/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/safe018_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 10:35:42,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 10:35:42,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 10:35:42,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 10:35:42,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 10:35:42,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 10:35:42,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 10:35:42,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 10:35:42,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 10:35:42,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 10:35:42,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 10:35:42,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 10:35:42,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 10:35:42,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 10:35:42,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 10:35:42,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 10:35:42,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 10:35:42,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 10:35:42,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 10:35:42,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 10:35:42,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 10:35:42,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 10:35:42,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 10:35:42,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 10:35:42,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 10:35:42,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 10:35:42,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 10:35:42,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 10:35:42,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 10:35:42,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 10:35:42,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 10:35:42,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 10:35:42,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 10:35:42,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 10:35:42,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 10:35:42,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 10:35:42,201 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 10:35:42,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 10:35:42,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 10:35:42,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 10:35:42,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 10:35:42,224 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 10:35:42,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 10:35:42,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 10:35:42,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 10:35:42,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 10:35:42,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 10:35:42,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 10:35:42,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 10:35:42,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 10:35:42,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 10:35:42,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 10:35:42,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 10:35:42,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:35:42,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 10:35:42,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 10:35:42,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 10:35:42,228 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 10:35:42,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 10:35:42,228 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 10:35:42,228 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 10:35:42,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 10:35:42,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 10:35:42,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 10:35:42,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 10:35:42,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 10:35:42,640 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 10:35:42,641 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 10:35:42,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-03-26 10:35:42,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02649b03/80144361273e40229b532ec282728a89/FLAGdfdd2a7d3 [2021-03-26 10:35:43,338 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 10:35:43,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i [2021-03-26 10:35:43,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02649b03/80144361273e40229b532ec282728a89/FLAGdfdd2a7d3 [2021-03-26 10:35:43,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f02649b03/80144361273e40229b532ec282728a89 [2021-03-26 10:35:43,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 10:35:43,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 10:35:43,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 10:35:43,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 10:35:43,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 10:35:43,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:35:43" (1/1) ... [2021-03-26 10:35:43,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b23c336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:43, skipping insertion in model container [2021-03-26 10:35:43,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 10:35:43" (1/1) ... [2021-03-26 10:35:43,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 10:35:43,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 10:35:43,880 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-03-26 10:35:44,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:35:44,075 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 10:35:44,088 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.opt.i[949,962] [2021-03-26 10:35:44,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 10:35:44,215 INFO L208 MainTranslator]: Completed translation [2021-03-26 10:35:44,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44 WrapperNode [2021-03-26 10:35:44,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 10:35:44,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 10:35:44,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 10:35:44,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 10:35:44,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 10:35:44,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 10:35:44,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 10:35:44,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 10:35:44,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... [2021-03-26 10:35:44,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 10:35:44,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 10:35:44,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 10:35:44,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 10:35:44,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 10:35:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 10:35:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 10:35:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 10:35:44,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 10:35:44,384 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 10:35:44,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 10:35:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 10:35:44,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 10:35:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 10:35:44,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 10:35:44,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 10:35:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 10:35:44,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 10:35:44,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 10:35:44,388 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 10:35:44,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 10:35:44,726 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 10:35:44,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:35:44 BoogieIcfgContainer [2021-03-26 10:35:44,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 10:35:44,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 10:35:44,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 10:35:44,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 10:35:44,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 10:35:43" (1/3) ... [2021-03-26 