/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 08:59:54,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 08:59:54,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 08:59:54,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 08:59:54,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 08:59:54,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 08:59:54,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 08:59:54,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 08:59:54,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 08:59:54,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 08:59:54,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 08:59:54,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 08:59:54,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 08:59:54,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 08:59:54,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 08:59:54,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 08:59:54,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 08:59:54,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 08:59:54,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 08:59:54,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 08:59:54,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 08:59:54,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 08:59:54,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 08:59:54,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 08:59:54,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 08:59:54,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 08:59:54,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 08:59:54,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 08:59:54,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 08:59:54,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 08:59:54,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 08:59:54,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 08:59:54,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 08:59:54,647 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 08:59:54,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 08:59:54,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 08:59:54,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 08:59:54,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 08:59:54,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 08:59:54,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 08:59:54,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 08:59:54,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 08:59:54,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 08:59:54,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 08:59:54,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 08:59:54,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:59:54,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 08:59:54,651 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 08:59:54,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 08:59:54,652 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 08:59:54,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 08:59:54,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 08:59:54,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 08:59:54,948 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 08:59:54,948 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 08:59:54,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-26 08:59:54,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d8fb137/66182993e54d41ac9251b2596bf7c1d0/FLAG798e647ba [2021-03-26 08:59:55,459 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 08:59:55,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-03-26 08:59:55,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d8fb137/66182993e54d41ac9251b2596bf7c1d0/FLAG798e647ba [2021-03-26 08:59:55,489 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98d8fb137/66182993e54d41ac9251b2596bf7c1d0 [2021-03-26 08:59:55,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 08:59:55,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 08:59:55,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 08:59:55,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 08:59:55,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 08:59:55,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:59:55" (1/1) ... [2021-03-26 08:59:55,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d55733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:55, skipping insertion in model container [2021-03-26 08:59:55,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:59:55" (1/1) ... [2021-03-26 08:59:55,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 08:59:55,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 08:59:55,691 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:59:55,877 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/18_read_write_lock.i[31161,31174] [2021-03-26 08:59:55,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:59:55,894 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 08:59:55,922 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:59:55,947 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/18_read_write_lock.i[31161,31174] [2021-03-26 08:59:55,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:59:56,026 INFO L208 MainTranslator]: Completed translation [2021-03-26 08:59:56,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56 WrapperNode [2021-03-26 08:59:56,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 08:59:56,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 08:59:56,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 08:59:56,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 08:59:56,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 08:59:56,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 08:59:56,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 08:59:56,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 08:59:56,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... [2021-03-26 08:59:56,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 08:59:56,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 08:59:56,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 08:59:56,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 08:59:56,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:59:56,194 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-26 08:59:56,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-26 08:59:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 08:59:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 08:59:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 08:59:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 08:59:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 08:59:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 08:59:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 08:59:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 08:59:56,199 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 08:59:56,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 08:59:56,688 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-26 08:59:56,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:59:56 BoogieIcfgContainer [2021-03-26 08:59:56,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 08:59:56,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 08:59:56,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 08:59:56,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 08:59:56,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 08:59:55" (1/3) ... [2021-03-26 08:59:56,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65205769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:59:56, skipping insertion in model container [2021-03-26 08:59:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:59:56" (2/3) ... [2021-03-26 08:59:56,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65205769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:59:56, skipping insertion in model container [2021-03-26 08:59:56,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:59:56" (3/3) ... [2021-03-26 