/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:31:11,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:31:11,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:31:11,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:31:11,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:31:11,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:31:11,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:31:11,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:31:11,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:31:11,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:31:11,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:31:11,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:31:11,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:31:11,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:31:11,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:31:11,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:31:11,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:31:11,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:31:11,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:31:11,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:31:11,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:31:11,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:31:11,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:31:11,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:31:11,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 07:31:11,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 07:31:11,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 07:31:11,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 07:31:11,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 07:31:11,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-06-13 07:31:11,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:31:11,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:31:11,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:31:11,383 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-NoLbe.epf [2021-06-13 07:31:11,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:31:11,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:31:11,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:31:11,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:31:11,416 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:31:11,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:31:11,416 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:31:11,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:31:11,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:31:11,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:31:11,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:31:11,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:31:11,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:31:11,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:31:11,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:31:11,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:31:11,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:31:11,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:31:11,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:31:11,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:31:11,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:31:11,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:31:11,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:31:11,725 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:31:11,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2021-06-13 07:31:11,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e3925e8/14b8ebfda7764b7187da4aef9f2e9f55/FLAG64d14f3e1 [2021-06-13 07:31:12,318 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:31:12,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2021-06-13 07:31:12,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e3925e8/14b8ebfda7764b7187da4aef9f2e9f55/FLAG64d14f3e1 [2021-06-13 07:31:12,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06e3925e8/14b8ebfda7764b7187da4aef9f2e9f55 [2021-06-13 07:31:12,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:31:12,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:31:12,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:31:12,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:31:12,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:31:12,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:31:12" (1/1) ... [2021-06-13 07:31:12,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc4f3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:12, skipping insertion in model container [2021-06-13 07:31:12,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:31:12" (1/1) ... [2021-06-13 07:31:12,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:31:12,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:31:12,868 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i[949,962] [2021-06-13 07:31:13,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:31:13,052 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:31:13,063 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i[949,962] [2021-06-13 07:31:13,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:31:13,202 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:31:13,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13 WrapperNode [2021-06-13 07:31:13,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:31:13,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:31:13,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:31:13,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:31:13,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:31:13,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:31:13,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:31:13,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:31:13,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (1/1) ... [2021-06-13 07:31:13,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:31:13,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:31:13,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:31:13,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:31:13,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (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 [2021-06-13 07:31:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:31:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:31:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:31:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:31:13,387 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:31:13,387 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:31:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:31:13,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:31:13,388 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:31:13,388 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:31:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-06-13 07:31:13,389 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-06-13 07:31:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:31:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:31:13,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:31:13,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:31:13,390 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:31:13,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:31:13,803 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:31:13,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:31:13 BoogieIcfgContainer [2021-06-13 07:31:13,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:31:13,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:31:13,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:31:13,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:31:13,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:31:12" (1/3) ... [2021-06-13 07:31:13,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:31:13, skipping insertion in model container [2021-06-13 07:31:13,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:31:13" (2/3) ... [2021-06-13 07:31:13,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c5e98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:31:13, skipping insertion in model container [2021-06-13 07:31:13,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:31:13" (3/3) ... [2021-06-13 07:31:13,813 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2021-06-13 07:31:13,818 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:31:13,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:31:13,819 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:31:13,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,854 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,854 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,856 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,857 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,858 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,859 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,860 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,861 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,862 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,862 