10:35:44,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123ff517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:35:44, skipping insertion in model container [2021-03-26 10:35:44,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 10:35:44" (2/3) ... [2021-03-26 10:35:44,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123ff517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 10:35:44, skipping insertion in model container [2021-03-26 10:35:44,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 10:35:44" (3/3) ... [2021-03-26 10:35:44,735 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.opt.i [2021-03-26 10:35:44,741 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 10:35:44,745 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 10:35:44,746 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 10:35:44,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,792 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,792 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,793 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,793 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,794 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,794 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,795 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,796 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,796 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,797 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,798 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,800 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,801 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,801 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,801 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,815 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,815 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,818 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 10:35:44,823 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 10:35:44,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 10:35:44,882 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 10:35:44,882 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 10:35:44,882 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 10:35:44,882 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 10:35:44,882 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 10:35:44,882 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 10:35:44,882 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 10:35:44,882 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 10:35:44,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-26 10:35:44,966 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-26 10:35:44,966 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:35:44,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-26 10:35:44,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-26 10:35:44,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-26 10:35:44,984 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:45,004 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-26 10:35:45,008 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-26 10:35:45,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-26 10:35:45,072 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-26 10:35:45,072 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:35:45,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-26 10:35:45,074 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-26 10:35:46,532 INFO L154 LiptonReduction]: Checked pairs total: 984 [2021-03-26 10:35:46,533 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-26 10:35:46,535 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1552 [2021-03-26 10:35:46,545 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-26 10:35:46,545 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:35:46,546 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:46,546 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:46,547 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:46,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:46,551 INFO L82 PathProgramCache]: Analyzing trace with hash 933445281, now seen corresponding path program 1 times [2021-03-26 10:35:46,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:46,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104579064] [2021-03-26 10:35:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:46,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:46,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:35:46,772 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:35:46,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:35:46,787 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 10:35:46,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104579064] [2021-03-26 10:35:46,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:46,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:35:46,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380480054] [2021-03-26 10:35:46,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 10:35:46,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:46,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 10:35:46,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 10:35:46,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2021-03-26 10:35:46,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 10:35:46,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:46,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2021-03-26 10:35:46,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:46,835 INFO L129 PetriNetUnfolder]: 7/41 cut-off events. [2021-03-26 10:35:46,835 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:35:46,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 41 events. 7/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 91 event pairs, 5 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 57. Up to 18 conditions per place. [2021-03-26 10:35:46,837 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 4 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-26 10:35:46,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 67 flow [2021-03-26 10:35:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:35:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:35:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2021-03-26 10:35:46,850 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.855457227138643 [2021-03-26 10:35:46,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2021-03-26 10:35:46,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2021-03-26 10:35:46,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:46,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2021-03-26 10:35:46,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 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 10:35:46,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:46,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:46,865 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 290 transitions. [2021-03-26 10:35:46,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 67 flow [2021-03-26 10:35:46,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 10:35:46,869 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 65 flow [2021-03-26 10:35:46,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-03-26 10:35:46,872 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-26 10:35:46,872 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:46,873 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-26 10:35:46,873 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-26 10:35:46,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 22 transitions, 65 flow [2021-03-26 10:35:46,878 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-26 10:35:46,878 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 10:35:46,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 30 events. 