/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-231806ee773fbd0554de777ff4074f5592c67ff4-231806e [2021-10-13 22:50:49,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 22:50:49,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 22:50:49,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 22:50:49,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 22:50:49,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 22:50:49,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 22:50:49,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 22:50:49,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 22:50:49,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 22:50:49,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 22:50:49,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 22:50:49,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 22:50:49,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 22:50:49,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 22:50:49,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 22:50:49,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 22:50:49,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 22:50:49,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 22:50:49,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 22:50:49,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 22:50:49,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 22:50:49,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 22:50:49,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 22:50:49,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 22:50:49,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 22:50:49,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 22:50:49,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 22:50:49,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-10-13 22:50:49,587 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 22:50:49,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 22:50:49,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 22:50:49,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 22:50:49,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 22:50:49,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 22:50:49,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:50:49,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 22:50:49,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-13 22:50:49,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-13 22:50:49,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 22:50:49,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 22:50:49,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 22:50:49,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 22:50:49,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 22:50:49,795 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 22:50:49,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-10-13 22:50:49,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c4a1ad/2a3c5f19417248bf96c626616ecd61b6/FLAG27b79e358 [2021-10-13 22:50:50,253 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 22:50:50,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2021-10-13 22:50:50,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c4a1ad/2a3c5f19417248bf96c626616ecd61b6/FLAG27b79e358 [2021-10-13 22:50:50,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f18c4a1ad/2a3c5f19417248bf96c626616ecd61b6 [2021-10-13 22:50:50,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 22:50:50,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 22:50:50,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 22:50:50,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 22:50:50,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 22:50:50,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731cd123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50, skipping insertion in model container [2021-10-13 22:50:50,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 22:50:50,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 22:50:50,484 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-13 22:50:50,580 WARN L228 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] [2021-10-13 22:50:50,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:50:50,600 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 22:50:50,621 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-10-13 22:50:50,635 WARN L228 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] [2021-10-13 22:50:50,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 22:50:50,659 INFO L208 MainTranslator]: Completed translation [2021-10-13 22:50:50,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50 WrapperNode [2021-10-13 22:50:50,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 22:50:50,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 22:50:50,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 22:50:50,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 22:50:50,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 22:50:50,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 22:50:50,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 22:50:50,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 22:50:50,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 22:50:50,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 22:50:50,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 22:50:50,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 22:50:50,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (1/1) ... [2021-10-13 22:50:50,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 22:50:50,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 22:50:50,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 22:50:50,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 22:50:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-10-13 22:50:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-10-13 22:50:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 22:50:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 22:50:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 22:50:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 22:50:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 22:50:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 22:50:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 22:50:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 22:50:50,772 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 22:50:51,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 22:50:51,040 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 22:50:51,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:50:51 BoogieIcfgContainer [2021-10-13 22:50:51,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 22:50:51,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 22:50:51,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 22:50:51,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 22:50:51,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:50:50" (1/3) ... [2021-10-13 22:50:51,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2590f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:50:51, skipping insertion in model container [2021-10-13 22:50:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:50:50" (2/3) ... [2021-10-13 22:50:51,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2590f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:50:51, skipping insertion in model container [2021-10-13 22:50:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:50:51" (3/3) ... [2021-10-13 22:50:51,047 INFO L111 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2021-10-13 22:50:51,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 22:50:51,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 22:50:51,051 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 22:50:51,069 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,070 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,076 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,076 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,077 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 22:50:51,080 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-10-13 22:50:51,124 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 