/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:41:57,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:41:57,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:41:57,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:41:57,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:41:57,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:41:57,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:41:57,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:41:57,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:41:57,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:41:57,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:41:57,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:41:57,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:41:57,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:41:57,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:41:57,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:41:57,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:41:57,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:41:57,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:41:57,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:41:57,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:41:57,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:41:57,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:41:57,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:41:57,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 10:41:57,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:41:57,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:41:57,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:41:57,374 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 10:41:57,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:41:57,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:41:57,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:41:57,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:41:57,419 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:41:57,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:41:57,419 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:41:57,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:41:57,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:41:57,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:41:57,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:41:57,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:41:57,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:41:57,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:41:57,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:41:57,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:41:57,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:41:57,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:41:57,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:41:57,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:41:57,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:41:57,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:41:57,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:41:57,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:41:57,772 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:41:57,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2021-03-26 10:41:57,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493edb2ae/8ac2c511cde5455cb0e95079a43d2f20/FLAGccac5b81c [2021-03-26 10:41:58,340 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:41:58,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2021-03-26 10:41:58,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493edb2ae/8ac2c511cde5455cb0e95079a43d2f20/FLAGccac5b81c [2021-03-26 10:41:58,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/493edb2ae/8ac2c511cde5455cb0e95079a43d2f20 [2021-03-26 10:41:58,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:41:58,682 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:41:58,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:41:58,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:41:58,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:41:58,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:41:58" (1/1) ... [2021-03-26 10:41:58,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c14160a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:58, skipping insertion in model container [2021-03-26 10:41:58,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:41:58" (1/1) ... [2021-03-26 10:41:58,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:41:58,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:41:58,847 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/safe031_tso.opt.i[949,962] [2021-03-26 10:41:59,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:41:59,030 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:41:59,043 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/safe031_tso.opt.i[949,962] [2021-03-26 10:41:59,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:41:59,154 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:41:59,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59 WrapperNode [2021-03-26 10:41:59,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:41:59,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:41:59,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:41:59,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:41:59,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:41:59,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:41:59,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:41:59,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:41:59,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (1/1) ... [2021-03-26 10:41:59,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:41:59,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:41:59,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:41:59,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:41:59,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (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 [2021-03-26 10:41:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:41:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:41:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:41:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:41:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:41:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:41:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:41:59,291 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:41:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 10:41:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 10:41:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:41:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:41:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:41:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:41:59,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 10:41:59,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:41:59,624 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:41:59,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:41:59 BoogieIcfgContainer [2021-03-26 10:41:59,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:41:59,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:41:59,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:41:59,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:41:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:41:58" (1/3) ... [2021-03-26 10:41:59,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180bd69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:41:59, skipping insertion in model container [2021-03-26 10:41:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:41:59" (2/3) ... [2021-03-26 