3/30 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-26 10:35:46,879 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-26 10:35:47,257 INFO L154 LiptonReduction]: Checked pairs total: 280 [2021-03-26 10:35:47,257 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:35:47,257 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 385 [2021-03-26 10:35:47,260 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-03-26 10:35:47,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 10:35:47,261 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:47,261 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:47,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 10:35:47,261 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:47,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1127967768, now seen corresponding path program 1 times [2021-03-26 10:35:47,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:47,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279816782] [2021-03-26 10:35:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:47,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:47,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:35:47,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:47,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:47,340 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:35:47,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:35:47,348 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 10:35:47,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279816782] [2021-03-26 10:35:47,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:47,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:35:47,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74128430] [2021-03-26 10:35:47,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:35:47,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:47,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:35:47,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:35:47,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2021-03-26 10:35:47,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 10:35:47,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:47,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2021-03-26 10:35:47,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:47,418 INFO L129 PetriNetUnfolder]: 14/52 cut-off events. [2021-03-26 10:35:47,418 INFO L130 PetriNetUnfolder]: For 13/21 co-relation queries the response was YES. [2021-03-26 10:35:47,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 52 events. 14/52 cut-off events. For 13/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 139 event pairs, 1 based on Foata normal form. 4/55 useless extension candidates. Maximal degree in co-relation 104. Up to 17 conditions per place. [2021-03-26 10:35:47,420 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 8 changer transitions 0/26 dead transitions. [2021-03-26 10:35:47,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 109 flow [2021-03-26 10:35:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:35:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:35:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2021-03-26 10:35:47,426 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.803448275862069 [2021-03-26 10:35:47,426 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 466 transitions. [2021-03-26 10:35:47,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 466 transitions. [2021-03-26 10:35:47,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:47,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 466 transitions. [2021-03-26 10:35:47,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.2) internal successors, (466), 5 states have internal predecessors, (466), 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 10:35:47,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 10:35:47,435 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 10:35:47,435 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 466 transitions. [2021-03-26 10:35:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 109 flow [2021-03-26 10:35:47,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 10:35:47,437 INFO L241 Difference]: Finished difference. Result has 33 places, 24 transitions, 111 flow [2021-03-26 10:35:47,438 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2021-03-26 10:35:47,438 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2021-03-26 10:35:47,438 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:47,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 24 transitions, 111 flow [2021-03-26 10:35:47,440 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 24 transitions, 111 flow [2021-03-26 10:35:47,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 24 transitions, 111 flow [2021-03-26 10:35:47,451 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2021-03-26 10:35:47,451 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-03-26 10:35:47,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 45 events. 10/45 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 124 event pairs, 3 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 111. Up to 20 conditions per place. [2021-03-26 10:35:47,453 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-26 10:35:47,606 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 10:35:47,820 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-26 10:35:47,890 INFO L154 LiptonReduction]: Checked pairs total: 122 [2021-03-26 10:35:47,890 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:35:47,891 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 453 [2021-03-26 10:35:47,892 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 109 flow [2021-03-26 10:35:47,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 10:35:47,892 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:47,892 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:47,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 10:35:47,892 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1330289015, now seen corresponding path program 1 times [2021-03-26 10:35:47,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:47,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53077370] [2021-03-26 10:35:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:47,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:47,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:47,968 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:35:47,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:35:47,977 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 10:35:47,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53077370] [2021-03-26 10:35:47,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:47,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:35:47,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136491777] [2021-03-26 10:35:47,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:35:47,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:47,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:35:47,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:35:47,981 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-26 10:35:47,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:47,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:47,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-26 10:35:47,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:47,995 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-03-26 10:35:47,995 INFO L130 PetriNetUnfolder]: For 42/57 co-relation queries the response was YES. [2021-03-26 10:35:47,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 35 events. 6/35 cut-off events. For 42/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 81 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 97. Up to 15 conditions per place. [2021-03-26 10:35:47,996 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 7 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2021-03-26 10:35:47,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 131 flow [2021-03-26 10:35:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:35:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:35:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2021-03-26 10:35:47,997 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8233618233618234 [2021-03-26 10:35:47,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2021-03-26 10:35:47,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2021-03-26 10:35:47,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:47,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2021-03-26 10:35:47,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:47,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,000 INFO L185 Difference]: Start difference. First operand has 32 places, 23 transitions, 109 flow. Second operand 3 states and 289 transitions. [2021-03-26 10:35:48,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 131 flow [2021-03-26 10:35:48,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 10:35:48,002 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 120 flow [2021-03-26 10:35:48,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-26 10:35:48,003 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-26 10:35:48,003 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,003 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 120 flow [2021-03-26 10:35:48,003 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 120 flow [2021-03-26 10:35:48,004 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 120 flow [2021-03-26 10:35:48,007 INFO L129 PetriNetUnfolder]: 6/35 cut-off events. [2021-03-26 10:35:48,008 INFO L130 PetriNetUnfolder]: For 27/29 co-relation queries the response was YES. [2021-03-26 10:35:48,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 35 events. 