/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/concurrent/pthreads/regression/atomic/09a-return-after-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:44:30,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:44:30,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:44:30,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:44:30,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:44:30,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:44:30,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:44:30,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:44:30,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:44:30,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:44:30,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:44:30,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:44:30,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:44:30,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:44:30,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:44:30,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:44:30,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:44:30,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:44:30,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:44:30,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:44:30,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:44:30,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:44:30,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:44:30,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:44:30,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-12 21:44:30,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 21:44:30,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 21:44:30,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 21:44:30,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 21:44:30,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 21:44:30,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 21:44:30,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 21:44:30,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 21:44:30,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:44:30,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:44:30,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:44:30,494 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 [2021-08-12 21:44:30,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:44:30,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:44:30,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:44:30,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:44:30,529 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:44:30,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:44:30,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:44:30,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:44:30,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:44:30,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:44:30,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:44:30,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:44:30,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:44:30,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:44:30,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:44:30,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:44:30,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:44:30,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:44:30,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:44:30,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:44:30,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-12 21:44:30,816 INFO L275 PluginConnector]: CDTParser initialized [2021-08-12 21:44:30,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/09a-return-after-end.c [2021-08-12 21:44:30,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732694d53/58c57411782d4a6ab8810de35dd895e4/FLAG28909c94f [2021-08-12 21:44:31,262 INFO L306 CDTParser]: Found 1 translation units. [2021-08-12 21:44:31,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/09a-return-after-end.c [2021-08-12 21:44:31,263 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-08-12 21:44:31,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732694d53/58c57411782d4a6ab8810de35dd895e4/FLAG28909c94f [2021-08-12 21:44:31,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/732694d53/58c57411782d4a6ab8810de35dd895e4 [2021-08-12 21:44:31,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:44:31,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-12 21:44:31,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-12 21:44:31,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-12 21:44:31,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-12 21:44:31,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42157ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31, skipping insertion in model container [2021-08-12 21:44:31,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-12 21:44:31,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-12 21:44:31,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 21:44:31,450 INFO L203 MainTranslator]: Completed pre-run [2021-08-12 21:44:31,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-12 21:44:31,468 INFO L208 MainTranslator]: Completed translation [2021-08-12 21:44:31,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31 WrapperNode [2021-08-12 21:44:31,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-12 21:44:31,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:44:31,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:44:31,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:44:31,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:44:31,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:44:31,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:44:31,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:44:31,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (1/1) ... [2021-08-12 21:44:31,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:44:31,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:44:31,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:44:31,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:44:31,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (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 [2021-08-12 21:44:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-12 21:44:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-12 21:44:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-12 21:44:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-08-12 21:44:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-08-12 21:44:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:44:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:44:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-12 21:44:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-12 21:44:31,615 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:44:31,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:44:31,833 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-12 21:44:31,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:44:31 BoogieIcfgContainer [2021-08-12 21:44:31,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:44:31,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:44:31,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:44:31,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:44:31,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.08 09:44:31" (1/3) ... [2021-08-12 21:44:31,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4243f8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:44:31, skipping insertion in model container [2021-08-12 21:44:31,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.08 09:44:31" (2/3) ... [2021-08-12 21:44:31,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4243f8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:44:31, skipping insertion in model container [2021-08-12 21:44:31,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:44:31" (3/3) ... [2021-08-12 21:44:31,839 INFO L111 eAbstractionObserver]: Analyzing ICFG 09a-return-after-end.c [2021-08-12 21:44:31,843 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:44:31,843 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 21:44:31,844 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:44:31,862 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,862 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,862 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,862 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,863 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,864 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,864 