/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 20:08:13,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 20:08:13,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 20:08:13,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 20:08:13,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 20:08:13,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 20:08:13,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 20:08:13,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 20:08:13,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 20:08:13,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 20:08:13,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 20:08:13,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 20:08:13,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 20:08:13,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 20:08:13,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 20:08:13,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 20:08:13,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 20:08:13,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 20:08:13,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 20:08:13,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 20:08:13,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 20:08:13,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 20:08:13,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 20:08:13,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 20:08:13,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 20:08:13,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 20:08:13,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 20:08:13,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 20:08:13,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 20:08:13,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 20:08:13,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 20:08:13,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 20:08:13,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 20:08:13,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 20:08:13,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 20:08:13,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 20:08:13,907 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-SemanticLbe.epf [2021-03-24 20:08:13,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 20:08:13,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 20:08:13,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 20:08:13,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 20:08:13,928 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 20:08:13,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 20:08:13,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 20:08:13,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 20:08:13,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 20:08:13,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 20:08:13,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 20:08:13,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 20:08:13,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 20:08:13,930 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 20:08:13,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 20:08:13,930 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 20:08:13,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 20:08:13,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 20:08:13,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 20:08:13,931 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 20:08:13,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 20:08:13,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 20:08:13,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 20:08:13,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 20:08:13,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 20:08:13,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 20:08:13,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 20:08:13,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 20:08:13,933 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 20:08:14,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 20:08:14,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 20:08:14,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 20:08:14,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 20:08:14,306 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 20:08:14,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2021-03-24 20:08:14,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f174c461/95beb6b6496b44cba15c5f4e04b3751d/FLAG7742032eb [2021-03-24 20:08:14,983 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 20:08:14,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2021-03-24 20:08:15,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f174c461/95beb6b6496b44cba15c5f4e04b3751d/FLAG7742032eb [2021-03-24 20:08:15,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f174c461/95beb6b6496b44cba15c5f4e04b3751d [2021-03-24 20:08:15,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 20:08:15,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 20:08:15,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 20:08:15,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 20:08:15,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 20:08:15,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:08:15" (1/1) ... [2021-03-24 20:08:15,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7595411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:15, skipping insertion in model container [2021-03-24 20:08:15,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 08:08:15" (1/1) ... [2021-03-24 20:08:15,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 20:08:15,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 20:08:15,905 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2021-03-24 20:08:15,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:08:15,927 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 20:08:15,960 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2021-03-24 20:08:15,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 20:08:16,252 INFO L208 MainTranslator]: Completed translation [2021-03-24 20:08:16,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16 WrapperNode [2021-03-24 20:08:16,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 20:08:16,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 20:08:16,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 20:08:16,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 20:08:16,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 20:08:16,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 20:08:16,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 20:08:16,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 20:08:16,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (1/1) ... [2021-03-24 20:08:16,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 20:08:16,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 20:08:16,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 20:08:16,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 20:08:16,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (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 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 20:08:16,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 20:08:16,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 20:08:16,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 20:08:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 20:08:16,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 20:08:16,457 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 20:08:16,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 20:08:16,905 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-24 20:08:16,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:08:16 BoogieIcfgContainer [2021-03-24 20:08:16,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 