/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:09:17,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:09:17,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:09:17,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:09:17,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:09:17,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:09:17,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:09:17,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:09:17,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:09:17,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:09:17,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:09:17,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:09:17,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:09:17,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:09:17,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:09:17,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:09:17,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:09:17,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:09:17,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:09:17,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:09:17,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:09:17,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:09:17,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:09:17,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:09:17,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:09:17,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:09:17,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:09:17,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:09:17,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:09:17,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:09:17,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:09:17,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:09:17,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:09:17,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:09:17,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:09:17,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:09:17,493 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-VariableLbe.epf [2021-03-24 11:09:17,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:09:17,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:09:17,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:09:17,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:09:17,532 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:09:17,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:09:17,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:09:17,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:09:17,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:09:17,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:09:17,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:09:17,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:09:17,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:09:17,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:09:17,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:09:17,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:09:17,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:09:17,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:09:17,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:09:17,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:09:17,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:09:17,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:09:17,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:09:17,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:09:17,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:09:17,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:09:17,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:09:17,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:09:17,538 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:09:17,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:09:17,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:09:17,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:09:17,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:09:17,891 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:09:17,892 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:09:17,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2021-03-24 11:09:17,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4794efb96/e0fd57a434b14d108cec767de514d574/FLAG825b1ce17 [2021-03-24 11:09:18,485 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:09:18,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i [2021-03-24 11:09:18,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4794efb96/e0fd57a434b14d108cec767de514d574/FLAG825b1ce17 [2021-03-24 11:09:18,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4794efb96/e0fd57a434b14d108cec767de514d574 [2021-03-24 11:09:18,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:09:18,802 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:09:18,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:18,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:09:18,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:09:18,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:18" (1/1) ... [2021-03-24 11:09:18,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f520d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:18, skipping insertion in model container [2021-03-24 11:09:18,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:09:18" (1/1) ... [2021-03-24 11:09:18,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:09:18,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:09:18,983 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i[949,962] [2021-03-24 11:09:19,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:19,205 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:09:19,216 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.opt.i[949,962] [2021-03-24 11:09:19,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:09:19,327 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:09:19,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19 WrapperNode [2021-03-24 11:09:19,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:09:19,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:19,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:09:19,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:09:19,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:09:19,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:09:19,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:09:19,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:09:19,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... [2021-03-24 11:09:19,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:09:19,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:09:19,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:09:19,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:09:19,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:09:19,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:09:19,508 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:09:19,509 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:09:19,509 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:09:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:09:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 11:09:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 11:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:09:19,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:09:19,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:09:19,512 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:09:19,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:09:19,797 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:09:19,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:19 BoogieIcfgContainer [2021-03-24 11:09:19,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:09:19,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:09:19,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:09:19,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:09:19,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:09:18" (1/3) ... [2021-03-24 11:09:19,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662713e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:19, skipping insertion in model container [2021-03-24 11:09:19,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:09:19" (2/3) ... [2021-03-24 11:09:19,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662713e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:09:19, skipping insertion in model container [2021-03-24 11:09:19,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:09:19" (3/3) ... [2021-03-24 11:09:19,804 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_pso.opt.i [2021-03-24 11:09:19,809 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:09:19,812 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:09:19,812 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:09:19,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,836 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,836 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,837 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,838 