/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 07:39:34,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 07:39:34,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 07:39:34,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 07:39:34,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 07:39:34,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 07:39:34,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 07:39:34,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 07:39:34,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 07:39:34,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 07:39:34,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 07:39:34,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 07:39:34,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 07:39:34,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 07:39:34,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 07:39:34,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 07:39:34,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 07:39:34,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 07:39:34,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 07:39:34,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 07:39:34,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 07:39:34,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 07:39:34,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 07:39:34,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 07:39:34,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 07:39:34,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 07:39:34,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 07:39:34,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 07:39:34,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 07:39:34,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 07:39:34,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 07:39:34,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 07:39:34,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 07:39:34,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 07:39:34,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 07:39:34,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 07:39:34,354 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-RepeatedVariableLbe.epf [2021-03-25 07:39:34,385 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 07:39:34,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 07:39:34,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 07:39:34,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 07:39:34,389 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 07:39:34,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 07:39:34,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 07:39:34,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 07:39:34,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 07:39:34,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 07:39:34,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 07:39:34,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 07:39:34,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 07:39:34,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:34,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 07:39:34,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 07:39:34,393 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 07:39:34,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 07:39:34,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 07:39:34,393 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 07:39:34,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 07:39:34,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 07:39:34,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 07:39:34,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 07:39:34,744 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 07:39:34,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-03-25 07:39:34,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14863de1b/b2d239d3d04b49f5b9d1cc9703845ee6/FLAG3e0f26178 [2021-03-25 07:39:35,220 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 07:39:35,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/11a-double-end.c [2021-03-25 07:39:35,221 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 07:39:35,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14863de1b/b2d239d3d04b49f5b9d1cc9703845ee6/FLAG3e0f26178 [2021-03-25 07:39:35,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14863de1b/b2d239d3d04b49f5b9d1cc9703845ee6 [2021-03-25 07:39:35,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 07:39:35,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 07:39:35,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:35,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 07:39:35,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 07:39:35,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ece6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35, skipping insertion in model container [2021-03-25 07:39:35,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 07:39:35,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 07:39:35,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:35,788 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 07:39:35,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 07:39:35,811 INFO L208 MainTranslator]: Completed translation [2021-03-25 07:39:35,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35 WrapperNode [2021-03-25 07:39:35,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 07:39:35,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:35,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 07:39:35,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 07:39:35,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 07:39:35,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 07:39:35,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 07:39:35,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 07:39:35,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... [2021-03-25 07:39:35,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 07:39:35,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 07:39:35,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 07:39:35,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 07:39:35,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 07:39:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 07:39:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 07:39:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 07:39:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-25 07:39:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-25 07:39:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 07:39:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 07:39:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 07:39:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 07:39:35,957 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 07:39:36,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 07:39:36,172 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 07:39:36,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:36 BoogieIcfgContainer [2021-03-25 07:39:36,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 07:39:36,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 07:39:36,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 07:39:36,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 07:39:36,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 07:39:35" (1/3) ... [2021-03-25 07:39:36,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c34f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:36, skipping insertion in model container [2021-03-25 07:39:36,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 07:39:35" (2/3) ... [2021-03-25 07:39:36,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c34f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 07:39:36, skipping insertion in model container [2021-03-25 07:39:36,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 07:39:36" (3/3) ... [2021-03-25 07:39:36,193 INFO L111 eAbstractionObserver]: Analyzing ICFG 11a-double-end.c [2021-03-25 07:39:36,197 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 07:39:36,200 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 07:39:36,201 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 07:39:36,232 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,232 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,232 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,232 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,233 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,234 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,235 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,235 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,236 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,236 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 07:39:36,241 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 07:39:36,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-25 07:39:36,291 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 07:39:36,291 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 07:39:36,292 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 07:39:36,292 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 07:39:36,292 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 07:39:36,292 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 07:39:36,292 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 07:39:36,292 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 07:39:36,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 25 transitions, 55 flow [2021-03-25 07:39:36,330 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-25 07:39:36,330 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:36,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:36,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 25 transitions, 55 flow [2021-03-25 07:39:36,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 41 flow [2021-03-25 07:39:36,346 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:36,352 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 41 flow [2021-03-25 07:39:36,356 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 41 flow [2021-03-25 07:39:36,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 41 flow [2021-03-25 07:39:36,373 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 07:39:36,374 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:36,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 19 events. 