10:41:59,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180bd69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:41:59, skipping insertion in model container [2021-03-26 10:41:59,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:41:59" (3/3) ... [2021-03-26 10:41:59,634 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2021-03-26 10:41:59,639 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:41:59,643 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:41:59,644 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:41:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,679 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,679 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,681 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,682 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,683 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,684 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,685 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,685 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,685 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,686 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,686 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,687 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,688 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,690 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,690 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,691 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:41:59,705 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:41:59,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 10:41:59,749 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:41:59,749 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:41:59,749 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:41:59,750 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:41:59,750 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:41:59,750 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:41:59,750 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:41:59,750 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:41:59,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-26 10:41:59,811 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-26 10:41:59,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:41:59,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 10:41:59,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-26 10:41:59,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-26 10:41:59,827 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:41:59,844 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-26 10:41:59,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-26 10:41:59,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-26 10:41:59,873 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-26 10:41:59,873 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:41:59,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 10:41:59,876 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 10:42:01,174 INFO L154 LiptonReduction]: Checked pairs total: 1194 [2021-03-26 10:42:01,174 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-26 10:42:01,176 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1350 [2021-03-26 10:42:01,185 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 10:42:01,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:42:01,185 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:01,186 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:01,186 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:01,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:01,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2108135213, now seen corresponding path program 1 times [2021-03-26 10:42:01,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:01,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315132237] [2021-03-26 10:42:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:01,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:01,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:01,380 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:42:01,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:42:01,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:01,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:01,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315132237] [2021-03-26 10:42:01,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:01,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:42:01,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020735579] [2021-03-26 10:42:01,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:42:01,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:01,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:42:01,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:42:01,433 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2021-03-26 10:42:01,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2021-03-26 10:42:01,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:01,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2021-03-26 10:42:01,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:01,509 INFO L129 PetriNetUnfolder]: 119/279 cut-off events. [2021-03-26 10:42:01,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:42:01,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 279 events. 119/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1473 event pairs, 30 based on Foata normal form. 27/299 useless extension candidates. Maximal degree in co-relation 500. Up to 96 conditions per place. [2021-03-26 10:42:01,512 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 8 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-26 10:42:01,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 135 flow [2021-03-26 10:42:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:42:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:42:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2021-03-26 10:42:01,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7842105263157895 [2021-03-26 10:42:01,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2021-03-26 10:42:01,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2021-03-26 10:42:01,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:01,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2021-03-26 10:42:01,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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) [2021-03-26 10:42:01,551 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) [2021-03-26 10:42:01,551 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) [2021-03-26 10:42:01,553 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 447 transitions. [2021-03-26 10:42:01,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 135 flow [2021-03-26 10:42:01,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 10:42:01,557 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-26 10:42:01,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-26 10:42:01,560 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-26 10:42:01,560 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:01,560 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-26 10:42:01,561 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-26 10:42:01,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 108 flow [2021-03-26 10:42:01,588 INFO L129 PetriNetUnfolder]: 66/191 cut-off events. [2021-03-26 10:42:01,589 INFO L130 PetriNetUnfolder]: For 85/87 co-relation queries the response was YES. [2021-03-26 10:42:01,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 191 events. 