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,862 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,862 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,862 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,863 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,865 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,865 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,865 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,866 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,869 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,870 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,872 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,872 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,874 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,875 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:31:13,876 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:31:13,896 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-13 07:31:13,923 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:31:13,923 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:31:13,923 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:31:13,923 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:31:13,923 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:31:13,923 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:31:13,924 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:31:13,924 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:31:13,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 214 flow [2021-06-13 07:31:13,989 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-06-13 07:31:13,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:13,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-06-13 07:31:13,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 97 transitions, 214 flow [2021-06-13 07:31:14,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 79 transitions, 170 flow [2021-06-13 07:31:14,033 INFO L129 PetriNetUnfolder]: 1/78 cut-off events. [2021-06-13 07:31:14,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:14,034 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:14,035 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:14,035 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:14,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:14,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1675625032, now seen corresponding path program 1 times [2021-06-13 07:31:14,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:14,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726064382] [2021-06-13 07:31:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:14,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:14,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:14,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:14,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:14,450 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:14,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:14,474 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:14,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:14,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:14,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:14,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:14,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:14,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:14,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:14,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:14,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726064382] [2021-06-13 07:31:14,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726064382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:14,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:14,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:14,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168033078] [2021-06-13 07:31:14,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:14,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:14,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:14,566 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:14,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2021-06-13 07:31:14,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:14,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:14,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:15,090 INFO L129 PetriNetUnfolder]: 823/1731 cut-off events. [2021-06-13 07:31:15,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:31:15,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1731 events. 823/1731 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11280 event pairs, 59 based on Foata normal form. 62/1726 useless extension candidates. Maximal degree in co-relation 2978. Up to 405 conditions per place. [2021-06-13 07:31:15,111 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 21 selfloop transitions, 8 changer transitions 56/147 dead transitions. [2021-06-13 07:31:15,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 147 transitions, 476 flow [2021-06-13 07:31:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1092 transitions. [2021-06-13 07:31:15,130 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.865979381443299 [2021-06-13 07:31:15,131 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1092 transitions. [2021-06-13 07:31:15,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1092 transitions. [2021-06-13 07:31:15,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:15,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1092 transitions. [2021-06-13 07:31:15,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.0) internal successors, (1092), 13 states have internal predecessors, (1092), 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) [2021-06-13 07:31:15,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:15,153 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:15,155 INFO L185 Difference]: Start difference. First operand has 91 places, 79 transitions, 170 flow. Second operand 13 states and 1092 transitions. [2021-06-13 07:31:15,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 147 transitions, 476 flow [2021-06-13 07:31:15,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 07:31:15,168 INFO L241 Difference]: Finished difference. Result has 111 places, 83 transitions, 268 flow [2021-06-13 07:31:15,170 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=268, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2021-06-13 07:31:15,171 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2021-06-13 07:31:15,171 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 268 flow [2021-06-13 07:31:15,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2021-06-13 07:31:15,171 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:15,171 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:15,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:31:15,172 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:15,173 INFO L82 PathProgramCache]: Analyzing trace with hash -728552423, now seen corresponding path program 1 times [2021-06-13 07:31:15,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:15,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330397372] [2021-06-13 07:31:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:15,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:15,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:15,272 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:15,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:15,283 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:15,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:15,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:15,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:15,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:15,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:15,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330397372] [2021-06-13 07:31:15,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330397372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:15,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:15,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:15,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694521095] [2021-06-13 07:31:15,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:15,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:15,319 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:15,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2021-06-13 07:31:15,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:15,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:15,321 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:15,698 INFO L129 PetriNetUnfolder]: 522/1474 cut-off events. [2021-06-13 07:31:15,698 INFO L130 PetriNetUnfolder]: For 3195/5282 co-relation queries the response was YES. [2021-06-13 07:31:15,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 1474 events. 