0/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-25 07:39:36,376 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 07:39:36,888 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-25 07:39:36,888 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 07:39:36,890 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 545 [2021-03-25 07:39:36,896 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-25 07:39:36,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:36,897 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:36,897 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 07:39:36,897 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:36,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1597126882, now seen corresponding path program 1 times [2021-03-25 07:39:36,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:36,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980144413] [2021-03-25 07:39:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:36,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:36,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:36,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:37,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:37,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980144413] [2021-03-25 07:39:37,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:37,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:37,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379056975] [2021-03-25 07:39:37,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:37,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:37,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:37,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:37,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 36 [2021-03-25 07:39:37,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:37,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 36 [2021-03-25 07:39:37,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:37,048 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-25 07:39:37,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:37,049 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 11 events. 0/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 2/13 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-25 07:39:37,049 INFO L132 encePairwiseOnDemand]: 33/36 looper letters, 2 selfloop transitions, 2 changer transitions 1/9 dead transitions. [2021-03-25 07:39:37,050 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 31 flow [2021-03-25 07:39:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2021-03-25 07:39:37,059 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-25 07:39:37,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 81 transitions. [2021-03-25 07:39:37,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 81 transitions. [2021-03-25 07:39:37,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:37,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 81 transitions. [2021-03-25 07:39:37,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,068 INFO L185 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 3 states and 81 transitions. [2021-03-25 07:39:37,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 31 flow [2021-03-25 07:39:37,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 30 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 07:39:37,072 INFO L241 Difference]: Finished difference. Result has 14 places, 8 transitions, 26 flow [2021-03-25 07:39:37,073 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=14, PETRI_TRANSITIONS=8} [2021-03-25 07:39:37,074 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, 2 predicate places. [2021-03-25 07:39:37,074 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:37,074 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 14 places, 8 transitions, 26 flow [2021-03-25 07:39:37,075 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 14 places, 8 transitions, 26 flow [2021-03-25 07:39:37,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 14 places, 8 transitions, 26 flow [2021-03-25 07:39:37,077 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-03-25 07:39:37,078 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 07:39:37,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 8 events. 0/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:37,078 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 07:39:37,489 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 07:39:37,490 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 07:39:37,490 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 416 [2021-03-25 07:39:37,494 INFO L480 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 20 flow [2021-03-25 07:39:37,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,496 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 07:39:37,496 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-25 07:39:37,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 07:39:37,502 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 07:39:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 07:39:37,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2028675206, now seen corresponding path program 1 times [2021-03-25 07:39:37,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 07:39:37,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538573983] [2021-03-25 07:39:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 07:39:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 07:39:37,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:37,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 07:39:37,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 07:39:37,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 07:39:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 07:39:37,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538573983] [2021-03-25 07:39:37,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 07:39:37,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 07:39:37,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587957005] [2021-03-25 07:39:37,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 07:39:37,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 07:39:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 07:39:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 07:39:37,550 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 39 [2021-03-25 07:39:37,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 5 transitions, 20 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 07:39:37,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 39 [2021-03-25 07:39:37,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 07:39:37,560 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-25 07:39:37,561 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 07:39:37,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 4 events. 0/4 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-25 07:39:37,561 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-03-25 07:39:37,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 4 transitions, 22 flow [2021-03-25 07:39:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 07:39:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 07:39:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2021-03-25 07:39:37,564 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2021-03-25 07:39:37,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 79 transitions. [2021-03-25 07:39:37,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 79 transitions. [2021-03-25 07:39:37,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 07:39:37,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 79 transitions. [2021-03-25 07:39:37,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,569 INFO L185 Difference]: Start difference. First operand has 11 places, 5 transitions, 20 flow. Second operand 3 states and 79 transitions. [2021-03-25 07:39:37,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 4 transitions, 22 flow [2021-03-25 07:39:37,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 07:39:37,571 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:37,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2021-03-25 07:39:37,571 INFO L343 CegarLoopForPetriNet]: 12 programPoint places, -3 predicate places. [2021-03-25 07:39:37,571 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 07:39:37,571 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:37,572 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 9 places, 0 transitions, 0 flow [2021-03-25 07:39:37,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:37,572 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 07:39:37,572 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 07:39:37,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 07:39:37,573 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 07:39:37,573 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 07:39:37,573 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 07:39:37,573 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 07:39:37,574 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 07:39:37,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 07:39:37,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 07:39:37,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 07:39:37 BasicIcfg [2021-03-25 07:39:37,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 07:39:37,579 INFO L168 Benchmark]: Toolchain (without parser) took 1951.11 ms. Allocated memory is still 350.2 MB. Free memory was 313.7 MB in the beginning and 199.2 MB in the end (delta: 114.5 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:37,580 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 350.2 MB. Free memory was 331.8 MB in the beginning and 331.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:37,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.48 ms. Allocated memory is still 350.2 MB. Free memory was 313.5 MB in the beginning and 329.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:37,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 350.2 MB. Free memory was 329.4 MB in the beginning and 333.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:37,586 INFO L168 Benchmark]: Boogie Preprocessor took 20.86 ms. Allocated memory is still 350.2 MB. Free memory was 333.4 MB in the beginning and 333.4 MB in the end (delta: 2.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 07:39:37,587 INFO L168 Benchmark]: RCFGBuilder took 282.52 ms. Allocated memory is still 350.2 MB. Free memory was 333.4 MB in the beginning and 319.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:37,588 INFO L168 Benchmark]: TraceAbstraction took 1404.05 ms. Allocated memory is still 350.2 MB. Free memory was 318.7 MB in the beginning and 199.2 MB in the end (delta: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 16.0 GB. [2021-03-25 07:39:37,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 350.2 MB. Free memory was 331.8 MB in the beginning and 331.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 182.48 ms. Allocated memory is still 350.2 MB. Free memory was 313.5 MB in the beginning and 329.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.23 ms. Allocated memory is still 350.2 MB. Free memory was 329.4 MB in the beginning and 333.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.86 ms. Allocated memory is still 350.2 MB. Free memory was 333.4 MB in the beginning and 333.4 MB in the end (delta: 2.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 282.52 ms. Allocated memory is still 350.2 MB. Free memory was 333.4 MB in the beginning and 319.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1404.05 ms. Allocated memory is still 350.2 MB. Free memory was 318.7 MB in the beginning and 199.2 MB in the end (delta: 119.5 MB). Peak memory consumption was 119.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 532.9ms, 23 PlacesBefore, 12 PlacesAfterwards, 19 TransitionsBefore, 8 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 3 FixpointIterations, 6 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 415.1ms, 14 PlacesBefore, 11 PlacesAfterwards, 8 TransitionsBefore, 5 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0ms, 9 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 36]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1288.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 72.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 601.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=1, InterpolantAutomatonStates: 6, 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: 4.8ms SsaConstructionTime, 21.0ms SatisfiabilityAnalysisTime, 72.7ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...