66/191 cut-off events. For 85/87 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 995 event pairs, 18 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 448. Up to 75 conditions per place. [2021-03-26 10:42:01,595 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-26 10:42:02,003 INFO L154 LiptonReduction]: Checked pairs total: 132 [2021-03-26 10:42:02,003 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 10:42:02,004 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 444 [2021-03-26 10:42:02,005 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 104 flow [2021-03-26 10:42:02,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2021-03-26 10:42:02,005 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:02,005 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:02,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:42:02,006 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:02,006 INFO L82 PathProgramCache]: Analyzing trace with hash -927709485, now seen corresponding path program 1 times [2021-03-26 10:42:02,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:02,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79830276] [2021-03-26 10:42:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:02,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:02,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:02,103 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:42:02,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:42:02,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:02,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79830276] [2021-03-26 10:42:02,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:02,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:42:02,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935148390] [2021-03-26 10:42:02,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:02,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:02,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:02,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:02,125 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 116 [2021-03-26 10:42:02,125 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2021-03-26 10:42:02,125 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:02,125 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 116 [2021-03-26 10:42:02,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:02,211 INFO L129 PetriNetUnfolder]: 84/223 cut-off events. [2021-03-26 10:42:02,212 INFO L130 PetriNetUnfolder]: For 213/257 co-relation queries the response was YES. [2021-03-26 10:42:02,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 223 events. 84/223 cut-off events. For 213/257 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1136 event pairs, 8 based on Foata normal form. 19/238 useless extension candidates. Maximal degree in co-relation 717. Up to 82 conditions per place. [2021-03-26 10:42:02,214 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 10 selfloop transitions, 10 changer transitions 12/43 dead transitions. [2021-03-26 10:42:02,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 280 flow [2021-03-26 10:42:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:42:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:42:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2021-03-26 10:42:02,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7647783251231527 [2021-03-26 10:42:02,221 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2021-03-26 10:42:02,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2021-03-26 10:42:02,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:02,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2021-03-26 10:42:02,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 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) [2021-03-26 10:42:02,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:02,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:02,227 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 104 flow. Second operand 7 states and 621 transitions. [2021-03-26 10:42:02,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 280 flow [2021-03-26 10:42:02,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:42:02,231 INFO L241 Difference]: Finished difference. Result has 41 places, 29 transitions, 164 flow [2021-03-26 10:42:02,231 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2021-03-26 10:42:02,232 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-26 10:42:02,232 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:02,232 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 29 transitions, 164 flow [2021-03-26 10:42:02,233 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 29 transitions, 164 flow [2021-03-26 10:42:02,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 29 transitions, 164 flow [2021-03-26 10:42:02,252 INFO L129 PetriNetUnfolder]: 57/155 cut-off events. [2021-03-26 10:42:02,253 INFO L130 PetriNetUnfolder]: For 305/315 co-relation queries the response was YES. [2021-03-26 10:42:02,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 155 events. 57/155 cut-off events. For 305/315 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 752 event pairs, 13 based on Foata normal form. 4/154 useless extension candidates. Maximal degree in co-relation 486. Up to 62 conditions per place. [2021-03-26 10:42:02,256 INFO L142 LiptonReduction]: Number of co-enabled transitions 178 [2021-03-26 10:42:02,418 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 10:42:02,659 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-26 10:42:02,732 INFO L154 LiptonReduction]: Checked pairs total: 268 [2021-03-26 10:42:02,732 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:42:02,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 500 [2021-03-26 10:42:02,733 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 162 flow [2021-03-26 10:42:02,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2021-03-26 10:42:02,734 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:02,734 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:02,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:42:02,734 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:02,734 INFO L82 PathProgramCache]: Analyzing trace with hash 764436550, now seen corresponding path program 1 times [2021-03-26 10:42:02,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:02,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299047452] [2021-03-26 10:42:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:02,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:02,775 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:42:02,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:42:02,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:02,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299047452] [2021-03-26 10:42:02,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:02,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:42:02,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762775893] [2021-03-26 10:42:02,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:02,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:02,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:02,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:02,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 117 [2021-03-26 10:42:02,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2021-03-26 10:42:02,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:02,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 117 [2021-03-26 10:42:02,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:02,853 INFO L129 PetriNetUnfolder]: 69/199 cut-off events. [2021-03-26 10:42:02,853 INFO L130 PetriNetUnfolder]: For 703/762 co-relation queries the response was YES. [2021-03-26 10:42:02,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 199 events. 