522/1474 cut-off events. For 3195/5282 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10860 event pairs, 7 based on Foata normal form. 41/1472 useless extension candidates. Maximal degree in co-relation 4642. Up to 401 conditions per place. [2021-06-13 07:31:15,713 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 24 selfloop transitions, 14 changer transitions 64/164 dead transitions. [2021-06-13 07:31:15,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1096 flow [2021-06-13 07:31:15,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2021-06-13 07:31:15,716 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8651863600317209 [2021-06-13 07:31:15,716 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2021-06-13 07:31:15,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2021-06-13 07:31:15,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:15,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2021-06-13 07:31:15,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 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) [2021-06-13 07:31:15,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:15,724 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:15,724 INFO L185 Difference]: Start difference. First operand has 111 places, 83 transitions, 268 flow. Second operand 13 states and 1091 transitions. [2021-06-13 07:31:15,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1096 flow [2021-06-13 07:31:15,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 164 transitions, 1068 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-13 07:31:15,739 INFO L241 Difference]: Finished difference. Result has 122 places, 92 transitions, 443 flow [2021-06-13 07:31:15,739 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=443, PETRI_PLACES=122, PETRI_TRANSITIONS=92} [2021-06-13 07:31:15,740 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 31 predicate places. [2021-06-13 07:31:15,740 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 92 transitions, 443 flow [2021-06-13 07:31:15,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.57142857142857) internal successors, (550), 7 states have internal predecessors, (550), 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) [2021-06-13 07:31:15,740 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:15,740 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:15,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:31:15,741 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:15,741 INFO L82 PathProgramCache]: Analyzing trace with hash -764102120, now seen corresponding path program 1 times [2021-06-13 07:31:15,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:15,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607392411] [2021-06-13 07:31:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:15,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:15,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:15,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:15,876 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:15,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:15,898 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:15,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:15,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:15,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:15,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:15,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:15,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:15,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607392411] [2021-06-13 07:31:15,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607392411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:15,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:15,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:31:15,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958514907] [2021-06-13 07:31:15,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:31:15,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:15,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:31:15,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:31:15,951 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:15,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 92 transitions, 443 flow. Second operand has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 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) [2021-06-13 07:31:15,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:15,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:15,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:16,233 INFO L129 PetriNetUnfolder]: 308/948 cut-off events. [2021-06-13 07:31:16,233 INFO L130 PetriNetUnfolder]: For 5791/10909 co-relation queries the response was YES. [2021-06-13 07:31:16,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 948 events. 308/948 cut-off events. For 5791/10909 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6131 event pairs, 7 based on Foata normal form. 32/938 useless extension candidates. Maximal degree in co-relation 3976. Up to 256 conditions per place. [2021-06-13 07:31:16,244 INFO L132 encePairwiseOnDemand]: 84/97 looper letters, 26 selfloop transitions, 16 changer transitions 83/187 dead transitions. [2021-06-13 07:31:16,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 187 transitions, 1778 flow [2021-06-13 07:31:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:31:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:31:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 923 transitions. [2021-06-13 07:31:16,247 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8650421743205249 [2021-06-13 07:31:16,247 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 923 transitions. [2021-06-13 07:31:16,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 923 transitions. [2021-06-13 07:31:16,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:16,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 923 transitions. [2021-06-13 07:31:16,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.9090909090909) internal successors, (923), 11 states have internal predecessors, (923), 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) [2021-06-13 07:31:16,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2021-06-13 07:31:16,252 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 97.0) internal successors, (1164), 12 states have internal predecessors, (1164), 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) [2021-06-13 07:31:16,252 INFO L185 Difference]: Start difference. First operand has 122 places, 92 transitions, 443 flow. Second operand 11 states and 923 transitions. [2021-06-13 07:31:16,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 187 transitions, 1778 flow [2021-06-13 07:31:16,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 187 transitions, 1738 flow, removed 20 selfloop flow, removed 0 redundant places. [2021-06-13 07:31:16,273 INFO L241 Difference]: Finished difference. Result has 131 places, 94 transitions, 532 flow [2021-06-13 07:31:16,274 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=532, PETRI_PLACES=131, PETRI_TRANSITIONS=94} [2021-06-13 07:31:16,274 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 40 predicate places. [2021-06-13 07:31:16,274 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 94 transitions, 532 flow [2021-06-13 07:31:16,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 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) [2021-06-13 07:31:16,275 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:16,275 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:16,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:31:16,275 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -511862955, now seen corresponding path program 1 times [2021-06-13 07:31:16,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:16,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761895896] [2021-06-13 07:31:16,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:16,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:16,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:16,388 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:16,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:16,401 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:16,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:16,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:16,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:16,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:16,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:16,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761895896] [2021-06-13 07:31:16,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761895896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:16,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:16,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:16,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922101504] [2021-06-13 07:31:16,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:16,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:16,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:16,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:16,441 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:16,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 94 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:16,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:16,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:16,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:16,691 INFO L129 PetriNetUnfolder]: 127/501 cut-off events. [2021-06-13 07:31:16,692 INFO L130 PetriNetUnfolder]: For 3760/5336 co-relation queries the response was YES. [2021-06-13 07:31:16,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 501 events. 