 05:04:41,248 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:04:41,248 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 172 [2021-03-25 05:04:41,251 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 131 flow [2021-03-25 05:04:41,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 05:04:41,252 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:04:41,252 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:04:41,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:04:41,252 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:04:41,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:04:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1824472433, now seen corresponding path program 1 times [2021-03-25 05:04:41,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:04:41,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153220234] [2021-03-25 05:04:41,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:04:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:04:41,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:41,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:04:41,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:41,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:04:41,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:04:41,313 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 05:04:41,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153220234] [2021-03-25 05:04:41,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:04:41,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:04:41,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295656928] [2021-03-25 05:04:41,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:04:41,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:04:41,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:04:41,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:04:41,317 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2021-03-25 05:04:41,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 05:04:41,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:04:41,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2021-03-25 05:04:41,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:04:41,336 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:04:41,336 INFO L130 PetriNetUnfolder]: For 67/76 co-relation queries the response was YES. [2021-03-25 05:04:41,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 24 events. 5/24 cut-off events. For 67/76 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 0 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 88. Up to 10 conditions per place. [2021-03-25 05:04:41,337 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 05:04:41,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 131 flow [2021-03-25 05:04:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:04:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:04:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-03-25 05:04:41,338 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7762096774193549 [2021-03-25 05:04:41,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-03-25 05:04:41,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-03-25 05:04:41,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:04:41,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-03-25 05:04:41,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 05:04:41,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 05:04:41,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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 05:04:41,341 INFO L185 Difference]: Start difference. First operand has 34 places, 19 transitions, 131 flow. Second operand 4 states and 385 transitions. [2021-03-25 05:04:41,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 131 flow [2021-03-25 05:04:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 79 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-25 05:04:41,342 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-25 05:04:41,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-25 05:04:41,343 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2021-03-25 05:04:41,343 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:04:41,343 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:04:41,343 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:04:41,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:04:41,343 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:04:41,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:04:41,344 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 05:04:41,344 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:04:41,344 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:04:41,344 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:04:41,344 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:04:41,347 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:04:41,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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 05:04:41,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:04:41,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:04:41 BasicIcfg [2021-03-25 05:04:41,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:04:41,352 INFO L168 Benchmark]: Toolchain (without parser) took 4617.83 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 311.2 MB in the beginning and 174.7 MB in the end (delta: 136.4 MB). Peak memory consumption was 210.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,352 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 348.1 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:04:41,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.45 ms. Allocated memory is still 348.1 MB. Free memory was 311.0 MB in the beginning and 311.6 MB in the end (delta: -553.2 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.78 ms. Allocated memory is still 348.1 MB. Free memory was 311.6 MB in the beginning and 310.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,355 INFO L168 Benchmark]: Boogie Preprocessor took 20.17 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,356 INFO L168 Benchmark]: RCFGBuilder took 402.66 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 284.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,356 INFO L168 Benchmark]: TraceAbstraction took 3685.76 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 284.3 MB in the beginning and 174.7 MB in the end (delta: 109.6 MB). Peak memory consumption was 184.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:04:41,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 348.1 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 455.45 ms. Allocated memory is still 348.1 MB. Free memory was 311.0 MB in the beginning and 311.6 MB in the end (delta: -553.2 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.78 ms. Allocated memory is still 348.1 MB. Free memory was 311.6 MB in the beginning and 310.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.17 ms. Allocated memory is still 348.1 MB. Free memory was 310.5 MB in the beginning and 308.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 402.66 ms. Allocated memory is still 348.1 MB. Free memory was 308.4 MB in the beginning and 284.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3685.76 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 284.3 MB in the beginning and 174.7 MB in the end (delta: 109.6 MB). Peak memory consumption was 184.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1312.6ms, 68 PlacesBefore, 30 PlacesAfterwards, 59 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 984 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 517, positive: 485, positive conditional: 0, positive unconditional: 485, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 385, positive: 370, positive conditional: 0, positive unconditional: 370, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 385, positive: 370, positive conditional: 0, positive unconditional: 370, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 517, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 385, unknown conditional: 0, unknown unconditional: 385] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 295.7ms, 30 PlacesBefore, 27 PlacesAfterwards, 20 TransitionsBefore, 17 TransitionsAfterwards, 120 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 318 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 97, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 97, positive: 47, positive conditional: 0, positive unconditional: 47, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 467.6ms, 30 PlacesBefore, 29 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9ms, 28 PlacesBefore, 28 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 94 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 69 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.7ms, 31 PlacesBefore, 30 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 12, positive conditional: 0, positive unconditional: 12, 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: 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: 24, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.3ms, 31 PlacesBefore, 29 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 27 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27, positive: 23, positive conditional: 0, positive unconditional: 23, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 41.4ms, 35 PlacesBefore, 33 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 20 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 10, positive conditional: 0, positive unconditional: 10, 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: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 172.1ms, 38 PlacesBefore, 34 PlacesAfterwards, 21 TransitionsBefore, 19 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 6 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, 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: 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: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 28 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): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3552.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 331.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1420.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 17 SDs, 0 SdLazy, 122 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=7, InterpolantAutomatonStates: 36, 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: 19.1ms SsaConstructionTime, 169.0ms SatisfiabilityAnalysisTime, 382.4ms InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...