/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/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:09:25,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:09:25,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:09:25,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:09:25,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:09:25,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:09:25,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:09:25,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:09:25,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:09:25,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:09:25,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:09:25,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:09:25,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:09:25,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:09:25,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:09:25,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:09:25,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:09:25,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:09:25,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:09:25,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:09:25,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:09:25,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:09:25,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:09:25,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:09:25,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:09:25,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:09:25,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:09:25,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:09:25,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:09:25,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 05:09:25,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:09:25,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:09:25,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:09:25,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:09:25,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:09:25,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:09:25,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:09:25,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:09:25,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:09:25,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:09:25,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:09:25,216 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 05:09:25,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:09:25,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:09:25,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:09:25,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:09:25,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:09:25,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:09:25,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:09:25,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:09:25,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:09:25,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:09:25,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:09:25,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:09:25,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:09:25,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:09:25,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:09:25,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:09:25,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:09:25,546 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:09:25,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-25 05:09:25,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba40fcae/3fdab42eadb9400db82f943452b5fa94/FLAG118da375f [2021-03-25 05:09:26,160 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:09:26,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-25 05:09:26,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba40fcae/3fdab42eadb9400db82f943452b5fa94/FLAG118da375f [2021-03-25 05:09:26,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ba40fcae/3fdab42eadb9400db82f943452b5fa94 [2021-03-25 05:09:26,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:09:26,467 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:09:26,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:26,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:09:26,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:09:26,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:26" (1/1) ... [2021-03-25 05:09:26,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c7570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:26, skipping insertion in model container [2021-03-25 05:09:26,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:09:26" (1/1) ... [2021-03-25 05:09:26,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:09:26,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:09:26,714 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/safe030_tso.oepc.i[950,963] [2021-03-25 05:09:26,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:26,892 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:09:26,903 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/safe030_tso.oepc.i[950,963] [2021-03-25 05:09:26,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:09:27,009 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:09:27,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27 WrapperNode [2021-03-25 05:09:27,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:09:27,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:27,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:09:27,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:09:27,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:09:27,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:09:27,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:09:27,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:09:27,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (1/1) ... [2021-03-25 05:09:27,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:09:27,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:09:27,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:09:27,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:09:27,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (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 05:09:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:09:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:09:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:09:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:09:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:09:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:09:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:09:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:09:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:09:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:09:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:09:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:09:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:09:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:09:27,187 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 05:09:27,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:09:27,558 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:09:27,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:27 BoogieIcfgContainer [2021-03-25 05:09:27,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:09:27,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:09:27,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:09:27,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:09:27,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:09:26" (1/3) ... [2021-03-25 