08:59:56,696 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-03-26 08:59:56,701 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 08:59:56,705 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 08:59:56,706 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 08:59:56,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,722 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,722 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:59:56,730 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 08:59:56,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 08:59:56,763 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 08:59:56,763 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 08:59:56,763 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 08:59:56,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 08:59:56,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 08:59:56,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 08:59:56,764 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 08:59:56,764 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 08:59:56,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 101 flow [2021-03-26 08:59:56,840 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-03-26 08:59:56,840 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:59:56,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2021-03-26 08:59:56,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 101 flow [2021-03-26 08:59:56,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 34 transitions, 71 flow [2021-03-26 08:59:56,846 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:59:56,856 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 34 transitions, 71 flow [2021-03-26 08:59:56,859 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 34 transitions, 71 flow [2021-03-26 08:59:56,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 34 transitions, 71 flow [2021-03-26 08:59:56,868 INFO L129 PetriNetUnfolder]: 0/34 cut-off events. [2021-03-26 08:59:56,869 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:59:56,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 34 events. 0/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 08:59:56,870 INFO L142 LiptonReduction]: Number of co-enabled transitions 144 [2021-03-26 08:59:57,866 INFO L154 LiptonReduction]: Checked pairs total: 119 [2021-03-26 08:59:57,867 INFO L156 LiptonReduction]: Total number of compositions: 22 [2021-03-26 08:59:57,869 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1024 [2021-03-26 08:59:57,877 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-26 08:59:57,877 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:59:57,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:59:57,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:59:57,879 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:59:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:59:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash 273070329, now seen corresponding path program 1 times [2021-03-26 08:59:57,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:59:57,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212141971] [2021-03-26 08:59:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:59:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:59:58,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:59:58,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:59:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:59:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:59:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:59:58,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212141971] [2021-03-26 08:59:58,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:59:58,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:59:58,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877715147] [2021-03-26 08:59:58,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 08:59:58,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:59:58,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 08:59:58,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 08:59:58,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 70 [2021-03-26 08:59:58,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:59:58,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 70 [2021-03-26 08:59:58,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:59:58,096 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-26 08:59:58,096 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:59:58,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 16 events. 1/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 1 based on Foata normal form. 2/17 useless extension candidates. Maximal degree in co-relation 17. Up to 8 conditions per place. [2021-03-26 08:59:58,098 INFO L132 encePairwiseOnDemand]: 67/70 looper letters, 3 selfloop transitions, 2 changer transitions 1/13 dead transitions. [2021-03-26 08:59:58,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 41 flow [2021-03-26 08:59:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 08:59:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 08:59:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2021-03-26 08:59:58,107 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.719047619047619 [2021-03-26 08:59:58,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2021-03-26 08:59:58,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2021-03-26 08:59:58,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:59:58,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2021-03-26 08:59:58,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,118 INFO L185 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 151 transitions. [2021-03-26 08:59:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 41 flow [2021-03-26 08:59:58,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 08:59:58,122 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 34 flow [2021-03-26 08:59:58,124 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-03-26 08:59:58,124 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2021-03-26 08:59:58,125 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:59:58,125 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 12 transitions, 34 flow [2021-03-26 08:59:58,125 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 12 transitions, 34 flow [2021-03-26 08:59:58,125 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 12 transitions, 34 flow [2021-03-26 08:59:58,128 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-26 08:59:58,128 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 08:59:58,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 12 events. 0/12 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 08:59:58,128 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 08:59:58,619 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:59:58,620 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 08:59:58,620 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 495 [2021-03-26 08:59:58,622 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 7 transitions, 24 flow [2021-03-26 08:59:58,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,622 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:59:58,622 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:59:58,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 08:59:58,623 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:59:58,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:59:58,625 INFO L82 PathProgramCache]: Analyzing trace with hash -124754102, now seen corresponding path program 1 times [2021-03-26 08:59:58,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:59:58,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205210071] [2021-03-26 08:59:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:59:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:59:58,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:59:58,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:59:58,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:59:58,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:59:58,754 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-26 