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,839 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,840 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,841 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,842 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,843 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,843 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,845 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,849 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,851 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,851 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,851 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,851 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,853 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,853 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:09:19,854 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:09:19,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 11:09:19,887 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:09:19,887 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:09:19,887 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:09:19,887 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:09:19,887 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:09:19,887 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:09:19,887 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:09:19,888 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:09:19,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 11:09:19,949 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-03-24 11:09:19,949 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:19,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-03-24 11:09:19,955 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 11:09:19,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:19,961 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:09:19,970 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:19,972 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:19,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 73 transitions, 158 flow [2021-03-24 11:09:19,990 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-24 11:09:19,990 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:19,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:09:19,993 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-24 11:09:21,291 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-24 11:09:21,292 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-24 11:09:21,294 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1334 [2021-03-24 11:09:21,317 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-24 11:09:21,318 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:21,318 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:21,319 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:21,319 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:21,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:21,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1692446056, now seen corresponding path program 1 times [2021-03-24 11:09:21,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:21,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185345280] [2021-03-24 11:09:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:21,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:21,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:21,606 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:21,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:21,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185345280] [2021-03-24 11:09:21,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:21,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:09:21,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868279853] [2021-03-24 11:09:21,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 11:09:21,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:21,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 11:09:21,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 11:09:21,647 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:21,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:21,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:21,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:21,710 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-24 11:09:21,710 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:09:21,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 606 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 216. Up to 76 conditions per place. [2021-03-24 11:09:21,713 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 6 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-24 11:09:21,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 96 flow [2021-03-24 11:09:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-24 11:09:21,724 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8467153284671532 [2021-03-24 11:09:21,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-24 11:09:21,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-24 11:09:21,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:21,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-24 11:09:21,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,738 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 348 transitions. [2021-03-24 11:09:21,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 96 flow [2021-03-24 11:09:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 11:09:21,743 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2021-03-24 11:09:21,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-24 11:09:21,745 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-24 11:09:21,745 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 95 flow [2021-03-24 11:09:21,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,746 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:21,746 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:21,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:09:21,746 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:21,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:21,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2088650593, now seen corresponding path program 1 times [2021-03-24 11:09:21,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:21,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121831169] [2021-03-24 11:09:21,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:21,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:21,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:21,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:21,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:21,808 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:21,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:21,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121831169] [2021-03-24 11:09:21,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:21,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:21,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856012249] [2021-03-24 11:09:21,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:21,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:21,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:21,821 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:21,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:21,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:21,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:21,857 INFO L129 PetriNetUnfolder]: 29/98 cut-off events. [2021-03-24 11:09:21,857 INFO L130 PetriNetUnfolder]: For 28/205 co-relation queries the response was YES. [2021-03-24 11:09:21,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 98 events. 29/98 cut-off events. For 28/205 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 344 event pairs, 2 based on Foata normal form. 3/91 useless extension candidates. Maximal degree in co-relation 206. Up to 53 conditions per place. [2021-03-24 11:09:21,858 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 11 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-03-24 11:09:21,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 135 flow [2021-03-24 11:09:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 11:09:21,861 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442822384428224 [2021-03-24 11:09:21,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 11:09:21,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 11:09:21,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:21,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 11:09:21,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,869 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 95 flow. Second operand 3 states and 347 transitions. [2021-03-24 11:09:21,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 135 flow [2021-03-24 11:09:21,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:21,871 INFO L241 Difference]: Finished difference. Result has 41 places, 31 transitions, 101 flow [2021-03-24 11:09:21,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2021-03-24 11:09:21,872 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-24 11:09:21,872 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 101 flow [2021-03-24 11:09:21,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,872 