69/199 cut-off events. For 703/762 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1034 event pairs, 10 based on Foata normal form. 28/225 useless extension candidates. Maximal degree in co-relation 741. Up to 70 conditions per place. [2021-03-26 10:42:02,856 INFO L132 encePairwiseOnDemand]: 109/117 looper letters, 12 selfloop transitions, 12 changer transitions 13/47 dead transitions. [2021-03-26 10:42:02,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 369 flow [2021-03-26 10:42:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:42:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:42:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2021-03-26 10:42:02,858 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7557997557997558 [2021-03-26 10:42:02,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2021-03-26 10:42:02,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2021-03-26 10:42:02,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:02,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2021-03-26 10:42:02,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 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) [2021-03-26 10:42:02,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-26 10:42:02,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-26 10:42:02,862 INFO L185 Difference]: Start difference. First operand has 37 places, 28 transitions, 162 flow. Second operand 7 states and 619 transitions. [2021-03-26 10:42:02,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 369 flow [2021-03-26 10:42:02,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 349 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-26 10:42:02,868 INFO L241 Difference]: Finished difference. Result has 46 places, 33 transitions, 250 flow [2021-03-26 10:42:02,869 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2021-03-26 10:42:02,869 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2021-03-26 10:42:02,869 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:02,869 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 33 transitions, 250 flow [2021-03-26 10:42:02,870 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 33 transitions, 250 flow [2021-03-26 10:42:02,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 33 transitions, 250 flow [2021-03-26 10:42:02,882 INFO L129 PetriNetUnfolder]: 45/137 cut-off events. [2021-03-26 10:42:02,882 INFO L130 PetriNetUnfolder]: For 389/401 co-relation queries the response was YES. [2021-03-26 10:42:02,883 INFO L84 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 137 events. 45/137 cut-off events. For 389/401 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 640 event pairs, 10 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 500. Up to 53 conditions per place. [2021-03-26 10:42:02,884 INFO L142 LiptonReduction]: Number of co-enabled transitions 196 [2021-03-26 10:42:02,888 INFO L154 LiptonReduction]: Checked pairs total: 146 [2021-03-26 10:42:02,889 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:42:02,889 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-26 10:42:02,891 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 250 flow [2021-03-26 10:42:02,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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) [2021-03-26 10:42:02,892 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:02,892 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:02,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:42:02,892 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:02,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:02,893 INFO L82 PathProgramCache]: Analyzing trace with hash 354712686, now seen corresponding path program 1 times [2021-03-26 10:42:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:02,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608903494] [2021-03-26 10:42:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:02,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:02,966 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:42:02,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:42:02,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:02,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:02,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608903494] [2021-03-26 10:42:02,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:02,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:42:02,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158529634] [2021-03-26 10:42:02,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:42:02,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:02,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:42:02,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:42:02,976 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 117 [2021-03-26 10:42:02,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 250 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) [2021-03-26 10:42:02,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:02,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 117 [2021-03-26 10:42:02,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:03,052 INFO L129 PetriNetUnfolder]: 130/323 cut-off events. [2021-03-26 10:42:03,052 INFO L130 PetriNetUnfolder]: For 841/897 co-relation queries the response was YES. [2021-03-26 10:42:03,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 323 events. 130/323 cut-off events. For 841/897 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1881 event pairs, 35 based on Foata normal form. 53/361 useless extension candidates. Maximal degree in co-relation 1000. Up to 165 conditions per place. [2021-03-26 10:42:03,059 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 8 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2021-03-26 10:42:03,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 302 flow [2021-03-26 10:42:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:42:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:42:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-26 10:42:03,064 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7572649572649572 [2021-03-26 10:42:03,064 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-26 10:42:03,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-26 10:42:03,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:03,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-26 10:42:03,068 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) [2021-03-26 10:42:03,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-26 10:42:03,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-26 10:42:03,069 INFO L185 Difference]: Start difference. First operand has 43 places, 33 transitions, 250 flow. Second operand 5 states and 443 transitions. [2021-03-26 10:42:03,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 302 flow [2021-03-26 10:42:03,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 292 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-26 10:42:03,073 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 300 flow [2021-03-26 10:42:03,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2021-03-26 10:42:03,073 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2021-03-26 10:42:03,073 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:03,073 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 40 transitions, 300 flow [2021-03-26 10:42:03,074 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 40 transitions, 300 flow [2021-03-26 10:42:03,074 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 40 transitions, 300 flow [2021-03-26 10:42:03,098 INFO L129 PetriNetUnfolder]: 131/322 cut-off events. [2021-03-26 10:42:03,098 INFO L130 PetriNetUnfolder]: For 695/751 co-relation queries the response was YES. [2021-03-26 10:42:03,100 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 322 events. 