05:09:27,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5b8491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:27, skipping insertion in model container [2021-03-25 05:09:27,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:09:27" (2/3) ... [2021-03-25 05:09:27,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5b8491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:09:27, skipping insertion in model container [2021-03-25 05:09:27,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:09:27" (3/3) ... [2021-03-25 05:09:27,569 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-03-25 05:09:27,574 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:09:27,578 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:09:27,579 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:09:27,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,608 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,608 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,611 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,613 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,613 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,615 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,615 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,615 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,616 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,618 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,618 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,622 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,622 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:09:27,628 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:09:27,644 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:09:27,672 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:09:27,672 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:09:27,672 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:09:27,672 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:09:27,672 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:09:27,672 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:09:27,673 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:09:27,673 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:09:27,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:09:27,725 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-25 05:09:27,725 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:27,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:09:27,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-25 05:09:27,736 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:27,737 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:27,744 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:27,747 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:27,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-25 05:09:27,771 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-25 05:09:27,772 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:27,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:09:27,775 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:09:29,183 INFO L154 LiptonReduction]: Checked pairs total: 1207 [2021-03-25 05:09:29,183 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 05:09:29,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1450 [2021-03-25 05:09:29,198 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 05:09:29,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:29,199 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:29,199 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:29,200 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1494745171, now seen corresponding path program 1 times [2021-03-25 05:09:29,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:29,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641355175] [2021-03-25 05:09:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:29,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:29,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:29,410 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:29,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:29,426 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 05:09:29,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641355175] [2021-03-25 05:09:29,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:29,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:29,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338087462] [2021-03-25 05:09:29,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:29,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:29,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:29,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:29,451 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 111 [2021-03-25 05:09:29,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 05:09:29,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:29,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 111 [2021-03-25 05:09:29,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:29,528 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 05:09:29,528 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:29,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 214 events. 90/214 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 995 event pairs, 28 based on Foata normal form. 14/218 useless extension candidates. Maximal degree in co-relation 380. Up to 85 conditions per place. [2021-03-25 05:09:29,531 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 7 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-03-25 05:09:29,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2021-03-25 05:09:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2021-03-25 05:09:29,542 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-03-25 05:09:29,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2021-03-25 05:09:29,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2021-03-25 05:09:29,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:29,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2021-03-25 05:09:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 05:09:29,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 05:09:29,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 05:09:29,555 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 279 transitions. [2021-03-25 05:09:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2021-03-25 05:09:29,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:09:29,559 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:29,560 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 05:09:29,561 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 05:09:29,561 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:29,561 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:29,561 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:29,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 100 flow [2021-03-25 05:09:29,577 INFO L129 PetriNetUnfolder]: 90/214 cut-off events. [2021-03-25 05:09:29,577 INFO L130 PetriNetUnfolder]: For 25/33 co-relation queries the response was YES. [2021-03-25 05:09:29,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 214 events. 