6/35 cut-off events. For 27/29 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 1 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 86. Up to 13 conditions per place. [2021-03-26 10:35:48,009 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-26 10:35:48,010 INFO L154 LiptonReduction]: Checked pairs total: 82 [2021-03-26 10:35:48,011 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:35:48,011 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 10:35:48,012 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 120 flow [2021-03-26 10:35:48,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,012 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,013 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 10:35:48,013 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,013 INFO L82 PathProgramCache]: Analyzing trace with hash 722497835, now seen corresponding path program 1 times [2021-03-26 10:35:48,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155338234] [2021-03-26 10:35:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,047 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 10:35:48,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155338234] [2021-03-26 10:35:48,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 10:35:48,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052004896] [2021-03-26 10:35:48,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 10:35:48,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 10:35:48,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 10:35:48,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 117 [2021-03-26 10:35:48,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 117 [2021-03-26 10:35:48,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,059 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-26 10:35:48,059 INFO L130 PetriNetUnfolder]: For 39/42 co-relation queries the response was YES. [2021-03-26 10:35:48,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 31 events. 5/31 cut-off events. For 39/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 80. Up to 11 conditions per place. [2021-03-26 10:35:48,060 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2021-03-26 10:35:48,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 23 transitions, 130 flow [2021-03-26 10:35:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 10:35:48,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 10:35:48,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-26 10:35:48,061 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8660968660968661 [2021-03-26 10:35:48,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-26 10:35:48,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-26 10:35:48,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-26 10:35:48,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,064 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 120 flow. Second operand 3 states and 304 transitions. [2021-03-26 10:35:48,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 23 transitions, 130 flow [2021-03-26 10:35:48,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 23 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:35:48,066 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 126 flow [2021-03-26 10:35:48,067 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-26 10:35:48,067 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-26 10:35:48,067 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,067 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 126 flow [2021-03-26 10:35:48,068 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 126 flow [2021-03-26 10:35:48,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 23 transitions, 126 flow [2021-03-26 10:35:48,071 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-26 10:35:48,071 INFO L130 PetriNetUnfolder]: For 25/26 co-relation queries the response was YES. [2021-03-26 10:35:48,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 31 events. 5/31 cut-off events. For 25/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 80. Up to 11 conditions per place. [2021-03-26 10:35:48,072 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-26 10:35:48,074 INFO L154 LiptonReduction]: Checked pairs total: 67 [2021-03-26 10:35:48,074 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:35:48,074 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 10:35:48,075 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 126 flow [2021-03-26 10:35:48,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,076 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 10:35:48,076 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,077 INFO L82 PathProgramCache]: Analyzing trace with hash 401978809, now seen corresponding path program 1 times [2021-03-26 10:35:48,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528034796] [2021-03-26 10:35:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,125 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 10:35:48,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528034796] [2021-03-26 10:35:48,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:35:48,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286396932] [2021-03-26 10:35:48,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:35:48,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:35:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:35:48,128 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-26 10:35:48,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-26 10:35:48,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,151 INFO L129 PetriNetUnfolder]: 12/60 cut-off events. [2021-03-26 10:35:48,151 INFO L130 PetriNetUnfolder]: For 133/142 co-relation queries the response was YES. [2021-03-26 10:35:48,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 60 events. 12/60 cut-off events. For 133/142 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 0 based on Foata normal form. 8/67 useless extension candidates. Maximal degree in co-relation 172. Up to 20 conditions per place. [2021-03-26 10:35:48,152 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 6 selfloop transitions, 5 changer transitions 7/32 dead transitions. [2021-03-26 10:35:48,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 225 flow [2021-03-26 10:35:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:35:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:35:48,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2021-03-26 10:35:48,154 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8247863247863247 [2021-03-26 10:35:48,154 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2021-03-26 10:35:48,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2021-03-26 10:35:48,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2021-03-26 10:35:48,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,157 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,158 INFO L185 Difference]: Start difference. First operand has 35 places, 23 transitions, 126 flow. Second operand 4 states and 386 transitions. [2021-03-26 10:35:48,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 225 flow [2021-03-26 10:35:48,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 10:35:48,160 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 138 flow [2021-03-26 10:35:48,161 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2021-03-26 10:35:48,161 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-26 10:35:48,161 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,161 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 23 transitions, 138 flow [2021-03-26 10:35:48,161 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 23 transitions, 138 flow [2021-03-26 10:35:48,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 23 transitions, 138 flow [2021-03-26 10:35:48,165 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-26 10:35:48,165 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-03-26 10:35:48,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 31 events. 