131/322 cut-off events. For 695/751 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1912 event pairs, 34 based on Foata normal form. 18/326 useless extension candidates. Maximal degree in co-relation 1107. Up to 170 conditions per place. [2021-03-26 10:42:03,103 INFO L142 LiptonReduction]: Number of co-enabled transitions 314 [2021-03-26 10:42:03,110 INFO L154 LiptonReduction]: Checked pairs total: 185 [2021-03-26 10:42:03,110 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:42:03,111 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 10:42:03,114 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 294 flow [2021-03-26 10:42:03,115 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) [2021-03-26 10:42:03,115 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:03,115 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:03,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:42:03,115 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:03,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:03,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1522686937, now seen corresponding path program 1 times [2021-03-26 10:42:03,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:03,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824751810] [2021-03-26 10:42:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:03,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,186 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:42:03,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:42:03,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:03,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:03,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824751810] [2021-03-26 10:42:03,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:03,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:42:03,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972267209] [2021-03-26 10:42:03,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:03,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:03,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:03,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:03,200 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 117 [2021-03-26 10:42:03,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 294 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) [2021-03-26 10:42:03,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:03,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 117 [2021-03-26 10:42:03,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:03,262 INFO L129 PetriNetUnfolder]: 65/195 cut-off events. [2021-03-26 10:42:03,262 INFO L130 PetriNetUnfolder]: For 632/694 co-relation queries the response was YES. [2021-03-26 10:42:03,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 195 events. 65/195 cut-off events. For 632/694 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1006 event pairs, 5 based on Foata normal form. 52/243 useless extension candidates. Maximal degree in co-relation 778. Up to 122 conditions per place. [2021-03-26 10:42:03,264 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 11 changer transitions 3/46 dead transitions. [2021-03-26 10:42:03,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 372 flow [2021-03-26 10:42:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 10:42:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 10:42:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2021-03-26 10:42:03,266 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7564102564102564 [2021-03-26 10:42:03,267 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2021-03-26 10:42:03,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2021-03-26 10:42:03,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:03,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2021-03-26 10:42:03,269 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) [2021-03-26 10:42:03,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-03-26 10:42:03,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-03-26 10:42:03,270 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 294 flow. Second operand 6 states and 531 transitions. [2021-03-26 10:42:03,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 372 flow [2021-03-26 10:42:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 362 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-26 10:42:03,275 INFO L241 Difference]: Finished difference. Result has 51 places, 43 transitions, 354 flow [2021-03-26 10:42:03,275 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2021-03-26 10:42:03,276 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-26 10:42:03,276 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:03,276 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 43 transitions, 354 flow [2021-03-26 10:42:03,276 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 43 transitions, 354 flow [2021-03-26 10:42:03,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 43 transitions, 354 flow [2021-03-26 10:42:03,291 INFO L129 PetriNetUnfolder]: 61/189 cut-off events. [2021-03-26 10:42:03,292 INFO L130 PetriNetUnfolder]: For 543/564 co-relation queries the response was YES. [2021-03-26 10:42:03,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 189 events. 61/189 cut-off events. For 543/564 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 996 event pairs, 4 based on Foata normal form. 3/189 useless extension candidates. Maximal degree in co-relation 793. Up to 116 conditions per place. [2021-03-26 10:42:03,294 INFO L142 LiptonReduction]: Number of co-enabled transitions 276 [2021-03-26 10:42:03,304 INFO L154 LiptonReduction]: Checked pairs total: 181 [2021-03-26 10:42:03,304 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:42:03,304 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28 [2021-03-26 10:42:03,306 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 346 flow [2021-03-26 10:42:03,307 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) [2021-03-26 10:42:03,307 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:03,307 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:03,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:42:03,307 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:03,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2145752381, now seen corresponding path program 1 times [2021-03-26 10:42:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029901302] [2021-03-26 10:42:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:03,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:03,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,372 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:42:03,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:42:03,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:03,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029901302] [2021-03-26 10:42:03,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:03,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:42:03,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631210106] [2021-03-26 10:42:03,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:03,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:03,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:03,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:03,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 117 [2021-03-26 10:42:03,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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) [2021-03-26 10:42:03,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:03,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 117 [2021-03-26 10:42:03,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:03,461 INFO L129 PetriNetUnfolder]: 70/202 cut-off events. [2021-03-26 10:42:03,461 INFO L130 PetriNetUnfolder]: For 786/846 co-relation queries the response was YES. [2021-03-26 10:42:03,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 202 events. 