/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/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 19:22:29,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 19:22:29,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 19:22:29,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 19:22:29,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 19:22:29,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 19:22:29,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 19:22:29,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 19:22:29,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 19:22:29,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 19:22:29,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 19:22:29,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 19:22:29,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 19:22:29,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 19:22:29,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 19:22:29,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 19:22:29,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 19:22:29,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 19:22:29,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 19:22:29,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 19:22:29,404 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 [2021-03-11 19:22:29,438 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 19:22:29,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 19:22:29,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 19:22:29,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 19:22:29,442 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 19:22:29,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 19:22:29,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 19:22:29,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 19:22:29,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 19:22:29,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 19:22:29,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 19:22:29,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 19:22:29,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 19:22:29,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:22:29,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 19:22:29,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 19:22:29,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 19:22:29,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 19:22:29,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 19:22:29,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 19:22:29,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 19:22:29,786 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 19:22:29,787 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 19:22:29,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-11 19:22:29,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d39b2647/04a6099f079444c4ab7c9f84831fbd59/FLAG1632574b8 [2021-03-11 19:22:30,407 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 19:22:30,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-11 19:22:30,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d39b2647/04a6099f079444c4ab7c9f84831fbd59/FLAG1632574b8 [2021-03-11 19:22:30,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d39b2647/04a6099f079444c4ab7c9f84831fbd59 [2021-03-11 19:22:30,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 19:22:30,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 19:22:30,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 19:22:30,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 19:22:30,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 19:22:30,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:22:30" (1/1) ... [2021-03-11 19:22:30,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2584c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:30, skipping insertion in model container [2021-03-11 19:22:30,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 07:22:30" (1/1) ... [2021-03-11 19:22:30,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 19:22:30,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 19:22:31,208 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-11 19:22:31,215 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-11 19:22:31,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:22:31,232 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 19:22:31,266 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-11 19:22:31,271 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-11 19:22:31,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 19:22:31,335 INFO L208 MainTranslator]: Completed translation [2021-03-11 19:22:31,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31 WrapperNode [2021-03-11 19:22:31,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 19:22:31,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 19:22:31,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 19:22:31,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 19:22:31,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 19:22:31,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 19:22:31,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 19:22:31,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 19:22:31,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... [2021-03-11 19:22:31,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 19:22:31,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 19:22:31,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 19:22:31,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 19:22:31,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 19:22:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-11 19:22:31,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-11 19:22:31,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 19:22:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 19:22:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 19:22:31,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 19:22:31,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 19:22:31,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 19:22:31,508 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 19:22:32,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 19:22:32,135 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-03-11 19:22:32,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:22:32 BoogieIcfgContainer [2021-03-11 19:22:32,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 19:22:32,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 19:22:32,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 19:22:32,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 19:22:32,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 07:22:30" (1/3) ... [2021-03-11 19:22:32,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ad362b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:22:32, skipping insertion in model container [2021-03-11 19:22:32,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 07:22:31" (2/3) ... [2021-03-11 19:22:32,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ad362b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 07:22:32, skipping insertion in model container [2021-03-11 19:22:32,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 07:22:32" (3/3) ... [2021-03-11 19:22:32,144 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-03-11 19:22:32,149 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 19:22:32,153 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 19:22:32,154 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 19:22:32,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,188 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,190 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 19:22:32,194 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 19:22:32,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 19:22:32,224 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 19:22:32,225 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 19:22:32,225 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 19:22:32,225 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 19:22:32,225 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 19:22:32,225 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 19:22:32,225 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 19:22:32,225 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 19:22:32,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-03-11 19:22:32,257 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-11 19:22:32,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:22:32,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-11 19:22:32,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2021-03-11 19:22:32,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 95 flow [2021-03-11 19:22:32,267 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 19:22:32,276 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-11 19:22:32,278 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-11 19:22:32,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 95 flow [2021-03-11 19:22:32,288 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-11 19:22:32,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:22:32,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-11 19:22:32,289 INFO L116 LiptonReduction]: Number of co-enabled transitions 378 [2021-03-11 19:22:34,267 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-03-11 19:22:34,457 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-03-11 19:22:34,506 INFO L131 LiptonReduction]: Checked pairs total: 839 [2021-03-11 19:22:34,507 INFO L133 LiptonReduction]: Total number of compositions: 36 [2021-03-11 19:22:34,508 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2244 [2021-03-11 