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,864 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,864 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,864 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,865 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,865 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,866 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,866 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-12 21:44:31,871 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-12 21:44:31,886 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 21:44:31,910 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:44:31,910 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:44:31,910 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:44:31,911 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:44:31,911 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:44:31,911 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:44:31,911 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:44:31,911 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:44:31,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 28 transitions, 61 flow [2021-08-12 21:44:31,947 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-08-12 21:44:31,947 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:31,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 27 events. 1/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-08-12 21:44:31,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 28 transitions, 61 flow [2021-08-12 21:44:31,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 57 flow [2021-08-12 21:44:31,960 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-08-12 21:44:31,960 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:31,960 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:44:31,961 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:44:31,961 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:44:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:44:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash -816529340, now seen corresponding path program 1 times [2021-08-12 21:44:31,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:44:31,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045071512] [2021-08-12 21:44:31,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:44:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:44:32,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:44:32,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:44:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:44:32,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:44:32,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045071512] [2021-08-12 21:44:32,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045071512] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:44:32,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:44:32,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 21:44:32,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475116601] [2021-08-12 21:44:32,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:44:32,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:44:32,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:44:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:44:32,140 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 28 [2021-08-12 21:44:32,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-08-12 21:44:32,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:44:32,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 28 [2021-08-12 21:44:32,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:44:32,179 INFO L129 PetriNetUnfolder]: 2/38 cut-off events. [2021-08-12 21:44:32,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-12 21:44:32,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 38 events. 2/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 1 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 34. Up to 5 conditions per place. [2021-08-12 21:44:32,181 INFO L132 encePairwiseOnDemand]: 25/28 looper letters, 1 selfloop transitions, 2 changer transitions 8/28 dead transitions. [2021-08-12 21:44:32,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 71 flow [2021-08-12 21:44:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:44:32,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:44:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2021-08-12 21:44:32,190 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-12 21:44:32,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2021-08-12 21:44:32,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2021-08-12 21:44:32,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:44:32,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2021-08-12 21:44:32,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-08-12 21:44:32,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-08-12 21:44:32,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-08-12 21:44:32,200 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-08-12 21:44:32,200 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 71 flow [2021-08-12 21:44:32,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-08-12 21:44:32,200 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:44:32,200 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:44:32,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:44:32,201 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:44:32,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:44:32,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1505155654, now seen corresponding path program 1 times [2021-08-12 21:44:32,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:44:32,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600440720] [2021-08-12 21:44:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:44:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:44:32,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:44:32,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:44:32,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:44:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:44:32,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:44:32,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600440720] [2021-08-12 21:44:32,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600440720] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:44:32,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:44:32,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:44:32,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083812856] [2021-08-12 21:44:32,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-12 21:44:32,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:44:32,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-12 21:44:32,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-12 21:44:32,237 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-08-12 21:44:32,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-08-12 21:44:32,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:44:32,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-08-12 21:44:32,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:44:32,272 INFO L129 PetriNetUnfolder]: 2/47 cut-off events. [2021-08-12 21:44:32,273 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-12 21:44:32,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 47 events. 2/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 105 event pairs, 1 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 57. Up to 8 conditions per place. [2021-08-12 21:44:32,273 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 1 selfloop transitions, 4 changer transitions 10/30 dead transitions. [2021-08-12 21:44:32,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 99 flow [2021-08-12 21:44:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-12 21:44:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-12 21:44:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2021-08-12 21:44:32,275 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2021-08-12 21:44:32,275 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 95 transitions. [2021-08-12 21:44:32,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 95 transitions. [2021-08-12 21:44:32,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:44:32,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 95 transitions. [2021-08-12 21:44:32,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2021-08-12 21:44:32,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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) [2021-08-12 21:44:32,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 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) [2021-08-12 