90/214 cut-off events. For 25/33 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1007 event pairs, 34 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 467. Up to 85 conditions per place. [2021-03-25 05:09:29,580 INFO L142 LiptonReduction]: Number of co-enabled transitions 172 [2021-03-25 05:09:30,037 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:09:30,266 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-03-25 05:09:30,327 INFO L154 LiptonReduction]: Checked pairs total: 204 [2021-03-25 05:09:30,328 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:09:30,328 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 767 [2021-03-25 05:09:30,329 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2021-03-25 05:09:30,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 05:09:30,329 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,329 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:09:30,330 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,330 INFO L82 PathProgramCache]: Analyzing trace with hash -59456381, now seen corresponding path program 1 times [2021-03-25 05:09:30,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011988337] [2021-03-25 05:09:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:30,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,386 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:30,394 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 05:09:30,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011988337] [2021-03-25 05:09:30,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:30,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18893881] [2021-03-25 05:09:30,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:30,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:30,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:30,409 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:30,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 05:09:30,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:30,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,455 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 05:09:30,455 INFO L130 PetriNetUnfolder]: For 43/112 co-relation queries the response was YES. [2021-03-25 05:09:30,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 184 events. 75/184 cut-off events. For 43/112 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 831 event pairs, 8 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 548. Up to 78 conditions per place. [2021-03-25 05:09:30,459 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-03-25 05:09:30,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 186 flow [2021-03-25 05:09:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:30,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2021-03-25 05:09:30,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8245614035087719 [2021-03-25 05:09:30,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2021-03-25 05:09:30,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2021-03-25 05:09:30,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:30,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2021-03-25 05:09:30,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 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 05:09:30,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:30,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:30,470 INFO L185 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 376 transitions. [2021-03-25 05:09:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 186 flow [2021-03-25 05:09:30,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:30,473 INFO L241 Difference]: Finished difference. Result has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:30,473 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2021-03-25 05:09:30,474 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-25 05:09:30,474 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:30,474 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:30,475 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:30,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:30,494 INFO L129 PetriNetUnfolder]: 75/184 cut-off events. [2021-03-25 05:09:30,495 INFO L130 PetriNetUnfolder]: For 120/145 co-relation queries the response was YES. [2021-03-25 05:09:30,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 184 events. 75/184 cut-off events. For 120/145 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 856 event pairs, 12 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 511. Up to 78 conditions per place. [2021-03-25 05:09:30,499 INFO L142 LiptonReduction]: Number of co-enabled transitions 176 [2021-03-25 05:09:30,505 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-25 05:09:30,505 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:30,505 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 05:09:30,507 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 164 flow [2021-03-25 05:09:30,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 05:09:30,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:09:30,507 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,508 INFO L82 PathProgramCache]: Analyzing trace with hash 893337386, now seen corresponding path program 1 times [2021-03-25 05:09:30,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585958345] [2021-03-25 05:09:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,599 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 05:09:30,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585958345] [2021-03-25 05:09:30,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:09:30,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043046669] [2021-03-25 05:09:30,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:30,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:30,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:30,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 05:09:30,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:09:30,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 05:09:30,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,635 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 05:09:30,635 INFO L130 PetriNetUnfolder]: For 157/178 co-relation queries the response was YES. [2021-03-25 05:09:30,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 164 events. 64/164 cut-off events. For 157/178 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 720 event pairs, 9 based on Foata normal form. 3/164 useless extension candidates. Maximal degree in co-relation 502. Up to 72 conditions per place. [2021-03-25 05:09:30,638 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 7 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2021-03-25 05:09:30,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 228 flow [2021-03-25 05:09:30,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 05:09:30,639 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8801169590643275 [2021-03-25 05:09:30,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:30,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:09:30,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:30,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:30,644 INFO L185 Difference]: Start difference. First operand has 32 places, 30 transitions, 164 flow. Second operand 3 states and 301 transitions. [2021-03-25 05:09:30,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 228 flow [2021-03-25 05:09:30,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:30,650 INFO L241 Difference]: Finished difference. Result has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:30,651 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2021-03-25 05:09:30,651 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 05:09:30,651 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:30,651 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:30,652 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:30,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:30,670 INFO L129 PetriNetUnfolder]: 64/164 cut-off events. [2021-03-25 05:09:30,670 INFO L130 PetriNetUnfolder]: For 163/190 co-relation queries the response was YES. [2021-03-25 05:09:30,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 164 events. 