70/202 cut-off events. For 786/846 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 946 event pairs, 4 based on Foata normal form. 24/223 useless extension candidates. Maximal degree in co-relation 916. Up to 92 conditions per place. [2021-03-26 10:42:03,464 INFO L132 encePairwiseOnDemand]: 108/117 looper letters, 19 selfloop transitions, 23 changer transitions 5/62 dead transitions. [2021-03-26 10:42:03,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 624 flow [2021-03-26 10:42:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 10:42:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 10:42:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2021-03-26 10:42:03,466 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7313797313797313 [2021-03-26 10:42:03,466 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2021-03-26 10:42:03,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2021-03-26 10:42:03,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:03,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2021-03-26 10:42:03,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 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) [2021-03-26 10:42:03,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-26 10:42:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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) [2021-03-26 10:42:03,471 INFO L185 Difference]: Start difference. First operand has 51 places, 42 transitions, 346 flow. Second operand 7 states and 599 transitions. [2021-03-26 10:42:03,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 624 flow [2021-03-26 10:42:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 592 flow, removed 14 selfloop flow, removed 4 redundant places. [2021-03-26 10:42:03,476 INFO L241 Difference]: Finished difference. Result has 56 places, 52 transitions, 518 flow [2021-03-26 10:42:03,476 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2021-03-26 10:42:03,476 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-26 10:42:03,477 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:03,477 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 52 transitions, 518 flow [2021-03-26 10:42:03,477 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 52 transitions, 518 flow [2021-03-26 10:42:03,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 52 transitions, 518 flow [2021-03-26 10:42:03,491 INFO L129 PetriNetUnfolder]: 58/173 cut-off events. [2021-03-26 10:42:03,491 INFO L130 PetriNetUnfolder]: For 509/521 co-relation queries the response was YES. [2021-03-26 10:42:03,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 173 events. 58/173 cut-off events. For 509/521 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 815 event pairs, 3 based on Foata normal form. 3/173 useless extension candidates. Maximal degree in co-relation 735. Up to 56 conditions per place. [2021-03-26 10:42:03,494 INFO L142 LiptonReduction]: Number of co-enabled transitions 248 [2021-03-26 10:42:03,606 INFO L154 LiptonReduction]: Checked pairs total: 13 [2021-03-26 10:42:03,606 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:42:03,606 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 129 [2021-03-26 10:42:03,610 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 516 flow [2021-03-26 10:42:03,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 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) [2021-03-26 10:42:03,611 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:03,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:03,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:42:03,611 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -743718632, now seen corresponding path program 1 times [2021-03-26 10:42:03,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:03,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918481971] [2021-03-26 10:42:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:03,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:03,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,667 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:42:03,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:42:03,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:03,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918481971] [2021-03-26 10:42:03,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:03,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:42:03,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533511876] [2021-03-26 10:42:03,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:03,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:03,685 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 118 [2021-03-26 10:42:03,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:03,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 118 [2021-03-26 10:42:03,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:03,736 INFO L129 PetriNetUnfolder]: 63/186 cut-off events. [2021-03-26 10:42:03,736 INFO L130 PetriNetUnfolder]: For 977/1062 co-relation queries the response was YES. [2021-03-26 10:42:03,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 186 events. 63/186 cut-off events. For 977/1062 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 902 event pairs, 2 based on Foata normal form. 24/204 useless extension candidates. Maximal degree in co-relation 903. Up to 59 conditions per place. [2021-03-26 10:42:03,738 INFO L132 encePairwiseOnDemand]: 110/118 looper letters, 10 selfloop transitions, 20 changer transitions 12/58 dead transitions. [2021-03-26 10:42:03,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 688 flow [2021-03-26 10:42:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:42:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:42:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2021-03-26 10:42:03,740 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.747457627118644 [2021-03-26 10:42:03,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2021-03-26 10:42:03,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2021-03-26 10:42:03,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:03,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2021-03-26 10:42:03,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2021-03-26 10:42:03,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,743 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,744 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 516 flow. Second operand 5 states and 441 transitions. [2021-03-26 10:42:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 688 flow [2021-03-26 10:42:03,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 664 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-03-26 10:42:03,750 INFO L241 Difference]: Finished difference. Result has 56 places, 44 transitions, 471 flow [2021-03-26 10:42:03,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2021-03-26 10:42:03,750 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2021-03-26 10:42:03,750 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:03,751 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 44 transitions, 471 flow [2021-03-26 10:42:03,751 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 44 transitions, 471 flow [2021-03-26 10:42:03,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 44 transitions, 471 flow [2021-03-26 10:42:03,763 INFO L129 PetriNetUnfolder]: 40/142 cut-off events. [2021-03-26 10:42:03,763 INFO L130 PetriNetUnfolder]: For 756/772 co-relation queries the response was YES. [2021-03-26 10:42:03,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 142 events. 