/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 18:51:12,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 18:51:12,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 18:51:12,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 18:51:12,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 18:51:12,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 18:51:12,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 18:51:12,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 18:51:12,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 18:51:12,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 18:51:12,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 18:51:12,491 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 18:51:12,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 18:51:12,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 18:51:12,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 18:51:12,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 18:51:12,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 18:51:12,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 18:51:12,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 18:51:12,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 18:51:12,507 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-SemanticLbe.epf [2021-03-24 18:51:12,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 18:51:12,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 18:51:12,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 18:51:12,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 18:51:12,528 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 18:51:12,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 18:51:12,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 18:51:12,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 18:51:12,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 18:51:12,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 18:51:12,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 18:51:12,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 18:51:12,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 18:51:12,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 18:51:12,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 18:51:12,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 18:51:12,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 18:51:12,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 18:51:12,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 18:51:12,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 18:51:12,880 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 18:51:12,881 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 18:51:12,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-24 18:51:12,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6c1649b9/8fdfa79ee79a42b1829158b46988a045/FLAG8f008168e [2021-03-24 18:51:13,539 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 18:51:13,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-24 18:51:13,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6c1649b9/8fdfa79ee79a42b1829158b46988a045/FLAG8f008168e [2021-03-24 18:51:13,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6c1649b9/8fdfa79ee79a42b1829158b46988a045 [2021-03-24 18:51:13,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 18:51:13,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 18:51:13,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 18:51:13,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 18:51:13,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 18:51:13,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:51:13" (1/1) ... [2021-03-24 18:51:13,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318a8f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:13, skipping insertion in model container [2021-03-24 18:51:13,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 06:51:13" (1/1) ... [2021-03-24 18:51:13,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 18:51:14,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 18:51:14,347 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-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-24 18:51:14,353 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-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-24 18:51:14,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:51:14,368 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 18:51:14,402 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-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-24 18:51:14,408 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-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-24 18:51:14,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 18:51:14,480 INFO L208 MainTranslator]: Completed translation [2021-03-24 18:51:14,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14 WrapperNode [2021-03-24 18:51:14,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 18:51:14,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 18:51:14,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 18:51:14,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 18:51:14,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 18:51:14,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 18:51:14,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 18:51:14,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 18:51:14,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (1/1) ... [2021-03-24 18:51:14,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 18:51:14,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 18:51:14,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 18:51:14,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 18:51:14,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (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 18:51:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 18:51:14,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 18:51:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 18:51:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 18:51:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 18:51:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 18:51:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 18:51:14,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 18:51:14,666 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 18:51:15,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 18:51:15,273 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-03-24 18:51:15,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:51:15 BoogieIcfgContainer [2021-03-24 18:51:15,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 18:51:15,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 18:51:15,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 18:51:15,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 18:51:15,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 06:51:13" (1/3) ... [2021-03-24 18:51:15,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6a491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:51:15, skipping insertion in model container [2021-03-24 18:51:15,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 06:51:14" (2/3) ... [2021-03-24 18:51:15,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6a491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 06:51:15, skipping insertion in model container [2021-03-24 18:51:15,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 06:51:15" (3/3) ... [2021-03-24 18:51:15,281 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-03-24 18:51:15,286 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 18:51:15,303 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 18:51:15,304 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 18:51:15,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,322 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,323 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,324 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,325 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,326 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,327 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,327 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,328 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 18:51:15,330 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 18:51:15,346 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 18:51:15,364 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 18:51:15,364 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 18:51:15,364 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 18:51:15,364 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 18:51:15,364 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 18:51:15,365 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 18:51:15,365 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 18:51:15,365 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 18:51:15,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-03-24 18:51:15,394 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-24 18:51:15,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:51:15,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-24 18:51:15,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2021-03-24 18:51:15,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 95 flow [2021-03-24 18:51:15,402 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 18:51:15,413 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-24 18:51:15,416 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-24 18:51:15,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 95 flow [2021-03-24 18:51:15,427 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-24 18:51:15,427 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:51:15,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-24 18:51:15,429 INFO L142 LiptonReduction]: Number of co-enabled transitions 378 [2021-03-24 18:51:16,606 INFO L154 LiptonReduction]: Checked pairs total: 452 [2021-03-24 18:51:16,606 INFO L156 LiptonReduction]: Total number of compositions: 27 [2021-03-24 18:51:16,608 