/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/02-atomic-function.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:14:49,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:14:49,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:14:49,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:14:49,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:14:49,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:14:49,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:14:49,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:14:49,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:14:49,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:14:49,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:14:49,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:14:49,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:14:49,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:14:49,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:14:49,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:14:49,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:14:49,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:14:49,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:14:49,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:14:49,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:14:49,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:14:49,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:14:49,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:14:49,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 13:14:49,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 13:14:49,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 13:14:49,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 13:14:49,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 13:14:49,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 13:14:49,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:14:49,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:14:49,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:14:49,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:14:49,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:14:49,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:14:49,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:14:49,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:14:49,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:14:49,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:14:49,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:14:49,266 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-VariableLbe.epf [2021-03-24 13:14:49,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:14:49,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:14:49,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:14:49,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:14:49,295 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:14:49,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:14:49,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:14:49,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:14:49,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:49,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:14:49,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:14:49,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:14:49,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:14:49,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:14:49,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:14:49,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:14:49,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:14:49,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:14:49,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:14:49,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 13:14:49,669 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 13:14:49,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/02-atomic-function.c [2021-03-24 13:14:49,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9a49314/5925e5d3259e4608b42d15de51707b5c/FLAGbf2aa91d4 [2021-03-24 13:14:50,085 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 13:14:50,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/02-atomic-function.c [2021-03-24 13:14:50,086 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:50,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9a49314/5925e5d3259e4608b42d15de51707b5c/FLAGbf2aa91d4 [2021-03-24 13:14:50,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9a49314/5925e5d3259e4608b42d15de51707b5c [2021-03-24 13:14:50,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:14:50,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 13:14:50,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:50,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 13:14:50,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 13:14:50,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d1fb60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50, skipping insertion in model container [2021-03-24 13:14:50,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 13:14:50,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 13:14:50,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:50,660 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 13:14:50,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:50,678 INFO L208 MainTranslator]: Completed translation [2021-03-24 13:14:50,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50 WrapperNode [2021-03-24 13:14:50,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:50,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:50,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:14:50,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:14:50,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:50,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:14:50,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:14:50,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:14:50,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... [2021-03-24 13:14:50,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:14:50,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:14:50,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:14:50,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:14:50,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 13:14:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-03-24 13:14:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-03-24 13:14:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:14:50,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:14:50,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 13:14:50,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 13:14:50,785 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:14:50,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:14:50,980 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 13:14:50,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:50 BoogieIcfgContainer [2021-03-24 13:14:50,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:14:50,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:14:50,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:14:50,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:14:50,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 01:14:50" (1/3) ... [2021-03-24 13:14:50,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd33b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:50, skipping insertion in model container [2021-03-24 13:14:50,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:50" (2/3) ... [2021-03-24 13:14:50,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd33b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:50, skipping insertion in model container [2021-03-24 13:14:50,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:50" (3/3) ... [2021-03-24 13:14:50,986 INFO L111 eAbstractionObserver]: Analyzing ICFG 02-atomic-function.c [2021-03-24 13:14:50,990 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:14:50,999 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:14:50,999 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:14:51,042 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,043 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,044 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,044 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,044 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,044 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,046 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,046 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,046 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,046 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:51,052 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:14:51,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 13:14:51,095 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:14:51,095 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:14:51,095 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:14:51,095 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:14:51,095 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:14:51,095 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:14:51,095 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:14:51,095 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:14:51,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 53 flow [2021-03-24 13:14:51,134 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-03-24 13:14:51,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:51,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 23 events. 