40/142 cut-off events. For 756/772 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 667 event pairs, 1 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 628. Up to 45 conditions per place. [2021-03-26 10:42:03,765 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-26 10:42:03,769 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:42:03,769 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:42:03,769 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 19 [2021-03-26 10:42:03,769 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 471 flow [2021-03-26 10:42:03,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,770 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:42:03,770 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:42:03,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 10:42:03,770 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:42:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:42:03,770 INFO L82 PathProgramCache]: Analyzing trace with hash -636692182, now seen corresponding path program 1 times [2021-03-26 10:42:03,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:42:03,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014090921] [2021-03-26 10:42:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:42:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:42:03,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:42:03,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:42:03,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:42:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:42:03,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014090921] [2021-03-26 10:42:03,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:42:03,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:42:03,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946637090] [2021-03-26 10:42:03,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:42:03,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:42:03,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:42:03,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:42:03,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 118 [2021-03-26 10:42:03,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 471 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-03-26 10:42:03,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:42:03,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 118 [2021-03-26 10:42:03,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:42:03,864 INFO L129 PetriNetUnfolder]: 39/129 cut-off events. [2021-03-26 10:42:03,864 INFO L130 PetriNetUnfolder]: For 746/838 co-relation queries the response was YES. [2021-03-26 10:42:03,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 129 events. 39/129 cut-off events. For 746/838 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 579 event pairs, 0 based on Foata normal form. 54/179 useless extension candidates. Maximal degree in co-relation 638. Up to 42 conditions per place. [2021-03-26 10:42:03,865 INFO L132 encePairwiseOnDemand]: 113/118 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2021-03-26 10:42:03,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 469 flow [2021-03-26 10:42:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:42:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:42:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2021-03-26 10:42:03,867 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8067796610169492 [2021-03-26 10:42:03,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2021-03-26 10:42:03,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2021-03-26 10:42:03,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:42:03,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2021-03-26 10:42:03,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 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) [2021-03-26 10:42:03,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:42:03,870 INFO L185 Difference]: Start difference. First operand has 55 places, 44 transitions, 471 flow. Second operand 5 states and 476 transitions. [2021-03-26 10:42:03,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 469 flow [2021-03-26 10:42:03,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 392 flow, removed 7 selfloop flow, removed 8 redundant places. [2021-03-26 10:42:03,874 INFO L241 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2021-03-26 10:42:03,874 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2021-03-26 10:42:03,874 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-26 10:42:03,874 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:42:03,874 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 0 transitions, 0 flow [2021-03-26 10:42:03,875 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 0 transitions, 0 flow [2021-03-26 10:42:03,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:42:03,875 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:42:03,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:42:03,875 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. [2021-03-26 10:42:03,875 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:42:03,875 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:42:03,875 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:42:03,875 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 10:42:03,876 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:42:03,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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) [2021-03-26 10:42:03,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 10:42:03,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:42:03 BasicIcfg [2021-03-26 10:42:03,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:42:03,881 INFO L168 Benchmark]: Toolchain (without parser) took 5199.01 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 321.8 MB in the beginning and 341.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:42:03,881 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 358.6 MB. Free memory was 339.8 MB in the beginning and 339.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:42:03,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.79 ms. Allocated memory is still 358.6 MB. Free memory was 321.6 MB in the beginning and 321.6 MB in the end (delta: -18.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-03-26 10:42:03,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.16 ms. Allocated memory is still 358.6 MB. Free memory was 321.6 MB in the beginning and 319.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:42:03,882 INFO L168 Benchmark]: Boogie Preprocessor took 18.77 ms. Allocated memory is still 358.6 MB. Free memory was 319.5 MB in the beginning and 318.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:42:03,882 INFO L168 Benchmark]: RCFGBuilder took 391.51 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 294.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-26 10:42:03,882 INFO L168 Benchmark]: TraceAbstraction took 4252.88 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 294.3 MB in the beginning and 341.8 MB in the end (delta: -47.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.0 GB. [2021-03-26 10:42:03,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 358.6 MB. Free memory was 339.8 MB in the beginning and 339.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 472.79 ms. Allocated memory is still 358.6 MB. Free memory was 321.6 MB in the beginning and 321.6 MB in the end (delta: -18.7 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.16 ms. Allocated memory is still 358.6 MB. Free memory was 321.6 MB in the beginning and 319.