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1207 [2021-03-24 18:51:16,616 INFO L129 PetriNetUnfolder]: 2/13 cut-off events. [2021-03-24 18:51:16,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:51:16,617 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:51:16,617 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:51:16,618 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:51:16,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:51:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash 942571052, now seen corresponding path program 1 times [2021-03-24 18:51:16,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:51:16,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333151371] [2021-03-24 18:51:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:51:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:51:16,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:16,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:16,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:16,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:51:16,773 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 18:51:16,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333151371] [2021-03-24 18:51:16,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:51:16,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 18:51:16,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138936955] [2021-03-24 18:51:16,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:51:16,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:51:16,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:51:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:51:16,794 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 74 [2021-03-24 18:51:16,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 18:51:16,796 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:51:16,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 74 [2021-03-24 18:51:16,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:51:16,829 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-24 18:51:16,829 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:51:16,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 22 events. 2/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 16 event pairs, 0 based on Foata normal form. 5/26 useless extension candidates. Maximal degree in co-relation 20. Up to 5 conditions per place. [2021-03-24 18:51:16,831 INFO L132 encePairwiseOnDemand]: 69/74 looper letters, 2 selfloop transitions, 2 changer transitions 4/21 dead transitions. [2021-03-24 18:51:16,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 55 flow [2021-03-24 18:51:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:51:16,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:51:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2021-03-24 18:51:16,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8918918918918919 [2021-03-24 18:51:16,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2021-03-24 18:51:16,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2021-03-24 18:51:16,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:51:16,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2021-03-24 18:51:16,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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 18:51:16,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 18:51:16,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 18:51:16,879 INFO L185 Difference]: Start difference. First operand has 24 places, 22 transitions, 47 flow. Second operand 3 states and 198 transitions. [2021-03-24 18:51:16,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 55 flow [2021-03-24 18:51:16,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 18:51:16,892 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-03-24 18:51:16,894 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-03-24 18:51:16,894 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2021-03-24 18:51:16,895 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-03-24 18:51:16,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 18:51:16,895 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:51:16,895 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:51:16,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 18:51:16,895 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:51:16,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:51:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -427295442, now seen corresponding path program 1 times [2021-03-24 18:51:16,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:51:16,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243211886] [2021-03-24 18:51:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:51:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:51:16,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:16,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:16,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:16,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:51:16,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:16,981 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 18:51:16,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243211886] [2021-03-24 18:51:16,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:51:16,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 18:51:16,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151557836] [2021-03-24 18:51:16,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 18:51:16,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:51:16,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 18:51:16,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 18:51:16,989 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 74 [2021-03-24 18:51:16,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 18:51:16,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:51:16,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 74 [2021-03-24 18:51:16,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:51:17,001 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-03-24 18:51:17,002 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 18:51:17,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 18 events. 2/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2021-03-24 18:51:17,003 INFO L132 encePairwiseOnDemand]: 70/74 looper letters, 2 selfloop transitions, 2 changer transitions 1/17 dead transitions. [2021-03-24 18:51:17,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 50 flow [2021-03-24 18:51:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 18:51:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 18:51:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2021-03-24 18:51:17,009 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9054054054054054 [2021-03-24 18:51:17,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2021-03-24 18:51:17,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2021-03-24 18:51:17,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:51:17,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2021-03-24 18:51:17,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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 18:51:17,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 18:51:17,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 18:51:17,013 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 201 transitions. [2021-03-24 18:51:17,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 50 flow [2021-03-24 18:51:17,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 17 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 18:51:17,014 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 46 flow [2021-03-24 18:51:17,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2021-03-24 18:51:17,015 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2021-03-24 18:51:17,015 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 46 flow [2021-03-24 18:51:17,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 18:51:17,016 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:51:17,016 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:51:17,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 18:51:17,016 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:51:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:51:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1664066350, now seen corresponding path program 1 times [2021-03-24 18:51:17,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:51:17,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054231810] [2021-03-24 18:51:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:51:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:51:17,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:17,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:17,101 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 18:51:17,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 18:51:17,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:17,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 18:51:17,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:17,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:17,114 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 18:51:17,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054231810] [2021-03-24 18:51:17,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:51:17,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 18:51:17,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697197000] [2021-03-24 18:51:17,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 18:51:17,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:51:17,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 18:51:17,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 18:51:17,116 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-24 18:51:17,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 18:51:17,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:51:17,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-24 18:51:17,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:51:17,142 INFO L129 PetriNetUnfolder]: 4/24 cut-off events. [2021-03-24 18:51:17,143 INFO L130 PetriNetUnfolder]: For 10/13 co-relation queries the response was YES. [2021-03-24 18:51:17,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 24 events. 