127/501 cut-off events. For 3760/5336 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2797 event pairs, 5 based on Foata normal form. 17/501 useless extension candidates. Maximal degree in co-relation 2183. Up to 113 conditions per place. [2021-06-13 07:31:16,699 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 27 selfloop transitions, 19 changer transitions 31/139 dead transitions. [2021-06-13 07:31:16,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 139 transitions, 1242 flow [2021-06-13 07:31:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1061 transitions. [2021-06-13 07:31:16,701 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8413957176843775 [2021-06-13 07:31:16,702 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1061 transitions. [2021-06-13 07:31:16,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1061 transitions. [2021-06-13 07:31:16,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:16,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1061 transitions. [2021-06-13 07:31:16,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.61538461538461) internal successors, (1061), 13 states have internal predecessors, (1061), 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) [2021-06-13 07:31:16,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:16,708 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:16,708 INFO L185 Difference]: Start difference. First operand has 131 places, 94 transitions, 532 flow. Second operand 13 states and 1061 transitions. [2021-06-13 07:31:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 139 transitions, 1242 flow [2021-06-13 07:31:16,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 139 transitions, 1129 flow, removed 25 selfloop flow, removed 9 redundant places. [2021-06-13 07:31:16,718 INFO L241 Difference]: Finished difference. Result has 140 places, 101 transitions, 682 flow [2021-06-13 07:31:16,719 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=682, PETRI_PLACES=140, PETRI_TRANSITIONS=101} [2021-06-13 07:31:16,719 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 49 predicate places. [2021-06-13 07:31:16,719 INFO L482 AbstractCegarLoop]: Abstraction has has 140 places, 101 transitions, 682 flow [2021-06-13 07:31:16,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 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) [2021-06-13 07:31:16,719 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:16,720 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:16,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:31:16,720 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:16,720 INFO L82 PathProgramCache]: Analyzing trace with hash -326451399, now seen corresponding path program 1 times [2021-06-13 07:31:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:16,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506853079] [2021-06-13 07:31:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:16,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:16,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:16,797 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:16,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:16,807 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:16,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:16,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:16,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:16,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:16,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:16,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:16,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506853079] [2021-06-13 07:31:16,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506853079] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:16,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:16,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:16,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609959401] [2021-06-13 07:31:16,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:16,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:16,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:16,840 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:16,841 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 101 transitions, 682 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:16,841 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:16,841 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:16,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:17,069 INFO L129 PetriNetUnfolder]: 94/519 cut-off events. [2021-06-13 07:31:17,070 INFO L130 PetriNetUnfolder]: For 4871/7677 co-relation queries the response was YES. [2021-06-13 07:31:17,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 519 events. 94/519 cut-off events. For 4871/7677 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3253 event pairs, 3 based on Foata normal form. 29/532 useless extension candidates. Maximal degree in co-relation 2224. Up to 81 conditions per place. [2021-06-13 07:31:17,078 INFO L132 encePairwiseOnDemand]: 87/97 looper letters, 31 selfloop transitions, 19 changer transitions 27/139 dead transitions. [2021-06-13 07:31:17,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 1355 flow [2021-06-13 07:31:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1055 transitions. [2021-06-13 07:31:17,081 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8366375892149088 [2021-06-13 07:31:17,081 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1055 transitions. [2021-06-13 07:31:17,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1055 transitions. [2021-06-13 07:31:17,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:17,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1055 transitions. [2021-06-13 07:31:17,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.15384615384616) internal successors, (1055), 13 states have internal predecessors, (1055), 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) [2021-06-13 07:31:17,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:17,086 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:17,086 INFO L185 Difference]: Start difference. First operand has 140 places, 101 transitions, 682 flow. Second operand 13 states and 1055 transitions. [2021-06-13 07:31:17,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 1355 flow [2021-06-13 07:31:17,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 1251 flow, removed 50 selfloop flow, removed 7 redundant places. [2021-06-13 07:31:17,100 INFO L241 Difference]: Finished difference. Result has 148 places, 102 transitions, 773 flow [2021-06-13 07:31:17,100 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=773, PETRI_PLACES=148, PETRI_TRANSITIONS=102} [2021-06-13 07:31:17,101 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2021-06-13 07:31:17,101 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 102 transitions, 773 flow [2021-06-13 07:31:17,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:17,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:17,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:17,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:31:17,102 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1225756862, now seen corresponding path program 1 times [2021-06-13 07:31:17,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:17,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001801] [2021-06-13 07:31:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:17,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:17,141 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:17,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:17,149 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:17,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:17,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:17,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:17,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:17,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:17,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001801] [2021-06-13 07:31:17,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:17,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:17,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:17,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974106629] [2021-06-13 07:31:17,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:17,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:17,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:17,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:17,180 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:17,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 102 transitions, 773 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:17,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:17,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:17,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:17,404 INFO L129 PetriNetUnfolder]: 66/439 cut-off events. [2021-06-13 07:31:17,404 INFO L130 PetriNetUnfolder]: For 4953/7125 co-relation queries the response was YES. [2021-06-13 07:31:17,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 439 events. 