19:22:34,516 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2021-03-11 19:22:34,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:22:34,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:22:34,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-03-11 19:22:34,517 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:22:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:22:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash 10739564, now seen corresponding path program 1 times [2021-03-11 19:22:34,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:22:34,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249258847] [2021-03-11 19:22:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:22:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:22:34,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:22:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:22:34,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249258847] [2021-03-11 19:22:34,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:22:34,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 19:22:34,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588971363] [2021-03-11 19:22:34,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:22:34,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:22:34,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:22:34,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:22:34,672 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-03-11 19:22:34,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 13 transitions, 29 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-03-11 19:22:34,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:22:34,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-03-11 19:22:34,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:22:34,699 INFO L129 PetriNetUnfolder]: 2/15 cut-off events. [2021-03-11 19:22:34,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:22:34,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 15 events. 2/15 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 3/17 useless extension candidates. Maximal degree in co-relation 18. Up to 5 conditions per place. [2021-03-11 19:22:34,701 INFO L132 encePairwiseOnDemand]: 79/83 looper letters, 2 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2021-03-11 19:22:34,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 13 transitions, 39 flow [2021-03-11 19:22:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:22:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:22:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2021-03-11 19:22:34,716 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8353413654618473 [2021-03-11 19:22:34,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2021-03-11 19:22:34,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2021-03-11 19:22:34,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:22:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2021-03-11 19:22:34,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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) [2021-03-11 19:22:34,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 19:22:34,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 19:22:34,740 INFO L185 Difference]: Start difference. First operand has 16 places, 13 transitions, 29 flow. Second operand 3 states and 208 transitions. [2021-03-11 19:22:34,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 13 transitions, 39 flow [2021-03-11 19:22:34,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 38 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 19:22:34,745 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 26 flow [2021-03-11 19:22:34,746 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2021-03-11 19:22:34,747 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2021-03-11 19:22:34,747 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 26 flow [2021-03-11 19:22:34,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2021-03-11 19:22:34,747 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:22:34,748 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 19:22:34,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 19:22:34,748 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:22:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:22:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash 332927994, now seen corresponding path program 1 times [2021-03-11 19:22:34,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:22:34,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728705787] [2021-03-11 19:22:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:22:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:22:34,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:22:34,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:22:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:22:34,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728705787] [2021-03-11 19:22:34,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:22:34,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:22:34,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395312253] [2021-03-11 19:22:34,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 19:22:34,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:22:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 19:22:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 19:22:34,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-03-11 19:22:34,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2021-03-11 19:22:34,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:22:34,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-03-11 19:22:34,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:22:34,854 INFO L129 PetriNetUnfolder]: 2/12 cut-off events. [2021-03-11 19:22:34,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 19:22:34,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 16. Up to 4 conditions per place. [2021-03-11 19:22:34,854 INFO L132 encePairwiseOnDemand]: 79/83 looper letters, 2 selfloop transitions, 2 changer transitions 1/11 dead transitions. [2021-03-11 19:22:34,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 11 transitions, 38 flow [2021-03-11 19:22:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 19:22:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 19:22:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2021-03-11 19:22:34,857 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2021-03-11 19:22:34,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2021-03-11 19:22:34,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2021-03-11 19:22:34,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:22:34,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2021-03-11 19:22:34,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 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) [2021-03-11 19:22:34,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 19:22:34,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 19:22:34,860 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 26 flow. Second operand 3 states and 213 transitions. [2021-03-11 19:22:34,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 11 transitions, 38 flow [2021-03-11 19:22:34,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:22:34,861 INFO L241 Difference]: Finished difference. Result has 16 places, 10 transitions, 34 flow [2021-03-11 19:22:34,861 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2021-03-11 19:22:34,861 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2021-03-11 19:22:34,862 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 34 flow [2021-03-11 19:22:34,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2021-03-11 19:22:34,862 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:22:34,862 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:22:34,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 19:22:34,862 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:22:34,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:22:34,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2116477110, now seen corresponding path program 1 times [2021-03-11 19:22:34,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:22:34,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176518208] [2021-03-11 19:22:34,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:22:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:22:34,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:22:34,917 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 19:22:34,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 19:22:34,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 19:22:34,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 19:22:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:22:34,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176518208] [2021-03-11 19:22:34,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:22:34,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 19:22:34,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040357281] [2021-03-11 19:22:34,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:22:34,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:22:34,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:22:34,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:22:34,930 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 83 [2021-03-11 19:22:34,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2021-03-11 19:22:34,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:22:34,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 83 [2021-03-11 19:22:34,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:22:34,946 INFO L129 PetriNetUnfolder]: 3/16 cut-off events. [2021-03-11 19:22:34,946 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-11 19:22:34,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 