64/164 cut-off events. For 163/190 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 743 event pairs, 7 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 513. Up to 72 conditions per place. [2021-03-25 05:09:30,673 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-25 05:09:30,680 INFO L154 LiptonReduction]: Checked pairs total: 112 [2021-03-25 05:09:30,680 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:30,680 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:09:30,682 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 235 flow [2021-03-25 05:09:30,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:09:30,682 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,682 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:09:30,683 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1771849024, now seen corresponding path program 1 times [2021-03-25 05:09:30,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850953728] [2021-03-25 05:09:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,752 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 05:09:30,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850953728] [2021-03-25 05:09:30,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:09:30,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505632349] [2021-03-25 05:09:30,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:30,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:30,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:30,755 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 05:09:30,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:09:30,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 05:09:30,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,773 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 05:09:30,773 INFO L130 PetriNetUnfolder]: For 205/233 co-relation queries the response was YES. [2021-03-25 05:09:30,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 151 events. 57/151 cut-off events. For 205/233 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 647 event pairs, 3 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 519. Up to 67 conditions per place. [2021-03-25 05:09:30,774 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 5 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2021-03-25 05:09:30,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 281 flow [2021-03-25 05:09:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-03-25 05:09:30,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8801169590643275 [2021-03-25 05:09:30,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:30,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-03-25 05:09:30,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:09:30,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:30,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:30,779 INFO L185 Difference]: Start difference. First operand has 35 places, 36 transitions, 235 flow. Second operand 3 states and 301 transitions. [2021-03-25 05:09:30,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 281 flow [2021-03-25 05:09:30,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:30,783 INFO L241 Difference]: Finished difference. Result has 37 places, 40 transitions, 280 flow [2021-03-25 05:09:30,783 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2021-03-25 05:09:30,783 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2021-03-25 05:09:30,783 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:30,783 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 40 transitions, 280 flow [2021-03-25 05:09:30,784 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 40 transitions, 280 flow [2021-03-25 05:09:30,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 40 transitions, 280 flow [2021-03-25 05:09:30,804 INFO L129 PetriNetUnfolder]: 57/151 cut-off events. [2021-03-25 05:09:30,804 INFO L130 PetriNetUnfolder]: For 198/228 co-relation queries the response was YES. [2021-03-25 05:09:30,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 151 events. 57/151 cut-off events. For 198/228 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 645 event pairs, 4 based on Foata normal form. 2/151 useless extension candidates. Maximal degree in co-relation 519. Up to 67 conditions per place. [2021-03-25 05:09:30,806 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 05:09:30,812 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-25 05:09:30,812 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:30,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:09:30,812 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 280 flow [2021-03-25 05:09:30,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 05:09:30,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,813 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:09:30,813 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1926692910, now seen corresponding path program 1 times [2021-03-25 05:09:30,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214689629] [2021-03-25 05:09:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:30,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:30,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:30,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:30,883 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:30,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:30,891 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 05:09:30,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214689629] [2021-03-25 05:09:30,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:30,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:30,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966362602] [2021-03-25 05:09:30,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:30,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:30,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:30,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:30,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:30,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 05:09:30,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:30,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:30,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:30,932 INFO L129 PetriNetUnfolder]: 54/162 cut-off events. [2021-03-25 05:09:30,932 INFO L130 PetriNetUnfolder]: For 229/301 co-relation queries the response was YES. [2021-03-25 05:09:30,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 162 events. 54/162 cut-off events. For 229/301 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 766 event pairs, 2 based on Foata normal form. 14/174 useless extension candidates. Maximal degree in co-relation 665. Up to 74 conditions per place. [2021-03-25 05:09:30,933 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 20 changer transitions 2/45 dead transitions. [2021-03-25 05:09:30,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 394 flow [2021-03-25 05:09:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:09:30,936 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 05:09:30,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:09:30,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:09:30,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:30,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:09:30,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 05:09:30,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:30,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:30,939 INFO L185 Difference]: Start difference. First operand has 37 places, 40 transitions, 280 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:09:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 394 flow [2021-03-25 05:09:30,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:30,943 INFO L241 Difference]: Finished difference. Result has 42 places, 41 transitions, 374 flow [2021-03-25 05:09:30,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2021-03-25 05:09:30,943 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-03-25 05:09:30,943 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:30,943 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 41 transitions, 374 flow [2021-03-25 05:09:30,943 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 41 transitions, 374 flow [2021-03-25 05:09:30,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 374 flow [2021-03-25 05:09:30,958 INFO L129 PetriNetUnfolder]: 52/160 cut-off events. [2021-03-25 05:09:30,959 INFO L130 PetriNetUnfolder]: For 493/539 co-relation queries the response was YES. [2021-03-25 05:09:30,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 160 events. 