08:59:58,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-26 08:59:58,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:59:58,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:59:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:59:58,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205210071] [2021-03-26 08:59:58,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:59:58,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 08:59:58,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936450433] [2021-03-26 08:59:58,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 08:59:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:59:58,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 08:59:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 08:59:58,763 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 75 [2021-03-26 08:59:58,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 7 transitions, 24 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:59:58,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 75 [2021-03-26 08:59:58,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:59:58,770 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 08:59:58,771 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-26 08:59:58,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 5 events. 0/5 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-26 08:59:58,771 INFO L132 encePairwiseOnDemand]: 72/75 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-26 08:59:58,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 5 transitions, 19 flow [2021-03-26 08:59:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 08:59:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 08:59:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2021-03-26 08:59:58,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8366666666666667 [2021-03-26 08:59:58,774 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2021-03-26 08:59:58,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2021-03-26 08:59:58,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:59:58,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2021-03-26 08:59:58,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,778 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,778 INFO L185 Difference]: Start difference. First operand has 13 places, 7 transitions, 24 flow. Second operand 4 states and 251 transitions. [2021-03-26 08:59:58,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 5 transitions, 19 flow [2021-03-26 08:59:58,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 5 transitions, 17 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:59:58,779 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-26 08:59:58,779 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=13, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-03-26 08:59:58,779 INFO L343 CegarLoopForPetriNet]: 16 programPoint places, -4 predicate places. [2021-03-26 08:59:58,780 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:59:58,780 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-26 08:59:58,780 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 12 places, 0 transitions, 0 flow [2021-03-26 08:59:58,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 08:59:58,780 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 08:59:58,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:59:58,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 08:59:58,781 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 08:59:58,781 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:59:58,781 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:59:58,781 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 08:59:58,782 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 08:59:58,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:59:58,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 08:59:58,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 08:59:58 BasicIcfg [2021-03-26 08:59:58,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 08:59:58,787 INFO L168 Benchmark]: Toolchain (without parser) took 3292.60 ms. Allocated memory was 255.9 MB in the beginning and 480.2 MB in the end (delta: 224.4 MB). Free memory was 232.8 MB in the beginning and 453.6 MB in the end (delta: -220.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:59:58,787 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:59:58,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.41 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 232.8 MB in the beginning and 353.2 MB in the end (delta: -120.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 08:59:58,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.41 ms. Allocated memory is still 390.1 MB. Free memory was 353.2 MB in the beginning and 351.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:59:58,789 INFO L168 Benchmark]: Boogie Preprocessor took 24.84 ms. Allocated memory is still 390.1 MB. Free memory was 351.1 MB in the beginning and 349.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 08:59:58,789 INFO L168 Benchmark]: RCFGBuilder took 588.19 ms. Allocated memory is still 390.1 MB. Free memory was 349.6 MB in the beginning and 321.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-26 08:59:58,790 INFO L168 Benchmark]: TraceAbstraction took 2094.53 ms. Allocated memory was 390.1 MB in the beginning and 480.2 MB in the end (delta: 90.2 MB). Free memory was 320.3 MB in the beginning and 453.6 MB in the end (delta: -133.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:59:58,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 531.41 ms. Allocated memory was 255.9 MB in the beginning and 390.1 MB in the end (delta: 134.2 MB). Free memory was 232.8 MB in the beginning and 353.2 MB in the end (delta: -120.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.41 ms. Allocated memory is still 390.1 MB. Free memory was 353.2 MB in the beginning and 351.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.84 ms. Allocated memory is still 390.1 MB. Free memory was 351.1 MB in the beginning and 349.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 588.19 ms. Allocated memory is still 390.1 MB. Free memory was 349.6 MB in the beginning and 321.0 MB in the end (delta: 28.6 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2094.53 ms. Allocated memory was 390.1 MB in the beginning and 480.2 MB in the end (delta: 90.2 MB). Free memory was 320.3 MB in the beginning and 453.6 MB in the end (delta: -133.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1008.6ms, 38 PlacesBefore, 16 PlacesAfterwards, 34 TransitionsBefore, 12 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 22 TotalNumberOfCompositions, 119 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 99, positive: 93, positive conditional: 93, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 99, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 99, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 89, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 89, positive: 81, positive conditional: 0, positive unconditional: 81, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 99, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 89, unknown conditional: 0, unknown unconditional: 89] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 494.8ms, 18 PlacesBefore, 13 PlacesAfterwards, 12 TransitionsBefore, 7 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 3 FixpointIterations, 5 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 12 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Eliminated conditions: 0 - PositiveResult [Line: 738]: 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, 48 locations, 1 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: 2024.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 76.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1110.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, InterpolantAutomatonStates: 7, 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: 14.1ms SsaConstructionTime, 45.7ms SatisfiabilityAnalysisTime, 149.9ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 39 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...