22:50:51,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 22:50:51,131 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 22:50:51,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 107 flow [2021-10-13 22:50:51,176 INFO L129 PetriNetUnfolder]: 1/50 cut-off events. [2021-10-13 22:50:51,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:50:51,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-10-13 22:50:51,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 107 flow [2021-10-13 22:50:51,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 77 flow [2021-10-13 22:50:51,201 INFO L129 PetriNetUnfolder]: 0/36 cut-off events. [2021-10-13 22:50:51,201 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:50:51,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:50:51,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:50:51,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-13 22:50:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:50:51,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1748782142, now seen corresponding path program 1 times [2021-10-13 22:50:51,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:50:51,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942787907] [2021-10-13 22:50:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:50:51,215 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:50:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:50:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:50:51,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:50:51,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942787907] [2021-10-13 22:50:51,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942787907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:50:51,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:50:51,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 22:50:51,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438592506] [2021-10-13 22:50:51,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 22:50:51,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:50:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 22:50:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 22:50:51,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 51 [2021-10-13 22:50:51,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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) [2021-10-13 22:50:51,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:50:51,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 51 [2021-10-13 22:50:51,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:50:51,513 INFO L129 PetriNetUnfolder]: 3/59 cut-off events. [2021-10-13 22:50:51,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-13 22:50:51,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 59 events. 3/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 1 based on Foata normal form. 3/61 useless extension candidates. Maximal degree in co-relation 61. Up to 14 conditions per place. [2021-10-13 22:50:51,515 INFO L132 encePairwiseOnDemand]: 45/51 looper letters, 7 selfloop transitions, 6 changer transitions 3/44 dead transitions. [2021-10-13 22:50:51,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 123 flow [2021-10-13 22:50:51,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 22:50:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-13 22:50:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2021-10-13 22:50:51,527 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151260504201681 [2021-10-13 22:50:51,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 291 transitions. [2021-10-13 22:50:51,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 291 transitions. [2021-10-13 22:50:51,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:50:51,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 291 transitions. [2021-10-13 22:50:51,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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) [2021-10-13 22:50:51,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-10-13 22:50:51,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 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) [2021-10-13 22:50:51,539 INFO L186 Difference]: Start difference. First operand has 41 places, 37 transitions, 77 flow. Second operand 7 states and 291 transitions. [2021-10-13 22:50:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 123 flow [2021-10-13 22:50:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-13 22:50:51,543 INFO L242 Difference]: Finished difference. Result has 51 places, 41 transitions, 114 flow [2021-10-13 22:50:51,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2021-10-13 22:50:51,544 INFO L334 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2021-10-13 22:50:51,545 INFO L470 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 114 flow [2021-10-13 22:50:51,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.333333333333336) internal successors, (242), 6 states have internal predecessors, (242), 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) [2021-10-13 22:50:51,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:50:51,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:50:51,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 22:50:51,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-13 22:50:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:50:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2029870619, now seen corresponding path program 1 times [2021-10-13 22:50:51,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:50:51,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305639463] [2021-10-13 22:50:51,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:50:51,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:50:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:50:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:50:51,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:50:51,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305639463] [2021-10-13 22:50:51,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305639463] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:50:51,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:50:51,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 22:50:51,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977816833] [2021-10-13 22:50:51,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 22:50:51,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:50:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 22:50:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 22:50:51,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 51 [2021-10-13 22:50:51,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-10-13 22:50:51,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:50:51,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 51 [2021-10-13 22:50:51,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:50:51,623 INFO L129 PetriNetUnfolder]: 2/48 cut-off events. [2021-10-13 22:50:51,624 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-13 22:50:51,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 48 events. 