5/31 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 89. Up to 11 conditions per place. [2021-03-26 10:35:48,167 INFO L142 LiptonReduction]: Number of co-enabled transitions 116 [2021-03-26 10:35:48,169 INFO L154 LiptonReduction]: Checked pairs total: 50 [2021-03-26 10:35:48,169 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:35:48,169 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-03-26 10:35:48,172 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 138 flow [2021-03-26 10:35:48,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,173 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 10:35:48,173 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,174 INFO L82 PathProgramCache]: Analyzing trace with hash -853609968, now seen corresponding path program 1 times [2021-03-26 10:35:48,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869168198] [2021-03-26 10:35:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,255 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:35:48,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:35:48,264 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 10:35:48,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869168198] [2021-03-26 10:35:48,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:35:48,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528301135] [2021-03-26 10:35:48,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:35:48,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:35:48,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:35:48,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 117 [2021-03-26 10:35:48,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 117 [2021-03-26 10:35:48,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,293 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-26 10:35:48,294 INFO L130 PetriNetUnfolder]: For 138/144 co-relation queries the response was YES. [2021-03-26 10:35:48,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 35 events. 5/35 cut-off events. For 138/144 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 1 based on Foata normal form. 4/39 useless extension candidates. Maximal degree in co-relation 116. Up to 13 conditions per place. [2021-03-26 10:35:48,294 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 3 selfloop transitions, 3 changer transitions 9/25 dead transitions. [2021-03-26 10:35:48,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 180 flow [2021-03-26 10:35:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 10:35:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 10:35:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-03-26 10:35:48,296 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-03-26 10:35:48,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-03-26 10:35:48,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-03-26 10:35:48,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-03-26 10:35:48,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 10:35:48,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,300 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,300 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 138 flow. Second operand 4 states and 371 transitions. [2021-03-26 10:35:48,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 180 flow [2021-03-26 10:35:48,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 164 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-26 10:35:48,305 INFO L241 Difference]: Finished difference. Result has 39 places, 16 transitions, 88 flow [2021-03-26 10:35:48,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=16} [2021-03-26 10:35:48,306 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2021-03-26 10:35:48,306 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,306 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 16 transitions, 88 flow [2021-03-26 10:35:48,306 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 16 transitions, 88 flow [2021-03-26 10:35:48,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 16 transitions, 88 flow [2021-03-26 10:35:48,310 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-03-26 10:35:48,310 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-26 10:35:48,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 18 events. 1/18 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 1 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 51. Up to 6 conditions per place. [2021-03-26 10:35:48,311 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-26 10:35:48,333 INFO L154 LiptonReduction]: Checked pairs total: 35 [2021-03-26 10:35:48,333 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 10:35:48,333 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 10:35:48,336 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 84 flow [2021-03-26 10:35:48,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,336 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,336 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 10:35:48,336 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash 914227181, now seen corresponding path program 1 times [2021-03-26 10:35:48,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024927550] [2021-03-26 10:35:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,400 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:35:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:35:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 10:35:48,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024927550] [2021-03-26 10:35:48,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 10:35:48,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174862482] [2021-03-26 10:35:48,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:35:48,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:35:48,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:35:48,417 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 118 [2021-03-26 10:35:48,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 15 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 118 [2021-03-26 10:35:48,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,458 INFO L129 PetriNetUnfolder]: 31/73 cut-off events. [2021-03-26 10:35:48,460 INFO L130 PetriNetUnfolder]: For 561/601 co-relation queries the response was YES. [2021-03-26 10:35:48,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 73 events. 31/73 cut-off events. For 561/601 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 233 event pairs, 15 based on Foata normal form. 12/78 useless extension candidates. Maximal degree in co-relation 225. Up to 48 conditions per place. [2021-03-26 10:35:48,462 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 5 selfloop transitions, 4 changer transitions 7/25 dead transitions. [2021-03-26 10:35:48,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 136 flow [2021-03-26 10:35:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:35:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:35:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-03-26 10:35:48,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7932203389830509 [2021-03-26 10:35:48,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-03-26 10:35:48,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-03-26 10:35:48,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-03-26 10:35:48,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,467 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 10:35:48,468 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 10:35:48,468 INFO L185 Difference]: Start difference. First operand has 36 places, 15 transitions, 84 flow. Second operand 5 states and 468 transitions. [2021-03-26 10:35:48,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 136 flow [2021-03-26 10:35:48,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 100 flow, removed 9 selfloop flow, removed 11 redundant places. [2021-03-26 10:35:48,470 INFO L241 Difference]: Finished difference. Result has 32 places, 18 transitions, 84 flow [2021-03-26 10:35:48,471 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=18} [2021-03-26 10:35:48,471 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-26 10:35:48,471 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,471 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 18 transitions, 84 flow [2021-03-26 10:35:48,471 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 18 transitions, 84 flow [2021-03-26 10:35:48,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 18 transitions, 84 flow [2021-03-26 10:35:48,481 INFO L129 PetriNetUnfolder]: 27/61 cut-off events. [2021-03-26 10:35:48,481 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2021-03-26 10:35:48,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 61 events. 