4/24 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 40. Up to 8 conditions per place. [2021-03-24 18:51:17,143 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 3 selfloop transitions, 8 changer transitions 0/19 dead transitions. [2021-03-24 18:51:17,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 78 flow [2021-03-24 18:51:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 18:51:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 18:51:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2021-03-24 18:51:17,145 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2021-03-24 18:51:17,145 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 228 transitions. [2021-03-24 18:51:17,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 228 transitions. [2021-03-24 18:51:17,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:51:17,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 228 transitions. [2021-03-24 18:51:17,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 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 18:51:17,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 18:51:17,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 18:51:17,148 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 46 flow. Second operand 4 states and 228 transitions. [2021-03-24 18:51:17,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 78 flow [2021-03-24 18:51:17,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 18:51:17,149 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 73 flow [2021-03-24 18:51:17,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2021-03-24 18:51:17,149 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2021-03-24 18:51:17,150 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 73 flow [2021-03-24 18:51:17,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 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 18:51:17,153 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 18:51:17,153 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 18:51:17,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 18:51:17,155 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 18:51:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 18:51:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash 587808555, now seen corresponding path program 1 times [2021-03-24 18:51:17,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 18:51:17,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638522283] [2021-03-24 18:51:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 18:51:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 18:51:17,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:17,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 18:51:17,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 18:51:17,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 18:51:17,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 18:51:17,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 18:51:17,242 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 18:51:17,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638522283] [2021-03-24 18:51:17,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 18:51:17,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 18:51:17,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446511581] [2021-03-24 18:51:17,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 18:51:17,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 18:51:17,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 18:51:17,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 18:51:17,244 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 74 [2021-03-24 18:51:17,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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 18:51:17,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 18:51:17,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 74 [2021-03-24 18:51:17,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 18:51:17,252 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-03-24 18:51:17,253 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2021-03-24 18:51:17,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 23 events. 4/23 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 2/25 useless extension candidates. Maximal degree in co-relation 40. Up to 8 conditions per place. [2021-03-24 18:51:17,253 INFO L132 encePairwiseOnDemand]: 71/74 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-24 18:51:17,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 72 flow [2021-03-24 18:51:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 18:51:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 18:51:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 255 transitions. [2021-03-24 18:51:17,255 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8614864864864865 [2021-03-24 18:51:17,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 255 transitions. [2021-03-24 18:51:17,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 255 transitions. [2021-03-24 18:51:17,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 18:51:17,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 255 transitions. [2021-03-24 18:51:17,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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 18:51:17,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 18:51:17,257 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 74.0) internal successors, (370), 5 states have internal predecessors, (370), 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 18:51:17,257 INFO L185 Difference]: Start difference. First operand has 24 places, 18 transitions, 73 flow. Second operand 4 states and 255 transitions. [2021-03-24 18:51:17,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 72 flow [2021-03-24 18:51:17,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 18:51:17,258 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-03-24 18:51:17,258 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-03-24 18:51:17,258 INFO L343 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-03-24 18:51:17,258 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2021-03-24 18:51:17,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 63.75) internal successors, (255), 4 states have internal predecessors, (255), 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 18:51:17,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 18:51:17,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 06:51:17 BasicIcfg [2021-03-24 18:51:17,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 18:51:17,263 INFO L168 Benchmark]: Toolchain (without parser) took 3286.76 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.7 MB in the beginning and 197.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 134.6 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,263 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 18:51:17,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.56 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.7 MB in the beginning and 317.6 MB in the end (delta: -84.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,265 INFO L168 Benchmark]: Boogie Preprocessor took 33.93 ms. Allocated memory is still 354.4 MB. Free memory was 315.6 MB in the beginning and 314.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,265 INFO L168 Benchmark]: RCFGBuilder took 698.40 ms. Allocated memory is still 354.4 MB. Free memory was 314.1 MB in the beginning and 311.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,266 INFO L168 Benchmark]: TraceAbstraction took 1986.01 ms. Allocated memory is still 354.4 MB. Free memory was 310.9 MB in the beginning and 197.0 MB in the end (delta: 113.8 MB). Peak memory consumption was 114.9 MB. Max. memory is 16.0 GB. [2021-03-24 18:51:17,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 504.56 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.7 MB in the beginning and 317.6 MB in the end (delta: -84.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.86 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.93 ms. Allocated memory is still 354.4 MB. Free memory was 315.6 MB in the beginning and 314.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 698.40 ms. Allocated memory is still 354.4 MB. Free memory was 314.1 MB in the beginning and 311.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1986.01 ms. Allocated memory is still 354.4 MB. Free memory was 310.9 MB in the beginning and 197.0 MB in the end (delta: 113.8 MB). Peak memory consumption was 114.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1190.0ms, 48 PlacesBefore, 24 PlacesAfterwards, 46 TransitionsBefore, 22 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 27 TotalNumberOfCompositions, 452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 381, positive: 358, positive conditional: 0, positive unconditional: 358, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 256, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 256, positive: 245, positive conditional: 0, positive unconditional: 245, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 256, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 110, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 381, positive: 113, positive conditional: 0, positive unconditional: 113, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 256, unknown conditional: 0, unknown unconditional: 256] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: 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 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1899.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 181.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1248.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 3 SDslu, 2 SDs, 0 SdLazy, 21 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=3, InterpolantAutomatonStates: 14, 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: 11.7ms SsaConstructionTime, 74.2ms SatisfiabilityAnalysisTime, 230.9ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...