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:21,872 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:21,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:09:21,873 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash -926220483, now seen corresponding path program 1 times [2021-03-24 11:09:21,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:21,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873975063] [2021-03-24 11:09:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:21,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:21,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:21,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:21,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:21,954 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:21,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:21,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:21,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873975063] [2021-03-24 11:09:21,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:21,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:21,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052799949] [2021-03-24 11:09:21,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:21,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:21,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:21,971 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:21,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:21,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:21,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:21,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,001 INFO L129 PetriNetUnfolder]: 21/84 cut-off events. [2021-03-24 11:09:22,001 INFO L130 PetriNetUnfolder]: For 53/269 co-relation queries the response was YES. [2021-03-24 11:09:22,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 84 events. 21/84 cut-off events. For 53/269 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 295 event pairs, 5 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 184. Up to 41 conditions per place. [2021-03-24 11:09:22,009 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 11 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-03-24 11:09:22,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 144 flow [2021-03-24 11:09:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 11:09:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 11:09:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 11:09:22,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442822384428224 [2021-03-24 11:09:22,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 11:09:22,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 11:09:22,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 11:09:22,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,016 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 101 flow. Second operand 3 states and 347 transitions. [2021-03-24 11:09:22,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 144 flow [2021-03-24 11:09:22,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:09:22,018 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 106 flow [2021-03-24 11:09:22,018 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-24 11:09:22,018 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-03-24 11:09:22,018 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 106 flow [2021-03-24 11:09:22,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,019 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:09:22,019 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash -858627847, now seen corresponding path program 1 times [2021-03-24 11:09:22,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205938841] [2021-03-24 11:09:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,084 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205938841] [2021-03-24 11:09:22,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:22,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898507419] [2021-03-24 11:09:22,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:22,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:22,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:22,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:22,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:22,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,136 INFO L129 PetriNetUnfolder]: 47/153 cut-off events. [2021-03-24 11:09:22,136 INFO L130 PetriNetUnfolder]: For 137/715 co-relation queries the response was YES. [2021-03-24 11:09:22,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 153 events. 47/153 cut-off events. For 137/715 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 706 event pairs, 6 based on Foata normal form. 13/157 useless extension candidates. Maximal degree in co-relation 365. Up to 74 conditions per place. [2021-03-24 11:09:22,137 INFO L132 encePairwiseOnDemand]: 129/137 looper letters, 10 selfloop transitions, 13 changer transitions 0/41 dead transitions. [2021-03-24 11:09:22,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 41 transitions, 198 flow [2021-03-24 11:09:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:09:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:09:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2021-03-24 11:09:22,139 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8131386861313868 [2021-03-24 11:09:22,139 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2021-03-24 11:09:22,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2021-03-24 11:09:22,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2021-03-24 11:09:22,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,143 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 106 flow. Second operand 5 states and 557 transitions. [2021-03-24 11:09:22,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 41 transitions, 198 flow [2021-03-24 11:09:22,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:09:22,145 INFO L241 Difference]: Finished difference. Result has 47 places, 38 transitions, 192 flow [2021-03-24 11:09:22,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2021-03-24 11:09:22,145 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2021-03-24 11:09:22,145 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 192 flow [2021-03-24 11:09:22,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,146 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,146 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:09:22,146 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1717502377, now seen corresponding path program 2 times [2021-03-24 11:09:22,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383415968] [2021-03-24 11:09:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,184 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383415968] [2021-03-24 11:09:22,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:22,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486683459] [2021-03-24 11:09:22,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:22,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:22,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:22,196 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:22,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:22,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,233 INFO L129 PetriNetUnfolder]: 39/149 cut-off events. [2021-03-24 11:09:22,233 INFO L130 PetriNetUnfolder]: For 406/1293 co-relation queries the response was YES. [2021-03-24 11:09:22,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 149 events. 39/149 cut-off events. For 406/1293 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 743 event pairs, 2 based on Foata normal form. 12/153 useless extension candidates. Maximal degree in co-relation 480. Up to 70 conditions per place. [2021-03-24 11:09:22,235 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 12 selfloop transitions, 4 changer transitions 8/42 dead transitions. [2021-03-24 11:09:22,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 272 flow [2021-03-24 11:09:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-03-24 11:09:22,237 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2021-03-24 11:09:22,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,242 INFO L185 Difference]: Start difference. First operand has 47 places, 38 transitions, 192 flow. Second operand 4 states and 444 transitions. [2021-03-24 11:09:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 272 flow [2021-03-24 11:09:22,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:09:22,249 INFO L241 Difference]: Finished difference. Result has 51 places, 30 transitions, 149 flow [2021-03-24 11:09:22,249 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=51, PETRI_TRANSITIONS=30} [2021-03-24 11:09:22,249 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2021-03-24 11:09:22,249 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 30 transitions, 149 flow [2021-03-24 11:09:22,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,250 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,250 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:09:22,250 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1211691521, now seen corresponding path program 1 times [2021-03-24 11:09:22,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009135609] [2021-03-24 11:09:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,327 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009135609] [2021-03-24 11:09:22,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:22,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398889362] [2021-03-24 11:09:22,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:22,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:22,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:22,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:22,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 30 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:22,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,377 INFO L129 PetriNetUnfolder]: 17/91 cut-off events. [2021-03-24 11:09:22,377 INFO L130 PetriNetUnfolder]: For 307/499 co-relation queries the response was YES. [2021-03-24 11:09:22,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 91 events. 