27/61 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 169 event pairs, 14 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 181. Up to 40 conditions per place. [2021-03-26 10:35:48,482 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 10:35:48,572 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-26 10:35:48,572 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:35:48,572 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 101 [2021-03-26 10:35:48,575 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 88 flow [2021-03-26 10:35:48,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,576 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,576 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 10:35:48,576 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,576 INFO L82 PathProgramCache]: Analyzing trace with hash 937175861, now seen corresponding path program 1 times [2021-03-26 10:35:48,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361707344] [2021-03-26 10:35:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,654 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:35:48,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:35:48,661 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 10:35:48,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361707344] [2021-03-26 10:35:48,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:35:48,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302926527] [2021-03-26 10:35:48,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 10:35:48,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 10:35:48,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 10:35:48,665 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-03-26 10:35:48,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-03-26 10:35:48,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,721 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-03-26 10:35:48,721 INFO L130 PetriNetUnfolder]: For 171/209 co-relation queries the response was YES. [2021-03-26 10:35:48,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 53 events. 17/53 cut-off events. For 171/209 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 146 event pairs, 3 based on Foata normal form. 17/68 useless extension candidates. Maximal degree in co-relation 188. Up to 35 conditions per place. [2021-03-26 10:35:48,722 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 5 selfloop transitions, 7 changer transitions 7/28 dead transitions. [2021-03-26 10:35:48,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 184 flow [2021-03-26 10:35:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 10:35:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 10:35:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-26 10:35:48,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-03-26 10:35:48,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-26 10:35:48,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-26 10:35:48,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-26 10:35:48,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 10:35:48,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 10:35:48,730 INFO L185 Difference]: Start difference. First operand has 30 places, 18 transitions, 88 flow. Second operand 6 states and 561 transitions. [2021-03-26 10:35:48,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 184 flow [2021-03-26 10:35:48,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 176 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-26 10:35:48,731 INFO L241 Difference]: Finished difference. Result has 36 places, 21 transitions, 136 flow [2021-03-26 10:35:48,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2021-03-26 10:35:48,732 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-03-26 10:35:48,732 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,732 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 21 transitions, 136 flow [2021-03-26 10:35:48,732 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 21 transitions, 136 flow [2021-03-26 10:35:48,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 21 transitions, 136 flow [2021-03-26 10:35:48,737 INFO L129 PetriNetUnfolder]: 12/41 cut-off events. [2021-03-26 10:35:48,737 INFO L130 PetriNetUnfolder]: For 102/110 co-relation queries the response was YES. [2021-03-26 10:35:48,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 41 events. 12/41 cut-off events. For 102/110 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 154. Up to 23 conditions per place. [2021-03-26 10:35:48,738 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 10:35:48,839 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-26 10:35:48,839 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:35:48,839 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 107 [2021-03-26 10:35:48,840 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 142 flow [2021-03-26 10:35:48,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,840 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:48,841 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:48,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 10:35:48,841 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:48,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:48,841 INFO L82 PathProgramCache]: Analyzing trace with hash 938075357, now seen corresponding path program 1 times [2021-03-26 10:35:48,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:48,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385303203] [2021-03-26 10:35:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:48,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 10:35:48,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:48,904 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 10:35:48,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 10:35:48,910 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 10:35:48,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385303203] [2021-03-26 10:35:48,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:48,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 10:35:48,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175696464] [2021-03-26 10:35:48,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 10:35:48,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 10:35:48,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 10:35:48,912 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-03-26 10:35:48,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:48,914 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-03-26 10:35:48,914 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:48,944 INFO L129 PetriNetUnfolder]: 8/37 cut-off events. [2021-03-26 10:35:48,944 INFO L130 PetriNetUnfolder]: For 138/153 co-relation queries the response was YES. [2021-03-26 10:35:48,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 37 events. 8/37 cut-off events. For 138/153 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 1 based on Foata normal form. 7/43 useless extension candidates. Maximal degree in co-relation 146. Up to 21 conditions per place. [2021-03-26 10:35:48,945 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 2 selfloop transitions, 6 changer transitions 4/21 dead transitions. [2021-03-26 10:35:48,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 21 transitions, 162 flow [2021-03-26 10:35:48,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:35:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:35:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2021-03-26 10:35:48,947 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7354838709677419 [2021-03-26 10:35:48,947 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2021-03-26 10:35:48,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2021-03-26 10:35:48,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:48,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2021-03-26 10:35:48,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:48,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 10:35:48,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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 10:35:48,951 INFO L185 Difference]: Start difference. First operand has 34 places, 21 transitions, 142 flow. Second operand 5 states and 456 transitions. [2021-03-26 10:35:48,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 21 transitions, 162 flow [2021-03-26 10:35:48,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 21 transitions, 130 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-26 10:35:48,952 INFO L241 Difference]: Finished difference. Result has 35 places, 17 transitions, 101 flow [2021-03-26 10:35:48,952 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=17} [2021-03-26 10:35:48,952 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-26 10:35:48,952 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:48,953 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 17 transitions, 101 flow [2021-03-26 10:35:48,953 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 17 transitions, 101 flow [2021-03-26 10:35:48,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 17 transitions, 101 flow [2021-03-26 10:35:48,956 INFO L129 PetriNetUnfolder]: 2/26 cut-off events. [2021-03-26 10:35:48,956 INFO L130 PetriNetUnfolder]: For 43/50 co-relation queries the response was YES. [2021-03-26 10:35:48,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 26 events. 