66/439 cut-off events. For 4953/7125 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2660 event pairs, 3 based on Foata normal form. 33/458 useless extension candidates. Maximal degree in co-relation 1980. Up to 64 conditions per place. [2021-06-13 07:31:17,409 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 25 selfloop transitions, 21 changer transitions 25/133 dead transitions. [2021-06-13 07:31:17,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 133 transitions, 1359 flow [2021-06-13 07:31:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1056 transitions. [2021-06-13 07:31:17,412 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8374306106264869 [2021-06-13 07:31:17,412 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1056 transitions. [2021-06-13 07:31:17,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1056 transitions. [2021-06-13 07:31:17,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:17,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1056 transitions. [2021-06-13 07:31:17,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 81.23076923076923) internal successors, (1056), 13 states have internal predecessors, (1056), 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) [2021-06-13 07:31:17,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:17,417 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:17,417 INFO L185 Difference]: Start difference. First operand has 148 places, 102 transitions, 773 flow. Second operand 13 states and 1056 transitions. [2021-06-13 07:31:17,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 133 transitions, 1359 flow [2021-06-13 07:31:17,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 133 transitions, 1229 flow, removed 65 selfloop flow, removed 10 redundant places. [2021-06-13 07:31:17,431 INFO L241 Difference]: Finished difference. Result has 151 places, 100 transitions, 758 flow [2021-06-13 07:31:17,431 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=758, PETRI_PLACES=151, PETRI_TRANSITIONS=100} [2021-06-13 07:31:17,432 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 60 predicate places. [2021-06-13 07:31:17,432 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 100 transitions, 758 flow [2021-06-13 07:31:17,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 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) [2021-06-13 07:31:17,432 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:17,432 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:17,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:31:17,433 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1619857352, now seen corresponding path program 1 times [2021-06-13 07:31:17,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:17,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837114643] [2021-06-13 07:31:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:17,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:17,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:17,473 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:31:17,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:31:17,482 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:17,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:17,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:17,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:17,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:17,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:17,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837114643] [2021-06-13 07:31:17,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837114643] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:17,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:17,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:31:17,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199672643] [2021-06-13 07:31:17,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:31:17,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:31:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:31:17,517 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-06-13 07:31:17,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 100 transitions, 758 flow. Second operand has 8 states, 8 states have (on average 78.75) internal successors, (630), 8 states have internal predecessors, (630), 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) [2021-06-13 07:31:17,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:17,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-06-13 07:31:17,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:17,658 INFO L129 PetriNetUnfolder]: 65/458 cut-off events. [2021-06-13 07:31:17,658 INFO L130 PetriNetUnfolder]: For 5492/7872 co-relation queries the response was YES. [2021-06-13 07:31:17,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 458 events. 65/458 cut-off events. For 5492/7872 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2733 event pairs, 0 based on Foata normal form. 27/473 useless extension candidates. Maximal degree in co-relation 2046. Up to 60 conditions per place. [2021-06-13 07:31:17,664 INFO L132 encePairwiseOnDemand]: 85/97 looper letters, 23 selfloop transitions, 12 changer transitions 38/135 dead transitions. [2021-06-13 07:31:17,664 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 135 transitions, 1505 flow [2021-06-13 07:31:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:31:17,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:31:17,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 662 transitions. [2021-06-13 07:31:17,666 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8530927835051546 [2021-06-13 07:31:17,666 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 662 transitions. [2021-06-13 07:31:17,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 662 transitions. [2021-06-13 07:31:17,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:17,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 662 transitions. [2021-06-13 07:31:17,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.75) internal successors, (662), 8 states have internal predecessors, (662), 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) [2021-06-13 07:31:17,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:17,670 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:17,670 INFO L185 Difference]: Start difference. First operand has 151 places, 100 transitions, 758 flow. Second operand 8 states and 662 transitions. [2021-06-13 07:31:17,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 135 transitions, 1505 flow [2021-06-13 07:31:17,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 1373 flow, removed 66 selfloop flow, removed 12 redundant places. [2021-06-13 07:31:17,685 INFO L241 Difference]: Finished difference. Result has 141 places, 90 transitions, 563 flow [2021-06-13 07:31:17,686 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=141, PETRI_TRANSITIONS=90} [2021-06-13 07:31:17,686 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 50 predicate places. [2021-06-13 07:31:17,686 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 90 transitions, 563 flow [2021-06-13 07:31:17,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 78.75) internal successors, (630), 8 states have internal predecessors, (630), 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) [2021-06-13 07:31:17,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:17,687 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:17,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:31:17,687 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:17,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:17,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1621555562, now seen corresponding path program 2 times [2021-06-13 07:31:17,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:17,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893935659] [2021-06-13 07:31:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:17,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:17,749 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:17,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:17,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:17,773 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:17,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:17,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:17,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:17,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:17,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893935659] [2021-06-13 07:31:17,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893935659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:17,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:17,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:31:17,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950800235] [2021-06-13 07:31:17,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:31:17,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:17,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:31:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:31:17,787 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:17,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 90 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-13 07:31:17,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:17,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:17,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:18,143 INFO L129 PetriNetUnfolder]: 1206/2341 cut-off events. [2021-06-13 07:31:18,143 INFO L130 PetriNetUnfolder]: For 2664/2760 co-relation queries the response was YES. [2021-06-13 07:31:18,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5108 conditions, 2341 events. 