1/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2021-03-24 13:14:51,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 53 flow [2021-03-24 13:14:51,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 37 flow [2021-03-24 13:14:51,148 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:14:51,154 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-24 13:14:51,157 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 17 transitions, 37 flow [2021-03-24 13:14:51,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 37 flow [2021-03-24 13:14:51,167 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-03-24 13:14:51,167 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:51,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-24 13:14:51,168 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-24 13:14:51,571 INFO L154 LiptonReduction]: Checked pairs total: 40 [2021-03-24 13:14:51,572 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-24 13:14:51,573 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 426 [2021-03-24 13:14:51,580 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-03-24 13:14:51,580 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:51,580 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:51,581 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-24 13:14:51,581 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:51,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:51,585 INFO L82 PathProgramCache]: Analyzing trace with hash 3251414, now seen corresponding path program 1 times [2021-03-24 13:14:51,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:51,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763371226] [2021-03-24 13:14:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:51,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:51,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:14:51,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:51,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:14:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:51,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763371226] [2021-03-24 13:14:51,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:51,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 13:14:51,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621577101] [2021-03-24 13:14:51,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:14:51,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:14:51,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:14:51,731 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 36 [2021-03-24 13:14:51,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:14:51,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:51,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 36 [2021-03-24 13:14:51,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:51,743 INFO L129 PetriNetUnfolder]: 1/6 cut-off events. [2021-03-24 13:14:51,743 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:14:51,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 6 events. 1/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 1 based on Foata normal form. 2/8 useless extension candidates. Maximal degree in co-relation 8. Up to 5 conditions per place. [2021-03-24 13:14:51,744 INFO L132 encePairwiseOnDemand]: 34/36 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-03-24 13:14:51,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 4 transitions, 17 flow [2021-03-24 13:14:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:14:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:14:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2021-03-24 13:14:51,753 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2021-03-24 13:14:51,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2021-03-24 13:14:51,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2021-03-24 13:14:51,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:51,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2021-03-24 13:14:51,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:14:51,763 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) [2021-03-24 13:14:51,764 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) [2021-03-24 13:14:51,765 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 73 transitions. [2021-03-24 13:14:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 4 transitions, 17 flow [2021-03-24 13:14:51,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 4 transitions, 16 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:14:51,769 INFO L241 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2021-03-24 13:14:51,770 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, 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} [2021-03-24 13:14:51,770 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 0 predicate places. [2021-03-24 13:14:51,771 INFO L480 AbstractCegarLoop]: Abstraction has has 9 places, 0 transitions, 0 flow [2021-03-24 13:14:51,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:14:51,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:14:51,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:14:51 BasicIcfg [2021-03-24 13:14:51,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:14:51,791 INFO L168 Benchmark]: Toolchain (without parser) took 1259.25 ms. Allocated memory is still 327.2 MB. Free memory was 289.9 MB in the beginning and 202.1 MB in the end (delta: 87.8 MB). Peak memory consumption was 88.8 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:51,792 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 327.2 MB. Free memory was 308.5 MB in the beginning and 308.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:51,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.67 ms. Allocated memory is still 327.2 MB. Free memory was 289.7 MB in the beginning and 306.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:51,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 327.2 MB. Free memory was 306.0 MB in the beginning and 310.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:51,795 INFO L168 Benchmark]: Boogie Preprocessor took 9.73 ms. Allocated memory is still 327.2 MB. Free memory was 310.7 MB in the beginning and 310.1 MB in the end (delta: 567.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:51,795 INFO L168 Benchmark]: RCFGBuilder took 239.90 ms. Allocated memory is still 327.2 MB. Free memory was 310.1 MB in the beginning and 295.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:51,795 INFO L168 Benchmark]: TraceAbstraction took 792.05 ms. Allocated memory is still 327.2 MB. Free memory was 295.4 MB in the beginning and 202.1 MB in the end (delta: 93.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:51,797 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 327.2 MB. Free memory was 308.5 MB in the beginning and 308.5 MB in the end (delta: 73.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 160.67 ms. Allocated memory is still 327.2 MB. Free memory was 289.7 MB in the beginning and 306.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 327.2 MB. Free memory was 306.0 MB in the beginning and 310.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.73 ms. Allocated memory is still 327.2 MB. Free memory was 310.7 MB in the beginning and 310.1 MB in the end (delta: 567.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 239.90 ms. Allocated memory is still 327.2 MB. Free memory was 310.1 MB in the beginning and 295.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 792.05 ms. Allocated memory is still 327.2 MB. Free memory was 295.4 MB in the beginning and 202.1 MB in the end (delta: 93.3 MB). Peak memory consumption was 94.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 414.4ms, 21 PlacesBefore, 9 PlacesAfterwards, 17 TransitionsBefore, 5 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 40 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 4, negative conditional: 0, negative unconditional: 4, 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 - PositiveResult [Line: 33]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 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: 681.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 43.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 482.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 2 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 3.5ms SsaConstructionTime, 16.2ms SatisfiabilityAnalysisTime, 44.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...