17/91 cut-off events. For 307/499 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 372 event pairs, 3 based on Foata normal form. 10/98 useless extension candidates. Maximal degree in co-relation 273. Up to 35 conditions per place. [2021-03-24 11:09:22,378 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 9 selfloop transitions, 4 changer transitions 4/35 dead transitions. [2021-03-24 11:09:22,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 35 transitions, 226 flow [2021-03-24 11:09:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2021-03-24 11:09:22,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2021-03-24 11:09:22,380 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2021-03-24 11:09:22,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,383 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,383 INFO L185 Difference]: Start difference. First operand has 51 places, 30 transitions, 149 flow. Second operand 4 states and 444 transitions. [2021-03-24 11:09:22,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 35 transitions, 226 flow [2021-03-24 11:09:22,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 152 flow, removed 18 selfloop flow, removed 11 redundant places. [2021-03-24 11:09:22,386 INFO L241 Difference]: Finished difference. Result has 45 places, 29 transitions, 108 flow [2021-03-24 11:09:22,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2021-03-24 11:09:22,387 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-24 11:09:22,387 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 108 flow [2021-03-24 11:09:22,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,387 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:09:22,388 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,388 INFO L82 PathProgramCache]: Analyzing trace with hash -679193110, now seen corresponding path program 1 times [2021-03-24 11:09:22,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125857323] [2021-03-24 11:09:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,445 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125857323] [2021-03-24 11:09:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:22,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234461198] [2021-03-24 11:09:22,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:22,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:22,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 11:09:22,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 11:09:22,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,475 INFO L129 PetriNetUnfolder]: 3/39 cut-off events. [2021-03-24 11:09:22,475 INFO L130 PetriNetUnfolder]: For 35/41 co-relation queries the response was YES. [2021-03-24 11:09:22,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 39 events. 3/39 cut-off events. For 35/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 73. Up to 12 conditions per place. [2021-03-24 11:09:22,476 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 7 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-03-24 11:09:22,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 31 transitions, 143 flow [2021-03-24 11:09:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2021-03-24 11:09:22,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8375912408759124 [2021-03-24 11:09:22,478 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2021-03-24 11:09:22,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2021-03-24 11:09:22,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2021-03-24 11:09:22,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,482 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,482 INFO L185 Difference]: Start difference. First operand has 45 places, 29 transitions, 108 flow. Second operand 4 states and 459 transitions. [2021-03-24 11:09:22,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 31 transitions, 143 flow [2021-03-24 11:09:22,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 127 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 11:09:22,483 INFO L241 Difference]: Finished difference. Result has 45 places, 29 transitions, 107 flow [2021-03-24 11:09:22,483 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2021-03-24 11:09:22,484 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2021-03-24 11:09:22,484 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 107 flow [2021-03-24 11:09:22,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,484 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,484 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:09:22,484 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1295394148, now seen corresponding path program 1 times [2021-03-24 11:09:22,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351612170] [2021-03-24 11:09:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,539 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351612170] [2021-03-24 11:09:22,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:09:22,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998597408] [2021-03-24 11:09:22,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:09:22,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:09:22,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:09:22,553 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:22,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:22,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,587 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-03-24 11:09:22,587 INFO L130 PetriNetUnfolder]: For 46/52 co-relation queries the response was YES. [2021-03-24 11:09:22,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 53 events. 4/53 cut-off events. For 46/52 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 0 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 108. Up to 16 conditions per place. [2021-03-24 11:09:22,588 INFO L132 encePairwiseOnDemand]: 129/137 looper letters, 7 selfloop transitions, 8 changer transitions 1/34 dead transitions. [2021-03-24 11:09:22,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 34 transitions, 167 flow [2021-03-24 11:09:22,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:09:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:09:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2021-03-24 11:09:22,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8058394160583942 [2021-03-24 11:09:22,590 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2021-03-24 11:09:22,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2021-03-24 11:09:22,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2021-03-24 11:09:22,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 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) [2021-03-24 11:09:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,593 INFO L185 Difference]: Start difference. First operand has 45 places, 29 transitions, 107 flow. Second operand 5 states and 552 transitions. [2021-03-24 11:09:22,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 34 transitions, 167 flow [2021-03-24 11:09:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 157 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:09:22,595 INFO L241 Difference]: Finished difference. Result has 49 places, 32 transitions, 155 flow [2021-03-24 11:09:22,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2021-03-24 11:09:22,596 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2021-03-24 11:09:22,596 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 155 flow [2021-03-24 11:09:22,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,596 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:09:22,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:09:22,596 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1346781180, now seen corresponding path program 2 times [2021-03-24 11:09:22,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391722893] [2021-03-24 11:09:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,658 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391722893] [2021-03-24 11:09:22,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:22,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719183640] [2021-03-24 11:09:22,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:22,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:22,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:22,678 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 11:09:22,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 11:09:22,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,702 INFO L129 PetriNetUnfolder]: 2/50 cut-off events. [2021-03-24 11:09:22,702 INFO L130 PetriNetUnfolder]: For 93/110 co-relation queries the response was YES. [2021-03-24 11:09:22,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 50 events. 