21:44:32,277 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-08-12 21:44:32,277 INFO L482 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 99 flow [2021-08-12 21:44:32,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-08-12 21:44:32,278 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:44:32,278 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 21:44:32,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:44:32,278 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 21:44:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:44:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1496778214, now seen corresponding path program 2 times [2021-08-12 21:44:32,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:44:32,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103046168] [2021-08-12 21:44:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:44:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:44:32,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:44:32,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:44:32,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:44:32,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:44:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:44:32,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:44:32,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103046168] [2021-08-12 21:44:32,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103046168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:44:32,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:44:32,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:44:32,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172074901] [2021-08-12 21:44:32,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:44:32,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:44:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:44:32,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:44:32,310 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 28 [2021-08-12 21:44:32,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-12 21:44:32,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:44:32,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 28 [2021-08-12 21:44:32,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:44:32,327 INFO L129 PetriNetUnfolder]: 1/37 cut-off events. [2021-08-12 21:44:32,328 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2021-08-12 21:44:32,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 37 events. 1/37 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 1 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2021-08-12 21:44:32,328 INFO L132 encePairwiseOnDemand]: 26/28 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-08-12 21:44:32,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 89 flow [2021-08-12 21:44:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:44:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:44:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2021-08-12 21:44:32,329 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-08-12 21:44:32,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2021-08-12 21:44:32,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2021-08-12 21:44:32,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:44:32,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2021-08-12 21:44:32,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2021-08-12 21:44:32,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-08-12 21:44:32,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2021-08-12 21:44:32,331 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-08-12 21:44:32,331 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 89 flow [2021-08-12 21:44:32,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-08-12 21:44:32,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:44:32,415 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 7875 in 77247523ns [2021-08-12 21:44:32,417 INFO L113 kiGriesValidityCheck]: 9#(or (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np27_1) (not v_np9_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) v_np8_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) (not v_np5_1) (not v_np7_1) (not v_np27_1) (not v_np9_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) v_np3_1 (not v_np28_1) (not v_np0_1) v_np8_1)) [2021-08-12 21:44:32,427 INFO L113 kiGriesValidityCheck]: 17#(and v_np29_1 (not v_np25_1) (<= 1 ~y~0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) [2021-08-12 21:44:32,434 INFO L113 kiGriesValidityCheck]: 28#(or (and v_np29_1 (not v_np25_1) (<= 1 ~y~0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np10_1 (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (<= 1 ~y~0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) v_np18_1 (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (<= 1 ~y~0) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) v_np16_1 (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 v_np9_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np8_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (= ~y~0 0) v_np11_1 (not v_np1_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1) v_np22_1) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) v_np13_1 (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) (= ~y~0 0) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) v_np1_1 (not v_np26_1) (not v_np28_1) (not v_np0_1)) (and v_np29_1 (not v_np25_1) (not v_np22_1) (not v_np23_1) (not v_np20_1) v_np27_1 (not v_np5_1) (not v_np7_1) (not v_np9_1) (not v_np8_1) (= ~y~0 0) (not v_np1_1) (not v_np11_1) (not v_np14_1) (not v_np6_1) (not v_np24_1) (not v_np4_1) (not v_np12_1) (not v_np13_1) (not v_np10_1) (not v_np16_1) (not v_np15_1) (<= 1 ~x~0) (not v_np2_1) (not v_np17_1) (not v_np21_1) (not v_np18_1) (not v_np19_1) (not v_np26_1) v_np3_1 (not v_np28_1) (not v_np0_1))) [2021-08-12 21:44:32,476 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 67294809ns [2021-08-12 21:44:32,477 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Invalid Owicki-Gries annotation at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:111) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:161) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-08-12 21:44:32,481 INFO L168 Benchmark]: Toolchain (without parser) took 1172.48 ms. Allocated memory is still 219.2 MB. Free memory was 182.4 MB in the beginning and 131.0 MB in the end (delta: 51.4 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,482 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 200.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 21:44:32,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.50 ms. Allocated memory is still 219.2 MB. Free memory was 182.1 MB in the beginning and 173.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 219.2 MB. Free memory was 173.6 MB in the beginning and 201.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,484 INFO L168 Benchmark]: Boogie Preprocessor took 17.92 ms. Allocated memory is still 219.2 MB. Free memory was 201.8 MB in the beginning and 201.1 MB in the end (delta: 673.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,486 INFO L168 Benchmark]: RCFGBuilder took 289.15 ms. Allocated memory is still 219.2 MB. Free memory was 201.1 MB in the beginning and 187.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,487 INFO L168 Benchmark]: TraceAbstraction took 644.41 ms. Allocated memory is still 219.2 MB. Free memory was 186.5 MB in the beginning and 131.0 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-08-12 21:44:32,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 200.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 159.50 ms. Allocated memory is still 219.2 MB. Free memory was 182.1 MB in the beginning and 173.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.62 ms. Allocated memory is still 219.2 MB. Free memory was 173.6 MB in the beginning and 201.8 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.92 ms. Allocated memory is still 219.2 MB. Free memory was 201.8 MB in the beginning and 201.1 MB in the end (delta: 673.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 289.15 ms. Allocated memory is still 219.2 MB. Free memory was 201.1 MB in the beginning and 187.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 644.41 ms. Allocated memory is still 219.2 MB. Free memory was 186.5 MB in the beginning and 131.0 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Invalid Owicki-Gries annotation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Invalid Owicki-Gries annotation: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.computeOwickiGries(CegarLoopForPetriNet.java:752) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...