20:08:16,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 20:08:16,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 20:08:16,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 20:08:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 08:08:15" (1/3) ... [2021-03-24 20:08:16,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b8ffe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:08:16, skipping insertion in model container [2021-03-24 20:08:16,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 08:08:16" (2/3) ... [2021-03-24 20:08:16,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b8ffe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 08:08:16, skipping insertion in model container [2021-03-24 20:08:16,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 08:08:16" (3/3) ... [2021-03-24 20:08:16,913 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2021-03-24 20:08:16,917 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 20:08:16,921 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-24 20:08:16,921 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 20:08:16,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,942 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,942 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,943 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,944 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,945 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,946 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,947 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,948 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_ldv_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_ldv_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 20:08:16,954 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 20:08:16,970 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 20:08:16,986 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 20:08:16,987 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 20:08:16,987 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 20:08:16,987 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 20:08:16,987 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 20:08:16,987 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 20:08:16,987 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 20:08:16,987 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 20:08:16,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 92 transitions, 192 flow [2021-03-24 20:08:17,025 INFO L129 PetriNetUnfolder]: 5/103 cut-off events. [2021-03-24 20:08:17,025 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 20:08:17,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 103 events. 5/103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 58. Up to 3 conditions per place. [2021-03-24 20:08:17,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 92 transitions, 192 flow [2021-03-24 20:08:17,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 82 transitions, 170 flow [2021-03-24 20:08:17,032 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 20:08:17,045 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 82 transitions, 170 flow [2021-03-24 20:08:17,047 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 82 transitions, 170 flow [2021-03-24 20:08:17,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 170 flow [2021-03-24 20:08:17,061 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-03-24 20:08:17,061 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 20:08:17,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 82 events. 2/82 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 20:08:17,063 INFO L142 LiptonReduction]: Number of co-enabled transitions 420 [2021-03-24 20:08:18,454 INFO L154 LiptonReduction]: Checked pairs total: 292 [2021-03-24 20:08:18,455 INFO L156 LiptonReduction]: Total number of compositions: 67 [2021-03-24 20:08:18,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1426 [2021-03-24 20:08:18,464 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 20:08:18,464 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:08:18,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:08:18,465 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 20:08:18,465 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:08:18,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:08:18,469 INFO L82 PathProgramCache]: Analyzing trace with hash 841359477, now seen corresponding path program 1 times [2021-03-24 20:08:18,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:08:18,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739408811] [2021-03-24 20:08:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:08:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:08:18,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:08:18,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:08:18,736 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 20:08:18,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739408811] [2021-03-24 20:08:18,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:08:18,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 20:08:18,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401705176] [2021-03-24 20:08:18,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-24 20:08:18,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:08:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-24 20:08:18,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-24 20:08:18,762 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 159 [2021-03-24 20:08:18,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 20:08:18,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:08:18,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 159 [2021-03-24 20:08:18,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:08:18,772 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 20:08:18,772 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 20:08:18,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 21 events. 0/21 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 20:08:18,773 INFO L132 encePairwiseOnDemand]: 155/159 looper letters, 0 selfloop transitions, 0 changer transitions 2/21 dead transitions. [2021-03-24 20:08:18,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 48 flow [2021-03-24 20:08:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-24 20:08:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-24 20:08:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions. [2021-03-24 20:08:18,784 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8930817610062893 [2021-03-24 20:08:18,784 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 284 transitions. [2021-03-24 20:08:18,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 284 transitions. [2021-03-24 20:08:18,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:08:18,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 284 transitions. [2021-03-24 20:08:18,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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 20:08:18,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 20:08:18,800 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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 20:08:18,801 INFO L185 Difference]: Start difference. First operand has 29 places, 26 transitions, 58 flow. Second operand 2 states and 284 transitions. [2021-03-24 20:08:18,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 48 flow [2021-03-24 20:08:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 20:08:18,805 INFO L241 Difference]: Finished difference. Result has 24 places, 19 transitions, 40 flow [2021-03-24 20:08:18,806 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2021-03-24 20:08:18,807 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2021-03-24 20:08:18,807 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 40 flow [2021-03-24 20:08:18,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 