2/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 69. Up to 6 conditions per place. [2021-10-13 22:50:51,624 INFO L132 encePairwiseOnDemand]: 48/51 looper letters, 2 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2021-10-13 22:50:51,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 122 flow [2021-10-13 22:50:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 22:50:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-13 22:50:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2021-10-13 22:50:51,625 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9150326797385621 [2021-10-13 22:50:51,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2021-10-13 22:50:51,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2021-10-13 22:50:51,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:50:51,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2021-10-13 22:50:51,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2021-10-13 22:50:51,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2021-10-13 22:50:51,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2021-10-13 22:50:51,631 INFO L186 Difference]: Start difference. First operand has 51 places, 41 transitions, 114 flow. Second operand 3 states and 140 transitions. [2021-10-13 22:50:51,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 122 flow [2021-10-13 22:50:51,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 114 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-13 22:50:51,633 INFO L242 Difference]: Finished difference. Result has 49 places, 41 transitions, 114 flow [2021-10-13 22:50:51,634 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2021-10-13 22:50:51,634 INFO L334 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2021-10-13 22:50:51,634 INFO L470 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 114 flow [2021-10-13 22:50:51,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2021-10-13 22:50:51,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-13 22:50:51,635 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 22:50:51,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 22:50:51,635 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] === [2021-10-13 22:50:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 22:50:51,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1023134555, now seen corresponding path program 2 times [2021-10-13 22:50:51,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 22:50:51,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120397586] [2021-10-13 22:50:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 22:50:51,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 22:50:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 22:50:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 22:50:51,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 22:50:51,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120397586] [2021-10-13 22:50:51,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120397586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 22:50:51,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 22:50:51,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 22:50:51,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572831080] [2021-10-13 22:50:51,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 22:50:51,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 22:50:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 22:50:51,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 22:50:51,710 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 51 [2021-10-13 22:50:51,711 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-10-13 22:50:51,711 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-13 22:50:51,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 51 [2021-10-13 22:50:51,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-13 22:50:51,722 INFO L129 PetriNetUnfolder]: 0/30 cut-off events. [2021-10-13 22:50:51,722 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-10-13 22:50:51,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 30 events. 0/30 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-13 22:50:51,723 INFO L132 encePairwiseOnDemand]: 48/51 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2021-10-13 22:50:51,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 83 flow [2021-10-13 22:50:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 22:50:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-13 22:50:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2021-10-13 22:50:51,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-10-13 22:50:51,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 180 transitions. [2021-10-13 22:50:51,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 180 transitions. [2021-10-13 22:50:51,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 22:50:51,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 180 transitions. [2021-10-13 22:50:51,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2021-10-13 22:50:51,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 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) [2021-10-13 22:50:51,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 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) [2021-10-13 22:50:51,729 INFO L186 Difference]: Start difference. First operand has 49 places, 41 transitions, 114 flow. Second operand 4 states and 180 transitions. [2021-10-13 22:50:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 83 flow [2021-10-13 22:50:51,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 73 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-10-13 22:50:51,730 INFO L242 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-10-13 22:50:51,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-10-13 22:50:51,731 INFO L334 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2021-10-13 22:50:51,731 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-10-13 22:50:51,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-10-13 22:50:51,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 22:50:51,734 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 22:50:51,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 22:50:51,738 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 22:50:51,738 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 22:50:51,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:50:51 BasicIcfg [2021-10-13 22:50:51,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 22:50:51,742 INFO L168 Benchmark]: Toolchain (without parser) took 1461.44 ms. Allocated memory was 186.6 MB in the beginning and 269.5 MB in the end (delta: 82.8 MB). Free memory was 135.2 MB in the beginning and 164.6 MB in the end (delta: -29.4 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,742 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory was 152.9 MB in the beginning and 152.8 MB in the end (delta: 74.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 22:50:51,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.06 ms. Allocated memory was 186.6 MB in the beginning and 269.5 MB in the end (delta: 82.8 MB). Free memory was 135.0 MB in the beginning and 236.4 MB in the end (delta: -101.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 269.5 MB. Free memory was 236.4 MB in the beginning and 234.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,744 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 269.5 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,744 INFO L168 Benchmark]: RCFGBuilder took 332.84 ms. Allocated memory is still 269.5 MB. Free memory was 233.3 MB in the beginning and 217.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,745 INFO L168 Benchmark]: TraceAbstraction took 697.33 ms. Allocated memory is still 269.5 MB. Free memory was 216.5 MB in the beginning and 164.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-10-13 22:50:51,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 186.6 MB. Free memory was 152.9 MB in the beginning and 152.8 MB in the end (delta: 74.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 380.06 ms. Allocated memory was 186.6 MB in the beginning and 269.5 MB in the end (delta: 82.8 MB). Free memory was 135.0 MB in the beginning and 236.4 MB in the end (delta: -101.5 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 269.5 MB. Free memory was 236.4 MB in the beginning and 234.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 269.5 MB. Free memory was 234.3 MB in the beginning and 233.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 332.84 ms. Allocated memory is still 269.5 MB. Free memory was 233.3 MB in the beginning and 217.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 697.33 ms. Allocated memory is still 269.5 MB. Free memory was 216.5 MB in the beginning and 164.6 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 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 with 1 thread instances CFG has 3 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 616.7ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 166.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 50.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 8 SDslu, 13 SDs, 0 SdLazy, 48 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, 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: 12.1ms SsaConstructionTime, 73.2ms SatisfiabilityAnalysisTime, 167.2ms InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-10-13 22:50:51,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...