2/26 cut-off events. For 43/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 78. Up to 9 conditions per place. [2021-03-26 10:35:48,956 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-26 10:35:49,084 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-26 10:35:49,085 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 10:35:49,085 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 133 [2021-03-26 10:35:49,085 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 14 transitions, 95 flow [2021-03-26 10:35:49,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:49,085 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 10:35:49,086 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 10:35:49,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 10:35:49,086 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 10:35:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 10:35:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1682365865, now seen corresponding path program 1 times [2021-03-26 10:35:49,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 10:35:49,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872758080] [2021-03-26 10:35:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 10:35:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 10:35:49,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:49,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:49,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:49,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:49,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 10:35:49,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 10:35:49,147 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 10:35:49,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 10:35:49,153 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 10:35:49,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872758080] [2021-03-26 10:35:49,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 10:35:49,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 10:35:49,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826044378] [2021-03-26 10:35:49,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 10:35:49,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 10:35:49,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 10:35:49,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 10:35:49,156 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 127 [2021-03-26 10:35:49,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 14 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:49,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 10:35:49,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 127 [2021-03-26 10:35:49,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 10:35:49,177 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-26 10:35:49,177 INFO L130 PetriNetUnfolder]: For 72/80 co-relation queries the response was YES. [2021-03-26 10:35:49,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 14 events. 1/14 cut-off events. For 72/80 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 3/17 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2021-03-26 10:35:49,177 INFO L132 encePairwiseOnDemand]: 120/127 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-26 10:35:49,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 13 transitions, 93 flow [2021-03-26 10:35:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 10:35:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 10:35:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-26 10:35:49,179 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7196850393700788 [2021-03-26 10:35:49,179 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-26 10:35:49,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-26 10:35:49,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 10:35:49,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-26 10:35:49,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 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 10:35:49,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 10:35:49,182 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 10:35:49,182 INFO L185 Difference]: Start difference. First operand has 32 places, 14 transitions, 95 flow. Second operand 5 states and 457 transitions. [2021-03-26 10:35:49,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 13 transitions, 93 flow [2021-03-26 10:35:49,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 13 transitions, 62 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-03-26 10:35:49,183 INFO L241 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2021-03-26 10:35:49,183 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2021-03-26 10:35:49,183 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2021-03-26 10:35:49,183 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 10:35:49,183 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 0 transitions, 0 flow [2021-03-26 10:35:49,184 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 0 transitions, 0 flow [2021-03-26 10:35:49,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 10:35:49,184 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 10:35:49,184 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 10:35:49,184 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 10:35:49,184 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 10:35:49,184 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 10:35:49,184 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 10:35:49,184 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 10:35:49,185 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 10:35:49,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 10:35:49,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 10:35:49,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 10:35:49 BasicIcfg [2021-03-26 10:35:49,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 10:35:49,190 INFO L168 Benchmark]: Toolchain (without parser) took 5497.04 ms. Allocated memory was 255.9 MB in the beginning and 432.0 MB in the end (delta: 176.2 MB). Free memory was 233.3 MB in the beginning and 266.8 MB in the end (delta: -33.5 MB). Peak memory consumption was 143.4 MB. Max. memory is 16.0 GB. [2021-03-26 10:35:49,190 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:35:49,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.37 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 233.1 MB in the beginning and 322.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.0 GB. [2021-03-26 10:35:49,191 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.62 ms. Allocated memory is still 358.6 MB. Free memory was 321.7 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:35:49,191 INFO L168 Benchmark]: Boogie Preprocessor took 22.97 ms. Allocated memory is still 358.6 MB. Free memory was 320.3 MB in the beginning and 318.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 10:35:49,191 INFO L168 Benchmark]: RCFGBuilder took 441.22 ms. Allocated memory is still 358.6 MB. Free memory was 318.9 MB in the beginning and 297.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 10:35:49,191 INFO L168 Benchmark]: TraceAbstraction took 4459.59 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 296.5 MB in the beginning and 266.8 MB in the end (delta: 29.7 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.0 GB. [2021-03-26 10:35:49,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 523.37 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 233.1 MB in the beginning and 322.4 MB in the end (delta: -89.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.62 ms. Allocated memory is still 358.6 MB. Free memory was 321.7 MB in the beginning and 320.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.97 ms. Allocated memory is still 358.6 MB. Free memory was 320.3 MB in the beginning and 318.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 441.22 ms. Allocated memory is still 358.6 MB. Free memory was 318.9 MB in the beginning and 297.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4459.59 ms. Allocated memory was 358.6 MB in the beginning and 432.0 MB in the end (delta: 73.4 MB). Free memory was 296.5 MB in the beginning and 266.8 MB in the end (delta: 29.7 MB). Peak memory consumption was 102.