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 20:08:18,808 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 20:08:18,808 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 20:08:18,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 20:08:18,808 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 20:08:18,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 20:08:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1517552403, now seen corresponding path program 1 times [2021-03-24 20:08:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 20:08:18,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416274567] [2021-03-24 20:08:18,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 20:08:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 20:08:18,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:08:18,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 20:08:18,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 20:08:18,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 20:08:18,911 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 20:08:18,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416274567] [2021-03-24 20:08:18,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 20:08:18,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 20:08:18,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912273367] [2021-03-24 20:08:18,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 20:08:18,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 20:08:18,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 20:08:18,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 20:08:18,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 159 [2021-03-24 20:08:18,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 20:08:18,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 20:08:18,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 159 [2021-03-24 20:08:18,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 20:08:18,924 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-24 20:08:18,924 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 20:08:18,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 18 events. 0/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 20:08:18,924 INFO L132 encePairwiseOnDemand]: 157/159 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-24 20:08:18,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 42 flow [2021-03-24 20:08:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 20:08:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 20:08:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2021-03-24 20:08:18,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.779874213836478 [2021-03-24 20:08:18,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2021-03-24 20:08:18,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2021-03-24 20:08:18,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 20:08:18,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2021-03-24 20:08:18,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 20:08:18,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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 20:08:18,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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 20:08:18,933 INFO L185 Difference]: Start difference. First operand has 24 places, 19 transitions, 40 flow. Second operand 3 states and 372 transitions. [2021-03-24 20:08:18,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 42 flow [2021-03-24 20:08:18,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 42 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 20:08:18,934 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-03-24 20:08:18,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2021-03-24 20:08:18,935 INFO L343 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2021-03-24 20:08:18,935 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2021-03-24 20:08:18,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 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 20:08:18,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 20:08:18,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 08:08:18 BasicIcfg [2021-03-24 20:08:18,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 20:08:18,940 INFO L168 Benchmark]: Toolchain (without parser) took 3720.72 ms. Allocated memory was 255.9 MB in the beginning and 440.4 MB in the end (delta: 184.5 MB). Free memory was 233.1 MB in the beginning and 338.2 MB in the end (delta: -105.1 MB). Peak memory consumption was 78.1 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,940 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 20:08:18,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1031.86 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.1 MB in the beginning and 309.9 MB in the end (delta: -76.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.37 ms. Allocated memory is still 367.0 MB. Free memory was 309.9 MB in the beginning and 306.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,942 INFO L168 Benchmark]: Boogie Preprocessor took 49.45 ms. Allocated memory is still 367.0 MB. Free memory was 306.7 MB in the beginning and 304.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,942 INFO L168 Benchmark]: RCFGBuilder took 513.39 ms. Allocated memory is still 367.0 MB. Free memory was 304.6 MB in the beginning and 329.7 MB in the end (delta: -25.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,943 INFO L168 Benchmark]: TraceAbstraction took 2030.17 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 328.7 MB in the beginning and 338.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.0 GB. [2021-03-24 20:08:18,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1031.86 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 233.1 MB in the beginning and 309.9 MB in the end (delta: -76.8 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 89.37 ms. Allocated memory is still 367.0 MB. Free memory was 309.9 MB in the beginning and 306.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 49.45 ms. Allocated memory is still 367.0 MB. Free memory was 306.7 MB in the beginning and 304.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 513.39 ms. Allocated memory is still 367.0 MB. Free memory was 304.6 MB in the beginning and 329.7 MB in the end (delta: -25.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2030.17 ms. Allocated memory was 367.0 MB in the beginning and 440.4 MB in the end (delta: 73.4 MB). Free memory was 328.7 MB in the beginning and 338.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 62.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1407.5ms, 84 PlacesBefore, 29 PlacesAfterwards, 82 TransitionsBefore, 26 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 4 FixpointIterations, 38 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 67 TotalNumberOfCompositions, 292 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 292, positive: 292, positive conditional: 0, positive unconditional: 292, 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: 250, positive: 250, positive conditional: 0, positive unconditional: 250, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 250, positive: 250, positive conditional: 0, positive unconditional: 250, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 250, positive: 250, positive conditional: 0, positive unconditional: 250, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 292, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 250, unknown conditional: 0, unknown unconditional: 250] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 87 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1952.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 72.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1474.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 5, 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: 6.8ms SsaConstructionTime, 52.4ms SatisfiabilityAnalysisTime, 162.9ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...