52/160 cut-off events. For 493/539 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 762 event pairs, 4 based on Foata normal form. 3/161 useless extension candidates. Maximal degree in co-relation 673. Up to 72 conditions per place. [2021-03-25 05:09:30,961 INFO L142 LiptonReduction]: Number of co-enabled transitions 212 [2021-03-25 05:09:30,965 INFO L154 LiptonReduction]: Checked pairs total: 127 [2021-03-25 05:09:30,965 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:30,965 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 05:09:30,966 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 374 flow [2021-03-25 05:09:30,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 05:09:30,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:30,967 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:30,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:09:30,967 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash -512179021, now seen corresponding path program 1 times [2021-03-25 05:09:30,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:30,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341834344] [2021-03-25 05:09:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,021 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:31,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:31,027 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 05:09:31,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341834344] [2021-03-25 05:09:31,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:31,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046456207] [2021-03-25 05:09:31,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:31,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:31,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:31,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 05:09:31,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 374 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 05:09:31,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 05:09:31,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,093 INFO L129 PetriNetUnfolder]: 127/333 cut-off events. [2021-03-25 05:09:31,094 INFO L130 PetriNetUnfolder]: For 904/1002 co-relation queries the response was YES. [2021-03-25 05:09:31,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 333 events. 127/333 cut-off events. For 904/1002 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2057 event pairs, 28 based on Foata normal form. 36/350 useless extension candidates. Maximal degree in co-relation 1096. Up to 165 conditions per place. [2021-03-25 05:09:31,096 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2021-03-25 05:09:31,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 426 flow [2021-03-25 05:09:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-25 05:09:31,098 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-25 05:09:31,098 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-25 05:09:31,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-25 05:09:31,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-25 05:09:31,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 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 05:09:31,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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 05:09:31,101 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 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 05:09:31,102 INFO L185 Difference]: Start difference. First operand has 42 places, 41 transitions, 374 flow. Second operand 5 states and 443 transitions. [2021-03-25 05:09:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 426 flow [2021-03-25 05:09:31,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 424 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-25 05:09:31,105 INFO L241 Difference]: Finished difference. Result has 49 places, 48 transitions, 432 flow [2021-03-25 05:09:31,105 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2021-03-25 05:09:31,106 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2021-03-25 05:09:31,106 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,106 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 48 transitions, 432 flow [2021-03-25 05:09:31,106 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 48 transitions, 432 flow [2021-03-25 05:09:31,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 48 transitions, 432 flow [2021-03-25 05:09:31,132 INFO L129 PetriNetUnfolder]: 126/334 cut-off events. [2021-03-25 05:09:31,132 INFO L130 PetriNetUnfolder]: For 1019/1125 co-relation queries the response was YES. [2021-03-25 05:09:31,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 334 events. 126/334 cut-off events. For 1019/1125 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2139 event pairs, 30 based on Foata normal form. 22/341 useless extension candidates. Maximal degree in co-relation 1280. Up to 185 conditions per place. [2021-03-25 05:09:31,137 INFO L142 LiptonReduction]: Number of co-enabled transitions 372 [2021-03-25 05:09:31,146 INFO L154 LiptonReduction]: Checked pairs total: 30 [2021-03-25 05:09:31,146 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:09:31,146 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 40 [2021-03-25 05:09:31,149 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 426 flow [2021-03-25 05:09:31,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 05:09:31,149 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,149 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:09:31,149 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,150 INFO L82 PathProgramCache]: Analyzing trace with hash -43966269, now seen corresponding path program 1 times [2021-03-25 05:09:31,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080239099] [2021-03-25 05:09:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:31,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,198 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:09:31,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:09:31,207 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 05:09:31,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080239099] [2021-03-25 05:09:31,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591499010] [2021-03-25 05:09:31,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:09:31,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:09:31,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:09:31,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 114 [2021-03-25 05:09:31,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 05:09:31,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 114 [2021-03-25 05:09:31,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,263 INFO L129 PetriNetUnfolder]: 135/344 cut-off events. [2021-03-25 05:09:31,263 INFO L130 PetriNetUnfolder]: For 1141/1254 co-relation queries the response was YES. [2021-03-25 05:09:31,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 344 events. 