1206/2341 cut-off events. For 2664/2760 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 17761 event pairs, 53 based on Foata normal form. 0/2126 useless extension candidates. Maximal degree in co-relation 5072. Up to 806 conditions per place. [2021-06-13 07:31:18,169 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 29 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2021-06-13 07:31:18,169 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 127 transitions, 735 flow [2021-06-13 07:31:18,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:31:18,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:31:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 871 transitions. [2021-06-13 07:31:18,172 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8979381443298969 [2021-06-13 07:31:18,172 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 871 transitions. [2021-06-13 07:31:18,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 871 transitions. [2021-06-13 07:31:18,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:18,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 871 transitions. [2021-06-13 07:31:18,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.1) internal successors, (871), 10 states have internal predecessors, (871), 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) [2021-06-13 07:31:18,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2021-06-13 07:31:18,176 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 97.0) internal successors, (1067), 11 states have internal predecessors, (1067), 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) [2021-06-13 07:31:18,176 INFO L185 Difference]: Start difference. First operand has 141 places, 90 transitions, 563 flow. Second operand 10 states and 871 transitions. [2021-06-13 07:31:18,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 127 transitions, 735 flow [2021-06-13 07:31:18,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 592 flow, removed 33 selfloop flow, removed 17 redundant places. [2021-06-13 07:31:18,185 INFO L241 Difference]: Finished difference. Result has 136 places, 108 transitions, 563 flow [2021-06-13 07:31:18,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=136, PETRI_TRANSITIONS=108} [2021-06-13 07:31:18,186 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 45 predicate places. [2021-06-13 07:31:18,186 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 108 transitions, 563 flow [2021-06-13 07:31:18,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 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) [2021-06-13 07:31:18,186 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:18,186 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:18,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:31:18,187 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:18,187 INFO L82 PathProgramCache]: Analyzing trace with hash 466886736, now seen corresponding path program 1 times [2021-06-13 07:31:18,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:18,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328346824] [2021-06-13 07:31:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:18,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:18,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:18,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:18,225 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:18,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:18,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:18,247 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:18,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:18,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:18,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:18,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328346824] [2021-06-13 07:31:18,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328346824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:18,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:18,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:18,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159770994] [2021-06-13 07:31:18,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:18,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:18,262 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:18,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 108 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-13 07:31:18,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:18,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:18,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:18,757 INFO L129 PetriNetUnfolder]: 1357/2640 cut-off events. [2021-06-13 07:31:18,758 INFO L130 PetriNetUnfolder]: For 8657/10518 co-relation queries the response was YES. [2021-06-13 07:31:18,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10348 conditions, 2640 events. 1357/2640 cut-off events. For 8657/10518 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 20714 event pairs, 14 based on Foata normal form. 215/2694 useless extension candidates. Maximal degree in co-relation 10317. Up to 1487 conditions per place. [2021-06-13 07:31:18,788 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 31 selfloop transitions, 38 changer transitions 3/150 dead transitions. [2021-06-13 07:31:18,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 150 transitions, 987 flow [2021-06-13 07:31:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:31:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:31:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1134 transitions. [2021-06-13 07:31:18,792 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8992862807295797 [2021-06-13 07:31:18,792 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1134 transitions. [2021-06-13 07:31:18,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1134 transitions. [2021-06-13 07:31:18,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:18,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1134 transitions. [2021-06-13 07:31:18,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.23076923076923) internal successors, (1134), 13 states have internal predecessors, (1134), 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) [2021-06-13 07:31:18,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:18,799 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 97.0) internal successors, (1358), 14 states have internal predecessors, (1358), 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) [2021-06-13 07:31:18,799 INFO L185 Difference]: Start difference. First operand has 136 places, 108 transitions, 563 flow. Second operand 13 states and 1134 transitions. [2021-06-13 07:31:18,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 150 transitions, 987 flow [2021-06-13 07:31:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 150 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:31:18,810 INFO L241 Difference]: Finished difference. Result has 152 places, 129 transitions, 856 flow [2021-06-13 07:31:18,811 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=856, PETRI_PLACES=152, PETRI_TRANSITIONS=129} [2021-06-13 07:31:18,811 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 61 predicate places. [2021-06-13 07:31:18,811 INFO L482 AbstractCegarLoop]: Abstraction has has 152 places, 129 transitions, 856 flow [2021-06-13 07:31:18,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2021-06-13 07:31:18,812 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:18,812 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:18,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:31:18,812 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash -2135798583, now seen corresponding path program 1 times [2021-06-13 07:31:18,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:18,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603038613] [2021-06-13 07:31:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:18,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:18,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:18,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:18,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:18,863 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:18,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:18,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:18,893 