/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-atomic/szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:28:56,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:28:56,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:28:56,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:28:56,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:28:56,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:28:56,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:28:56,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:28:56,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:28:56,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:28:56,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:28:56,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:28:56,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:28:56,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:28:56,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:28:56,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:28:56,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:28:56,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:28:56,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:28:56,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:28:56,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:28:56,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:28:56,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:28:56,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:28:56,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:28:56,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:28:56,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:28:56,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:28:56,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:28:56,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:28:56,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:28:56,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:28:56,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:28:56,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:28:56,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:28:56,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:28:56,356 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-SemanticLooper.epf [2020-10-16 03:28:56,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:28:56,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:28:56,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:28:56,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:28:56,380 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:28:56,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:28:56,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:28:56,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:28:56,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:28:56,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:28:56,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:28:56,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:28:56,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:28:56,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:28:56,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:28:56,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:28:56,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:28:56,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:28:56,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:28:56,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:28:56,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:28:56,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:28:56,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:28:56,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:28:56,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:28:56,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:28:56,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:28:56,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:28:56,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:28:56,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:28:56,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:28:56,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:28:56,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:28:56,734 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:28:56,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-16 03:28:56,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf270f6cc/da1034260774432fab56fd11001eaa8b/FLAG0dd65a977 [2020-10-16 03:28:57,334 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:28:57,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/szymanski.i [2020-10-16 03:28:57,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf270f6cc/da1034260774432fab56fd11001eaa8b/FLAG0dd65a977 [2020-10-16 03:28:57,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf270f6cc/da1034260774432fab56fd11001eaa8b [2020-10-16 03:28:57,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:28:57,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:28:57,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:28:57,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:28:57,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:28:57,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:57" (1/1) ... [2020-10-16 03:28:57,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c054535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:57, skipping insertion in model container [2020-10-16 03:28:57,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:28:57" (1/1) ... [2020-10-16 03:28:57,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:28:57,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:28:58,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:28:58,264 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:28:58,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:28:58,373 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:28:58,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58 WrapperNode [2020-10-16 03:28:58,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:28:58,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:28:58,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:28:58,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:28:58,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:28:58,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:28:58,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:28:58,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:28:58,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (1/1) ... [2020-10-16 03:28:58,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:28:58,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:28:58,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:28:58,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:28:58,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (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 [2020-10-16 03:28:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:28:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 03:28:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 03:28:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 03:28:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 03:28:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:28:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:28:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:28:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:28:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:28:58,522 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:28:58,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:28:58,890 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 03:28:58,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:28:58 BoogieIcfgContainer [2020-10-16 03:28:58,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:28:58,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:28:58,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:28:58,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:28:58,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:28:57" (1/3) ... [2020-10-16 03:28:58,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7294f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:28:58, skipping insertion in model container [2020-10-16 03:28:58,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:28:58" (2/3) ... [2020-10-16 03:28:58,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7294f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:28:58, skipping insertion in model container [2020-10-16 03:28:58,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:28:58" (3/3) ... [2020-10-16 03:28:58,901 INFO L111 eAbstractionObserver]: Analyzing ICFG szymanski.i [2020-10-16 03:28:58,910 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:28:58,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:28:58,918 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:28:58,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,946 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,946 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,947 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,948 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,949 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,950 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,950 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,951 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,952 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,955 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,956 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,956 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,962 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,962 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,963 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,963 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:28:58,993 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 03:28:59,012 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:28:59,012 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:28:59,012 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:28:59,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:28:59,013 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:28:59,013 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:28:59,013 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:28:59,013 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:28:59,026 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 196 flow [2020-10-16 03:28:59,068 INFO L129 PetriNetUnfolder]: 21/87 cut-off events. [2020-10-16 03:28:59,068 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:28:59,075 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 87 events. 