135/344 cut-off events. For 1141/1254 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2033 event pairs, 41 based on Foata normal form. 28/352 useless extension candidates. Maximal degree in co-relation 1424. Up to 216 conditions per place. [2021-03-25 05:09:31,266 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 14 selfloop transitions, 20 changer transitions 3/49 dead transitions. [2021-03-25 05:09:31,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 538 flow [2021-03-25 05:09:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:09:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:09:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:09:31,268 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8223684210526315 [2021-03-25 05:09:31,268 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:09:31,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:09:31,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:09:31,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 05:09:31,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:31,270 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:09:31,270 INFO L185 Difference]: Start difference. First operand has 49 places, 47 transitions, 426 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:09:31,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 538 flow [2021-03-25 05:09:31,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 532 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:09:31,277 INFO L241 Difference]: Finished difference. Result has 51 places, 44 transitions, 496 flow [2021-03-25 05:09:31,278 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=496, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2021-03-25 05:09:31,278 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2021-03-25 05:09:31,278 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,278 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 44 transitions, 496 flow [2021-03-25 05:09:31,278 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 44 transitions, 496 flow [2021-03-25 05:09:31,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 44 transitions, 496 flow [2021-03-25 05:09:31,307 INFO L129 PetriNetUnfolder]: 132/340 cut-off events. [2021-03-25 05:09:31,307 INFO L130 PetriNetUnfolder]: For 1230/1316 co-relation queries the response was YES. [2021-03-25 05:09:31,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 340 events. 132/340 cut-off events. For 1230/1316 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2074 event pairs, 40 based on Foata normal form. 2/321 useless extension candidates. Maximal degree in co-relation 1385. Up to 217 conditions per place. [2021-03-25 05:09:31,312 INFO L142 LiptonReduction]: Number of co-enabled transitions 242 [2021-03-25 05:09:31,315 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:31,315 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,315 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 05:09:31,317 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 496 flow [2021-03-25 05:09:31,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 05:09:31,317 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,317 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:09:31,318 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1137926189, now seen corresponding path program 1 times [2021-03-25 05:09:31,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457679275] [2021-03-25 05:09:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:09:31,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,362 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 05:09:31,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457679275] [2021-03-25 05:09:31,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:09:31,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17694652] [2021-03-25 05:09:31,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:09:31,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:09:31,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:09:31,365 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 114 [2021-03-25 05:09:31,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 496 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 05:09:31,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 114 [2021-03-25 05:09:31,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,414 INFO L129 PetriNetUnfolder]: 169/424 cut-off events. [2021-03-25 05:09:31,414 INFO L130 PetriNetUnfolder]: For 1459/1524 co-relation queries the response was YES. [2021-03-25 05:09:31,415 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 424 events. 169/424 cut-off events. For 1459/1524 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2718 event pairs, 62 based on Foata normal form. 13/408 useless extension candidates. Maximal degree in co-relation 1672. Up to 299 conditions per place. [2021-03-25 05:09:31,417 INFO L132 encePairwiseOnDemand]: 111/114 looper letters, 5 selfloop transitions, 7 changer transitions 5/44 dead transitions. [2021-03-25 05:09:31,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 526 flow [2021-03-25 05:09:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:09:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:09:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2021-03-25 05:09:31,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8771929824561403 [2021-03-25 05:09:31,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2021-03-25 05:09:31,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2021-03-25 05:09:31,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2021-03-25 05:09:31,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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 05:09:31,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:31,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:09:31,420 INFO L185 Difference]: Start difference. First operand has 51 places, 44 transitions, 496 flow. Second operand 3 states and 300 transitions. [2021-03-25 05:09:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 526 flow [2021-03-25 05:09:31,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 44 transitions, 505 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:09:31,427 INFO L241 Difference]: Finished difference. Result has 53 places, 39 transitions, 427 flow [2021-03-25 05:09:31,427 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2021-03-25 05:09:31,427 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2021-03-25 05:09:31,428 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,428 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 39 transitions, 427 flow [2021-03-25 05:09:31,428 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 39 transitions, 427 flow [2021-03-25 05:09:31,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 39 transitions, 427 flow [2021-03-25 05:09:31,474 INFO L129 PetriNetUnfolder]: 161/410 cut-off events. [2021-03-25 05:09:31,474 INFO L130 PetriNetUnfolder]: For 1285/1373 co-relation queries the response was YES. [2021-03-25 05:09:31,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 410 events. 