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:18,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:18,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:18,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:18,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:18,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603038613] [2021-06-13 07:31:18,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603038613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:18,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:18,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:31:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114934620] [2021-06-13 07:31:18,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:31:18,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:18,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:31:18,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:31:18,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:18,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 129 transitions, 856 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-13 07:31:18,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:18,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:18,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:19,495 INFO L129 PetriNetUnfolder]: 1233/2563 cut-off events. [2021-06-13 07:31:19,495 INFO L130 PetriNetUnfolder]: For 21432/27039 co-relation queries the response was YES. [2021-06-13 07:31:19,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 2563 events. 1233/2563 cut-off events. For 21432/27039 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 21336 event pairs, 1 based on Foata normal form. 327/2731 useless extension candidates. Maximal degree in co-relation 13790. Up to 1355 conditions per place. [2021-06-13 07:31:19,530 INFO L132 encePairwiseOnDemand]: 86/97 looper letters, 22 selfloop transitions, 56 changer transitions 21/177 dead transitions. [2021-06-13 07:31:19,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 177 transitions, 1532 flow [2021-06-13 07:31:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:31:19,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:31:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1396 transitions. [2021-06-13 07:31:19,534 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8994845360824743 [2021-06-13 07:31:19,534 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1396 transitions. [2021-06-13 07:31:19,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1396 transitions. [2021-06-13 07:31:19,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:19,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1396 transitions. [2021-06-13 07:31:19,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.25) internal successors, (1396), 16 states have internal predecessors, (1396), 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) [2021-06-13 07:31:19,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2021-06-13 07:31:19,542 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 97.0) internal successors, (1649), 17 states have internal predecessors, (1649), 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) [2021-06-13 07:31:19,542 INFO L185 Difference]: Start difference. First operand has 152 places, 129 transitions, 856 flow. Second operand 16 states and 1396 transitions. [2021-06-13 07:31:19,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 177 transitions, 1532 flow [2021-06-13 07:31:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 1423 flow, removed 45 selfloop flow, removed 4 redundant places. [2021-06-13 07:31:19,600 INFO L241 Difference]: Finished difference. Result has 169 places, 146 transitions, 1100 flow [2021-06-13 07:31:19,600 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1100, PETRI_PLACES=169, PETRI_TRANSITIONS=146} [2021-06-13 07:31:19,600 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 78 predicate places. [2021-06-13 07:31:19,600 INFO L482 AbstractCegarLoop]: Abstraction has has 169 places, 146 transitions, 1100 flow [2021-06-13 07:31:19,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 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) [2021-06-13 07:31:19,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:19,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:19,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:31:19,601 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 215615372, now seen corresponding path program 1 times [2021-06-13 07:31:19,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:19,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309466990] [2021-06-13 07:31:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:19,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:19,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:19,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:19,649 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:31:19,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:31:19,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:19,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:19,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:19,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:19,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:19,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309466990] [2021-06-13 07:31:19,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309466990] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:19,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:19,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:31:19,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85987534] [2021-06-13 07:31:19,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:31:19,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:19,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:31:19,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:31:19,681 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:19,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 146 transitions, 1100 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 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) [2021-06-13 07:31:19,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:19,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:19,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:19,998 INFO L129 PetriNetUnfolder]: 706/2183 cut-off events. [2021-06-13 07:31:19,998 INFO L130 PetriNetUnfolder]: For 15854/16416 co-relation queries the response was YES. [2021-06-13 07:31:20,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 2183 events. 706/2183 cut-off events. For 15854/16416 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 21241 event pairs, 21 based on Foata normal form. 10/2079 useless extension candidates. Maximal degree in co-relation 9720. Up to 590 conditions per place. [2021-06-13 07:31:20,025 INFO L132 encePairwiseOnDemand]: 90/97 looper letters, 14 selfloop transitions, 5 changer transitions 28/154 dead transitions. [2021-06-13 07:31:20,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 154 transitions, 1180 flow [2021-06-13 07:31:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:31:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:31:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 679 transitions. [2021-06-13 07:31:20,027 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-06-13 07:31:20,027 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 679 transitions. [2021-06-13 07:31:20,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 679 transitions. [2021-06-13 07:31:20,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:20,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 679 transitions. [2021-06-13 07:31:20,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.875) internal successors, (679), 8 states have internal predecessors, (679), 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) [2021-06-13 07:31:20,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:20,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 97.0) internal successors, (873), 9 states have internal predecessors, (873), 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) [2021-06-13 07:31:20,032 INFO L185 Difference]: Start difference. First operand has 169 places, 146 transitions, 1100 flow. Second operand 8 states and 679 transitions. [2021-06-13 07:31:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 154 transitions, 1180 flow [2021-06-13 07:31:20,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 154 transitions, 977 flow, removed 65 selfloop flow, removed 12 redundant places. [2021-06-13 07:31:20,219 INFO L241 Difference]: Finished difference. Result has 168 places, 122 transitions, 734 flow [2021-06-13 07:31:20,220 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=734, PETRI_PLACES=168, PETRI_TRANSITIONS=122} [2021-06-13 07:31:20,220 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 77 predicate places. [2021-06-13 07:31:20,220 INFO L482 AbstractCegarLoop]: Abstraction has has 168 places, 122 transitions, 734 flow [2021-06-13 07:31:20,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 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) [2021-06-13 