3/16 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 34. Up to 7 conditions per place. [2021-03-11 19:22:34,947 INFO L132 encePairwiseOnDemand]: 78/83 looper letters, 3 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2021-03-11 19:22:34,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 54 flow [2021-03-11 19:22:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 19:22:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 19:22:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2021-03-11 19:22:34,949 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 19:22:34,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2021-03-11 19:22:34,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2021-03-11 19:22:34,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:22:34,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2021-03-11 19:22:34,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2021-03-11 19:22:34,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-11 19:22:34,951 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-11 19:22:34,952 INFO L185 Difference]: Start difference. First operand has 16 places, 10 transitions, 34 flow. Second operand 4 states and 249 transitions. [2021-03-11 19:22:34,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 54 flow [2021-03-11 19:22:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 19:22:34,953 INFO L241 Difference]: Finished difference. Result has 17 places, 10 transitions, 40 flow [2021-03-11 19:22:34,953 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=40, PETRI_PLACES=17, PETRI_TRANSITIONS=10} [2021-03-11 19:22:34,953 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2021-03-11 19:22:34,953 INFO L480 AbstractCegarLoop]: Abstraction has has 17 places, 10 transitions, 40 flow [2021-03-11 19:22:34,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2021-03-11 19:22:34,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 19:22:34,953 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 19:22:34,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 19:22:34,954 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 19:22:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 19:22:34,954 INFO L82 PathProgramCache]: Analyzing trace with hash 498866591, now seen corresponding path program 1 times [2021-03-11 19:22:34,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 19:22:34,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926458160] [2021-03-11 19:22:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 19:22:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 19:22:34,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 19:22:34,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 19:22:35,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 19:22:35,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 19:22:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 19:22:35,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926458160] [2021-03-11 19:22:35,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 19:22:35,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 19:22:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098125627] [2021-03-11 19:22:35,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 19:22:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 19:22:35,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 19:22:35,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 19:22:35,009 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-03-11 19:22:35,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 10 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2021-03-11 19:22:35,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 19:22:35,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-03-11 19:22:35,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 19:22:35,015 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-03-11 19:22:35,015 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 19:22:35,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 9 events. 1/9 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 14. Up to 3 conditions per place. [2021-03-11 19:22:35,016 INFO L132 encePairwiseOnDemand]: 80/83 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-11 19:22:35,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 9 transitions, 40 flow [2021-03-11 19:22:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 19:22:35,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 19:22:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 271 transitions. [2021-03-11 19:22:35,018 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8162650602409639 [2021-03-11 19:22:35,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 271 transitions. [2021-03-11 19:22:35,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 271 transitions. [2021-03-11 19:22:35,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 19:22:35,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 271 transitions. [2021-03-11 19:22:35,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2021-03-11 19:22:35,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-11 19:22:35,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 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) [2021-03-11 19:22:35,021 INFO L185 Difference]: Start difference. First operand has 17 places, 10 transitions, 40 flow. Second operand 4 states and 271 transitions. [2021-03-11 19:22:35,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 9 transitions, 40 flow [2021-03-11 19:22:35,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 31 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 19:22:35,021 INFO L241 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2021-03-11 19:22:35,021 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2021-03-11 19:22:35,022 INFO L335 CegarLoopForPetriNet]: 16 programPoint places, 0 predicate places. [2021-03-11 19:22:35,022 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2021-03-11 19:22:35,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 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) [2021-03-11 19:22:35,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 19:22:35,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 07:22:35 BasicIcfg [2021-03-11 19:22:35,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 19:22:35,026 INFO L168 Benchmark]: Toolchain (without parser) took 4180.71 ms. Allocated memory is still 358.6 MB. Free memory was 321.4 MB in the beginning and 273.8 MB in the end (delta: 47.6 MB). Peak memory consumption was 50.7 MB. Max. memory is 16.0 GB. [2021-03-11 19:22:35,027 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory was 339.5 MB in the beginning and 339.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:22:35,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.14 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 321.5 MB in the end (delta: -687.9 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 19:22:35,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 358.6 MB. Free memory was 321.5 MB in the beginning and 319.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:22:35,028 INFO L168 Benchmark]: Boogie Preprocessor took 33.21 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 318.4 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:22:35,028 INFO L168 Benchmark]: RCFGBuilder took 706.89 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 272.2 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. [2021-03-11 19:22:35,029 INFO L168 Benchmark]: TraceAbstraction took 2887.51 ms. Allocated memory is still 358.6 MB. Free memory was 272.2 MB in the beginning and 273.8 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 19:22:35,031 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 358.6 MB. Free memory was 339.5 MB in the beginning and 339.4 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 485.14 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 321.5 MB in the end (delta: -687.9 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 358.6 MB. Free memory was 321.5 MB in the beginning and 319.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.21 ms. Allocated memory is still 358.6 MB. Free memory was 319.4 MB in the beginning and 318.4 MB in the end (delta: 995.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 706.89 ms. Allocated memory is still 358.6 MB. Free memory was 318.4 MB in the beginning and 272.2 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2887.51 ms. Allocated memory is still 358.6 MB. Free memory was 272.2 MB in the beginning and 273.8 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2228.5ms, 48 PlacesBefore, 16 PlacesAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 839 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 527, positive: 452, positive conditional: 0, positive unconditional: 452, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 277, positive: 254, positive conditional: 0, positive unconditional: 254, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 277, positive: 244, positive conditional: 0, positive unconditional: 244, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 33, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 175, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 128, negative conditional: 0, negative unconditional: 128, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 527, positive: 198, positive conditional: 0, positive unconditional: 198, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 277, unknown conditional: 0, unknown unconditional: 277] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2802.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 144.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2287.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.5ms SsaConstructionTime, 63.7ms SatisfiabilityAnalysisTime, 166.0ms InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...