2/50 cut-off events. For 93/110 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 132 event pairs, 0 based on Foata normal form. 4/53 useless extension candidates. Maximal degree in co-relation 119. Up to 15 conditions per place. [2021-03-24 11:09:22,703 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 4 selfloop transitions, 5 changer transitions 5/32 dead transitions. [2021-03-24 11:09:22,703 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 32 transitions, 183 flow [2021-03-24 11:09:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:09:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:09:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-03-24 11:09:22,705 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7985401459854015 [2021-03-24 11:09:22,705 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-03-24 11:09:22,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-03-24 11:09:22,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-03-24 11:09:22,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,708 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,708 INFO L185 Difference]: Start difference. First operand has 49 places, 32 transitions, 155 flow. Second operand 5 states and 547 transitions. [2021-03-24 11:09:22,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 32 transitions, 183 flow [2021-03-24 11:09:22,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 32 transitions, 175 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 11:09:22,712 INFO L241 Difference]: Finished difference. Result has 52 places, 27 transitions, 126 flow [2021-03-24 11:09:22,712 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=27} [2021-03-24 11:09:22,712 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2021-03-24 11:09:22,712 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 27 transitions, 126 flow [2021-03-24 11:09:22,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:09:22,713 INFO L263 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] [2021-03-24 11:09:22,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:09:22,713 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:09:22,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:09:22,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1160181840, now seen corresponding path program 1 times [2021-03-24 11:09:22,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:09:22,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624132052] [2021-03-24 11:09:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:09:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:09:22,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:09:22,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:09:22,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:09:22,764 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:09:22,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:09:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:09:22,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624132052] [2021-03-24 11:09:22,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:09:22,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:09:22,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491793697] [2021-03-24 11:09:22,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:09:22,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:09:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:09:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:09:22,778 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2021-03-24 11:09:22,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 27 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:09:22,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2021-03-24 11:09:22,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:09:22,789 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-24 11:09:22,789 INFO L130 PetriNetUnfolder]: For 64/65 co-relation queries the response was YES. [2021-03-24 11:09:22,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 26 events. 0/26 cut-off events. For 64/65 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-24 11:09:22,790 INFO L132 encePairwiseOnDemand]: 133/137 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 11:09:22,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 26 transitions, 126 flow [2021-03-24 11:09:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:09:22,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:09:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2021-03-24 11:09:22,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8193430656934306 [2021-03-24 11:09:22,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2021-03-24 11:09:22,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2021-03-24 11:09:22,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:09:22,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2021-03-24 11:09:22,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,794 INFO L185 Difference]: Start difference. First operand has 52 places, 27 transitions, 126 flow. Second operand 4 states and 449 transitions. [2021-03-24 11:09:22,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 26 transitions, 126 flow [2021-03-24 11:09:22,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 94 flow, removed 3 selfloop flow, removed 12 redundant places. [2021-03-24 11:09:22,795 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-24 11:09:22,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-24 11:09:22,796 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-03-24 11:09:22,796 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-24 11:09:22,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:09:22,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:09:22,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:09:22 BasicIcfg [2021-03-24 11:09:22,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:09:22,801 INFO L168 Benchmark]: Toolchain (without parser) took 3998.17 ms. Allocated memory was 255.9 MB in the beginning and 402.7 MB in the end (delta: 146.8 MB). Free memory was 233.2 MB in the beginning and 356.0 MB in the end (delta: -122.8 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,803 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 188.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:09:22,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.93 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 233.2 MB in the beginning and 297.9 MB in the end (delta: -64.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.59 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,805 INFO L168 Benchmark]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 294.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,805 INFO L168 Benchmark]: RCFGBuilder took 374.03 ms. Allocated memory is still 335.5 MB. Free memory was 294.1 MB in the beginning and 309.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,807 INFO L168 Benchmark]: TraceAbstraction took 3000.48 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 308.9 MB in the beginning and 356.0 MB in the end (delta: -47.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-24 11:09:22,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.6 MB in the end (delta: 188.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 522.93 ms. Allocated memory was 255.9 MB in the beginning and 335.5 MB in the end (delta: 79.7 MB). Free memory was 233.2 MB in the beginning and 297.9 MB in the end (delta: -64.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.59 ms. Allocated memory is still 335.5 MB. Free memory was 297.9 MB in the beginning and 295.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 294.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 374.03 ms. Allocated memory is still 335.5 MB. Free memory was 294.1 MB in the beginning and 309.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3000.48 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 308.9 MB in the beginning and 356.0 MB in the end (delta: -47.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1319.6ms, 85 PlacesBefore, 40 PlacesAfterwards, 73 TransitionsBefore, 27 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1076, positive: 1024, positive conditional: 0, positive unconditional: 1024, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, positive: 667, positive conditional: 0, positive unconditional: 667, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1076, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2913.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 481.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1410.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 59 SDslu, 41 SDs, 0 SdLazy, 77 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=4, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 35.6ms SsaConstructionTime, 194.0ms SatisfiabilityAnalysisTime, 592.5ms InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...