161/410 cut-off events. For 1285/1373 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2660 event pairs, 61 based on Foata normal form. 4/387 useless extension candidates. Maximal degree in co-relation 1543. Up to 297 conditions per place. [2021-03-25 05:09:31,479 INFO L142 LiptonReduction]: Number of co-enabled transitions 210 [2021-03-25 05:09:31,482 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:31,482 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,482 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-25 05:09:31,486 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 427 flow [2021-03-25 05:09:31,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 05:09:31,487 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,487 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:09:31,487 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2070188735, now seen corresponding path program 1 times [2021-03-25 05:09:31,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640585459] [2021-03-25 05:09:31,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,527 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:31,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:31,533 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 05:09:31,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640585459] [2021-03-25 05:09:31,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:09:31,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144439711] [2021-03-25 05:09:31,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:09:31,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:09:31,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:09:31,535 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-25 05:09:31,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 05:09:31,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-25 05:09:31,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,609 INFO L129 PetriNetUnfolder]: 128/372 cut-off events. [2021-03-25 05:09:31,609 INFO L130 PetriNetUnfolder]: For 1343/1573 co-relation queries the response was YES. [2021-03-25 05:09:31,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 372 events. 128/372 cut-off events. For 1343/1573 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 2497 event pairs, 11 based on Foata normal form. 81/441 useless extension candidates. Maximal degree in co-relation 1589. Up to 285 conditions per place. [2021-03-25 05:09:31,612 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 7 changer transitions 18/49 dead transitions. [2021-03-25 05:09:31,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 523 flow [2021-03-25 05:09:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:09:31,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:09:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2021-03-25 05:09:31,614 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2021-03-25 05:09:31,614 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2021-03-25 05:09:31,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2021-03-25 05:09:31,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2021-03-25 05:09:31,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 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 05:09:31,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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 05:09:31,617 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 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 05:09:31,617 INFO L185 Difference]: Start difference. First operand has 53 places, 39 transitions, 427 flow. Second operand 6 states and 531 transitions. [2021-03-25 05:09:31,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 523 flow [2021-03-25 05:09:31,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 462 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 05:09:31,623 INFO L241 Difference]: Finished difference. Result has 57 places, 31 transitions, 332 flow [2021-03-25 05:09:31,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2021-03-25 05:09:31,623 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2021-03-25 05:09:31,623 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,624 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 31 transitions, 332 flow [2021-03-25 05:09:31,624 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 31 transitions, 332 flow [2021-03-25 05:09:31,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 31 transitions, 332 flow [2021-03-25 05:09:31,634 INFO L129 PetriNetUnfolder]: 25/96 cut-off events. [2021-03-25 05:09:31,634 INFO L130 PetriNetUnfolder]: For 393/453 co-relation queries the response was YES. [2021-03-25 05:09:31,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 96 events. 25/96 cut-off events. For 393/453 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 389 event pairs, 3 based on Foata normal form. 5/98 useless extension candidates. Maximal degree in co-relation 470. Up to 65 conditions per place. [2021-03-25 05:09:31,636 INFO L142 LiptonReduction]: Number of co-enabled transitions 118 [2021-03-25 05:09:31,714 INFO L154 LiptonReduction]: Checked pairs total: 6 [2021-03-25 05:09:31,714 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:09:31,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 91 [2021-03-25 05:09:31,714 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 30 transitions, 330 flow [2021-03-25 05:09:31,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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 05:09:31,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:09:31,715 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:09:31,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:09:31,715 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:09:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:09:31,715 INFO L82 PathProgramCache]: Analyzing trace with hash -799797610, now seen corresponding path program 1 times [2021-03-25 05:09:31,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:09:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315962940] [2021-03-25 05:09:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:09:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:09:31,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:09:31,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:09:31,773 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:09:31,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:09:31,781 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 05:09:31,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315962940] [2021-03-25 05:09:31,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:09:31,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:09:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62305092] [2021-03-25 05:09:31,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:09:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:09:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:09:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:09:31,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2021-03-25 05:09:31,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 30 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 05:09:31,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:09:31,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2021-03-25 05:09:31,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:09:31,809 INFO L129 PetriNetUnfolder]: 16/65 cut-off events. [2021-03-25 05:09:31,810 INFO L130 PetriNetUnfolder]: For 458/610 co-relation queries the response was YES. [2021-03-25 05:09:31,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 65 events. 