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.77 ms. Allocated memory is still 358.6 MB. Free memory was 319.5 MB in the beginning and 318.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 391.51 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 294.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4252.88 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 294.3 MB in the beginning and 341.8 MB in the end (delta: -47.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1327.7ms, 68 PlacesBefore, 31 PlacesAfterwards, 59 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1194 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 822, positive: 783, positive conditional: 783, positive unconditional: 0, negative: 39, negative conditional: 39, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 822, positive: 783, positive conditional: 0, positive unconditional: 783, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 822, positive: 783, positive conditional: 0, positive unconditional: 783, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 676, positive: 644, positive conditional: 0, positive unconditional: 644, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 676, positive: 636, positive conditional: 0, positive unconditional: 636, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 182, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 119, negative conditional: 0, negative unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 822, positive: 139, positive conditional: 0, positive unconditional: 139, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 676, unknown conditional: 0, unknown unconditional: 676] , Statistics on independence cache: Total cache size (in pairs): 676, Positive cache size: 644, Positive conditional cache size: 0, Positive unconditional cache size: 644, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 442.8ms, 36 PlacesBefore, 32 PlacesAfterwards, 26 TransitionsBefore, 24 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 132 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 81, positive: 72, positive conditional: 72, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 81, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 72, positive conditional: 0, positive unconditional: 72, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 81, positive: 64, positive conditional: 0, positive unconditional: 64, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 685, Positive cache size: 652, Positive conditional cache size: 0, Positive unconditional cache size: 652, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Eliminated conditions: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 498.9ms, 41 PlacesBefore, 37 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 178 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 268 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, positive: 108, positive conditional: 108, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, positive: 108, positive conditional: 0, positive unconditional: 108, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 694, Positive cache size: 659, Positive conditional cache size: 0, Positive unconditional cache size: 659, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 26 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.9ms, 46 PlacesBefore, 43 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 196 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 146 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 50, positive: 40, positive conditional: 40, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 54, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 40, positive conditional: 0, positive unconditional: 40, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 54, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 695, Positive cache size: 660, Positive conditional cache size: 0, Positive unconditional cache size: 660, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 28 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.8ms, 48 PlacesBefore, 48 PlacesAfterwards, 40 TransitionsBefore, 39 TransitionsAfterwards, 314 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 185 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 93, positive: 85, positive conditional: 85, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 101, positive: 85, positive conditional: 29, positive unconditional: 56, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 101, positive: 85, positive conditional: 29, positive unconditional: 56, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 101, positive: 79, positive conditional: 23, positive unconditional: 56, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 701, Positive cache size: 666, Positive conditional cache size: 6, Positive unconditional cache size: 660, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 40 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27.8ms, 51 PlacesBefore, 51 PlacesAfterwards, 43 TransitionsBefore, 42 TransitionsAfterwards, 276 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 181 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 77, positive: 69, positive conditional: 69, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 85, positive: 69, positive conditional: 27, positive unconditional: 42, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 85, positive: 69, positive conditional: 27, positive unconditional: 42, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 4, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 85, positive: 61, positive conditional: 23, positive unconditional: 38, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 8, unknown conditional: 4, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 709, Positive cache size: 674, Positive conditional cache size: 10, Positive unconditional cache size: 664, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 50 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 128.9ms, 56 PlacesBefore, 53 PlacesAfterwards, 52 TransitionsBefore, 51 TransitionsAfterwards, 248 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 13 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 13, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 13, positive: 13, positive conditional: 1, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 1, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 13, positive: 12, positive conditional: 1, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 710, Positive cache size: 675, Positive conditional cache size: 10, Positive unconditional cache size: 665, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.9ms, 56 PlacesBefore, 55 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 710, Positive cache size: 675, Positive conditional cache size: 10, Positive unconditional cache size: 665, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 49 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 710, Positive cache size: 675, Positive conditional cache size: 10, Positive unconditional cache size: 665, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Eliminated conditions: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4131.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 687.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1430.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 61 SDslu, 92 SDs, 0 SdLazy, 139 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 186.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=518occurred in iteration=6, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.1ms SsaConstructionTime, 187.4ms SatisfiabilityAnalysisTime, 440.7ms InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 472 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...