07:31:20,221 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:31:20,221 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:31:20,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 07:31:20,221 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:31:20,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:31:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash 693691038, now seen corresponding path program 2 times [2021-06-13 07:31:20,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:31:20,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254716968] [2021-06-13 07:31:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:31:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:31:20,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:20,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:20,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:20,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:20,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:31:20,292 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:31:20,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:31:20,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:31:20,315 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:31:20,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:31:20,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:31:20,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:31:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:31:20,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:31:20,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254716968] [2021-06-13 07:31:20,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254716968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:31:20,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:31:20,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-13 07:31:20,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356371864] [2021-06-13 07:31:20,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-13 07:31:20,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:31:20,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-13 07:31:20,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-13 07:31:20,326 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 97 [2021-06-13 07:31:20,327 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 122 transitions, 734 flow. Second operand has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 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) [2021-06-13 07:31:20,327 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:31:20,327 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 97 [2021-06-13 07:31:20,327 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:31:20,740 INFO L129 PetriNetUnfolder]: 414/1484 cut-off events. [2021-06-13 07:31:20,741 INFO L130 PetriNetUnfolder]: For 4136/5471 co-relation queries the response was YES. [2021-06-13 07:31:20,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 1484 events. 414/1484 cut-off events. For 4136/5471 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 14697 event pairs, 1 based on Foata normal form. 253/1628 useless extension candidates. Maximal degree in co-relation 5411. Up to 243 conditions per place. [2021-06-13 07:31:20,753 INFO L132 encePairwiseOnDemand]: 88/97 looper letters, 0 selfloop transitions, 0 changer transitions 128/128 dead transitions. [2021-06-13 07:31:20,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 128 transitions, 895 flow [2021-06-13 07:31:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-13 07:31:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-06-13 07:31:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1528 transitions. [2021-06-13 07:31:20,756 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8751431844215349 [2021-06-13 07:31:20,756 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1528 transitions. [2021-06-13 07:31:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1528 transitions. [2021-06-13 07:31:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:31:20,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1528 transitions. [2021-06-13 07:31:20,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 84.88888888888889) internal successors, (1528), 18 states have internal predecessors, (1528), 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) [2021-06-13 07:31:20,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 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) [2021-06-13 07:31:20,762 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 97.0) internal successors, (1843), 19 states have internal predecessors, (1843), 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) [2021-06-13 07:31:20,762 INFO L185 Difference]: Start difference. First operand has 168 places, 122 transitions, 734 flow. Second operand 18 states and 1528 transitions. [2021-06-13 07:31:20,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 128 transitions, 895 flow [2021-06-13 07:31:20,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 128 transitions, 837 flow, removed 4 selfloop flow, removed 13 redundant places. [2021-06-13 07:31:20,797 INFO L241 Difference]: Finished difference. Result has 159 places, 0 transitions, 0 flow [2021-06-13 07:31:20,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=159, PETRI_TRANSITIONS=0} [2021-06-13 07:31:20,797 INFO L335 CegarLoopForPetriNet]: 91 programPoint places, 68 predicate places. [2021-06-13 07:31:20,797 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 0 transitions, 0 flow [2021-06-13 07:31:20,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 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) [2021-06-13 07:31:20,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 07:31:20,800 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:31:20,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:31:20 BasicIcfg [2021-06-13 07:31:20,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:31:20,807 INFO L168 Benchmark]: Toolchain (without parser) took 8173.16 ms. Allocated memory was 255.9 MB in the beginning and 439.4 MB in the end (delta: 183.5 MB). Free memory was 220.0 MB in the beginning and 259.9 MB in the end (delta: -40.0 MB). Peak memory consumption was 144.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,807 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:31:20,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.13 ms. Allocated memory is still 255.9 MB. Free memory was 219.8 MB in the beginning and 221.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.85 ms. Allocated memory is still 255.9 MB. Free memory was 221.1 MB in the beginning and 219.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,808 INFO L168 Benchmark]: Boogie Preprocessor took 34.03 ms. Allocated memory is still 255.9 MB. Free memory was 218.6 MB in the beginning and 216.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,808 INFO L168 Benchmark]: RCFGBuilder took 505.26 ms. Allocated memory is still 255.9 MB. Free memory was 216.9 MB in the beginning and 191.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,809 INFO L168 Benchmark]: TraceAbstraction took 6994.29 ms. Allocated memory was 255.9 MB in the beginning and 439.4 MB in the end (delta: 183.5 MB). Free memory was 190.7 MB in the beginning and 259.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 114.8 MB. Max. memory is 8.0 GB. [2021-06-13 07:31:20,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 238.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 572.13 ms. Allocated memory is still 255.9 MB. Free memory was 219.8 MB in the beginning and 221.1 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.85 ms. Allocated memory is still 255.9 MB. Free memory was 221.1 MB in the beginning and 219.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.03 ms. Allocated memory is still 255.9 MB. Free memory was 218.6 MB in the beginning and 216.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 505.26 ms. Allocated memory is still 255.9 MB. Free memory was 216.9 MB in the beginning and 191.2 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6994.29 ms. Allocated memory was 255.9 MB in the beginning and 439.4 MB in the end (delta: 183.5 MB). Free memory was 190.7 MB in the beginning and 259.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 114.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 33.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6879.8ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4982.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 75.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 220 SDtfs, 521 SDslu, 783 SDs, 0 SdLazy, 687 SolverSat, 181 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 509.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1527.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1100occurred in iteration=10, InterpolantAutomatonStates: 149, 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: 38.0ms SsaConstructionTime, 295.0ms SatisfiabilityAnalysisTime, 1245.1ms InterpolantComputationTime, 745 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 733 ConstructedInterpolants, 0 QuantifiedInterpolants, 3215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...