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1525.0ms, 68 PlacesBefore, 30 PlacesAfterwards, 59 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 984 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 522, positive: 490, positive conditional: 490, positive unconditional: 0, negative: 32, negative conditional: 32, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 522, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 522, positive: 490, positive conditional: 0, positive unconditional: 490, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 461, positive: 441, positive conditional: 0, positive unconditional: 441, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 461, positive: 439, positive conditional: 0, positive unconditional: 439, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 522, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 461, unknown conditional: 0, unknown unconditional: 461] , Statistics on independence cache: Total cache size (in pairs): 461, Positive cache size: 441, Positive conditional cache size: 0, Positive unconditional cache size: 441, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 384.1ms, 30 PlacesBefore, 27 PlacesAfterwards, 22 TransitionsBefore, 19 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 280 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 159, positive: 131, positive conditional: 131, positive unconditional: 0, negative: 28, negative conditional: 28, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 159, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 159, positive: 131, positive conditional: 0, positive unconditional: 131, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 47, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 47, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 43, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 159, positive: 88, positive conditional: 0, positive unconditional: 88, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 47, unknown conditional: 0, unknown unconditional: 47] , Statistics on independence cache: Total cache size (in pairs): 508, Positive cache size: 484, Positive conditional cache size: 0, Positive unconditional cache size: 484, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 450.4ms, 33 PlacesBefore, 32 PlacesAfterwards, 24 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 122 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 80, positive: 70, positive conditional: 70, 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: 80, positive: 70, positive conditional: 2, positive unconditional: 68, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 80, positive: 70, positive conditional: 2, positive unconditional: 68, negative: 10, negative conditional: 0, negative unconditional: 10, 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: 80, positive: 70, positive conditional: 2, positive unconditional: 68, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 508, Positive cache size: 484, Positive conditional cache size: 0, Positive unconditional cache size: 484, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.5ms, 34 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 82 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 56, positive: 50, positive conditional: 50, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 56, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 56, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 6, negative conditional: 0, negative unconditional: 6, 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: 56, positive: 49, positive conditional: 0, positive unconditional: 49, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 509, Positive cache size: 485, Positive conditional cache size: 0, Positive unconditional cache size: 485, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 16 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8ms, 35 PlacesBefore, 35 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 67 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 50, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 50, positive: 45, positive conditional: 1, positive unconditional: 44, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 45, positive conditional: 1, positive unconditional: 44, negative: 5, negative conditional: 0, negative unconditional: 5, 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: 50, positive: 45, positive conditional: 1, positive unconditional: 44, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 509, Positive cache size: 485, Positive conditional cache size: 0, Positive unconditional cache size: 485, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9ms, 38 PlacesBefore, 38 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 116 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 50 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 43, positive: 39, positive conditional: 39, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 43, positive: 39, positive conditional: 1, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 43, positive: 39, positive conditional: 1, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, 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: 43, positive: 39, positive conditional: 1, positive unconditional: 38, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 509, Positive cache size: 485, Positive conditional cache size: 0, Positive unconditional cache size: 485, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 26.8ms, 39 PlacesBefore, 36 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 35 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 30, positive: 25, positive conditional: 25, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 30, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 30, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 511, Positive cache size: 487, Positive conditional cache size: 0, Positive unconditional cache size: 487, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 100.7ms, 32 PlacesBefore, 30 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, 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: 14, positive: 14, positive conditional: 7, positive unconditional: 7, 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: 14, positive: 14, positive conditional: 7, positive unconditional: 7, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 14, positive: 12, positive conditional: 7, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 513, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 106.6ms, 36 PlacesBefore, 34 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, 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: 9, positive: 9, positive conditional: 7, positive unconditional: 2, 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: 9, positive: 9, positive conditional: 7, positive unconditional: 2, 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: 9, positive: 9, positive conditional: 7, positive unconditional: 2, 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): 513, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 131.7ms, 35 PlacesBefore, 32 PlacesAfterwards, 17 TransitionsBefore, 14 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 7, 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: 7, positive: 7, positive conditional: 6, positive unconditional: 1, 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: 7, positive: 7, positive conditional: 6, positive unconditional: 1, 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: 7, positive: 7, positive conditional: 6, positive unconditional: 1, 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): 513, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 26 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): 513, Positive cache size: 489, Positive conditional cache size: 0, Positive unconditional cache size: 489, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, 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: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4311.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 459.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1658.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 42 SDtfs, 33 SDslu, 18 SDs, 0 SdLazy, 114 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 144.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=8, InterpolantAutomatonStates: 43, 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: 23.3ms SsaConstructionTime, 178.6ms SatisfiabilityAnalysisTime, 546.8ms InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...