16/65 cut-off events. For 458/610 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 228 event pairs, 0 based on Foata normal form. 43/105 useless extension candidates. Maximal degree in co-relation 370. Up to 40 conditions per place. [2021-03-25 05:09:31,810 INFO L132 encePairwiseOnDemand]: 110/115 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2021-03-25 05:09:31,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 29 transitions, 324 flow [2021-03-25 05:09:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:09:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:09:31,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2021-03-25 05:09:31,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7582608695652174 [2021-03-25 05:09:31,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2021-03-25 05:09:31,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2021-03-25 05:09:31,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:09:31,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2021-03-25 05:09:31,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 05:09:31,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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 05:09:31,815 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 115.0) internal successors, (690), 6 states have internal predecessors, (690), 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 05:09:31,815 INFO L185 Difference]: Start difference. First operand has 54 places, 30 transitions, 330 flow. Second operand 5 states and 436 transitions. [2021-03-25 05:09:31,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 29 transitions, 324 flow [2021-03-25 05:09:31,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 29 transitions, 218 flow, removed 12 selfloop flow, removed 12 redundant places. [2021-03-25 05:09:31,818 INFO L241 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-03-25 05:09:31,819 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-03-25 05:09:31,819 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2021-03-25 05:09:31,819 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:09:31,819 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-25 05:09:31,819 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-25 05:09:31,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:09:31,819 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:09:31,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:09:31,820 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 05:09:31,820 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:09:31,820 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:09:31,820 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:09:31,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:09:31,821 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:09:31,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 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 05:09:31,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:09:31,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:09:31 BasicIcfg [2021-03-25 05:09:31,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:09:31,825 INFO L168 Benchmark]: Toolchain (without parser) took 5358.42 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 310.9 MB in the beginning and 308.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,826 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:09:31,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.86 ms. Allocated memory is still 348.1 MB. Free memory was 310.7 MB in the beginning and 310.1 MB in the end (delta: 649.1 kB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.47 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 308.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,826 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 ms. Allocated memory is still 348.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,826 INFO L168 Benchmark]: RCFGBuilder took 458.67 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 283.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,827 INFO L168 Benchmark]: TraceAbstraction took 4261.46 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 282.8 MB in the beginning and 308.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:09:31,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 348.1 MB. Free memory was 329.2 MB in the beginning and 329.1 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 545.86 ms. Allocated memory is still 348.1 MB. Free memory was 310.7 MB in the beginning and 310.1 MB in the end (delta: 649.1 kB). Peak memory consumption was 8.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 55.47 ms. Allocated memory is still 348.1 MB. Free memory was 310.1 MB in the beginning and 308.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.78 ms. Allocated memory is still 348.1 MB. Free memory was 308.0 MB in the beginning and 306.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 458.67 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 283.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4261.46 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 282.8 MB in the beginning and 308.9 MB in the end (delta: -26.1 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1436.5ms, 67 PlacesBefore, 30 PlacesAfterwards, 58 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 647, positive: 605, positive conditional: 0, positive unconditional: 605, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 431, positive: 410, positive conditional: 0, positive unconditional: 410, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 431, positive: 410, positive conditional: 0, positive unconditional: 410, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 647, positive: 195, positive conditional: 0, positive unconditional: 195, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 431, unknown conditional: 0, unknown unconditional: 431] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 766.3ms, 31 PlacesBefore, 28 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 172 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 204 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 114, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 114, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.3ms, 32 PlacesBefore, 32 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 5, negative conditional: 0, negative unconditional: 5, 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: 44, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.4ms, 35 PlacesBefore, 35 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 43, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.8ms, 37 PlacesBefore, 37 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 208 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 47, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.0ms, 42 PlacesBefore, 42 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 212 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 127 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 39.4ms, 49 PlacesBefore, 49 PlacesAfterwards, 48 TransitionsBefore, 47 TransitionsAfterwards, 372 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 30 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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: 30, positive: 30, positive conditional: 0, positive unconditional: 30, 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.1ms, 51 PlacesBefore, 51 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 242 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.0ms, 53 PlacesBefore, 53 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 210 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): 46, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 90.1ms, 57 PlacesBefore, 54 PlacesAfterwards, 31 TransitionsBefore, 30 TransitionsAfterwards, 118 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 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: 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] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.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] , Cache Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 45 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): 42, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4155.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 650.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1517.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 17 SDslu, 25 SDs, 0 SdLazy, 104 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 90.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=496occurred in iteration=7, InterpolantAutomatonStates: 40, 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: 25.2ms SsaConstructionTime, 172.7ms SatisfiabilityAnalysisTime, 466.6ms InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...