21/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-10-16 03:28:59,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 87 transitions, 196 flow [2020-10-16 03:28:59,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 75 transitions, 162 flow [2020-10-16 03:28:59,085 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:28:59,088 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 75 transitions, 162 flow [2020-10-16 03:28:59,090 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 75 transitions, 162 flow [2020-10-16 03:28:59,090 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 75 transitions, 162 flow [2020-10-16 03:28:59,112 INFO L129 PetriNetUnfolder]: 20/77 cut-off events. [2020-10-16 03:28:59,112 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:28:59,114 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 20/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2020-10-16 03:28:59,117 INFO L117 LiptonReduction]: Number of co-enabled transitions 2160 [2020-10-16 03:28:59,988 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-16 03:29:00,062 INFO L132 LiptonReduction]: Checked pairs total: 4851 [2020-10-16 03:29:00,062 INFO L134 LiptonReduction]: Total number of compositions: 34 [2020-10-16 03:29:00,065 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 982 [2020-10-16 03:29:00,075 INFO L129 PetriNetUnfolder]: 13/34 cut-off events. [2020-10-16 03:29:00,076 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:29:00,076 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:29:00,077 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:29:00,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:29:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:29:00,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2121391829, now seen corresponding path program 1 times [2020-10-16 03:29:00,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:29:00,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167351046] [2020-10-16 03:29:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:29:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:29:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:29:00,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167351046] [2020-10-16 03:29:00,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:29:00,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:29:00,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125221997] [2020-10-16 03:29:00,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 03:29:00,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:29:00,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 03:29:00,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 03:29:00,301 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 121 [2020-10-16 03:29:00,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 53 transitions, 118 flow. Second operand 2 states. [2020-10-16 03:29:00,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:29:00,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 121 [2020-10-16 03:29:00,305 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:29:00,337 INFO L129 PetriNetUnfolder]: 10/47 cut-off events. [2020-10-16 03:29:00,338 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:29:00,339 INFO L80 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 10/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 8/43 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2020-10-16 03:29:00,341 INFO L132 encePairwiseOnDemand]: 113/121 looper letters, 0 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2020-10-16 03:29:00,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 102 flow [2020-10-16 03:29:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 03:29:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 03:29:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2020-10-16 03:29:00,357 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8512396694214877 [2020-10-16 03:29:00,358 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2020-10-16 03:29:00,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2020-10-16 03:29:00,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:29:00,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2020-10-16 03:29:00,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 03:29:00,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 03:29:00,379 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 03:29:00,382 INFO L185 Difference]: Start difference. First operand has 41 places, 53 transitions, 118 flow. Second operand 2 states and 206 transitions. [2020-10-16 03:29:00,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 102 flow [2020-10-16 03:29:00,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 03:29:00,388 INFO L241 Difference]: Finished difference. Result has 38 places, 45 transitions, 94 flow [2020-10-16 03:29:00,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=38, PETRI_TRANSITIONS=45} [2020-10-16 03:29:00,392 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2020-10-16 03:29:00,392 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 45 transitions, 94 flow [2020-10-16 03:29:00,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 03:29:00,393 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:29:00,393 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:29:00,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:29:00,393 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:29:00,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:29:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash 853553953, now seen corresponding path program 1 times [2020-10-16 03:29:00,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:29:00,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491800398] [2020-10-16 03:29:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:29:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:29:00,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:29:00,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491800398] [2020-10-16 03:29:00,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:29:00,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:29:00,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025180581] [2020-10-16 03:29:00,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:29:00,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:29:00,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:29:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:29:00,470 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2020-10-16 03:29:00,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 94 flow. Second operand 3 states. [2020-10-16 03:29:00,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:29:00,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2020-10-16 03:29:00,473 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:29:00,516 INFO L129 PetriNetUnfolder]: 22/98 cut-off events. [2020-10-16 03:29:00,517 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:29:00,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 98 events. 22/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 281 event pairs, 2 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 128. Up to 18 conditions per place. [2020-10-16 03:29:00,519 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 7 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2020-10-16 03:29:00,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 120 flow [2020-10-16 03:29:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:29:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:29:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2020-10-16 03:29:00,522 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2020-10-16 03:29:00,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2020-10-16 03:29:00,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2020-10-16 03:29:00,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:29:00,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2020-10-16 03:29:00,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:29:00,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:29:00,526 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:29:00,527 INFO L185 Difference]: Start difference. First operand has 38 places, 45 transitions, 94 flow. Second operand 3 states and 264 transitions. [2020-10-16 03:29:00,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 120 flow [2020-10-16 03:29:00,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:29:00,529 INFO L241 Difference]: Finished difference. Result has 42 places, 46 transitions, 114 flow [2020-10-16 03:29:00,530 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2020-10-16 03:29:00,530 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2020-10-16 03:29:00,531 INFO L481 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 114 flow [2020-10-16 03:29:00,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:29:00,531 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:29:00,531 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:29:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:29:00,532 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:29:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:29:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2094116349, now seen corresponding path program 1 times [2020-10-16 03:29:00,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:29:00,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891385596] [2020-10-16 03:29:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:29:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:29:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:29:00,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891385596] [2020-10-16 03:29:00,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:29:00,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:29:00,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615573194] [2020-10-16 03:29:00,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:29:00,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:29:00,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:29:00,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:29:00,578 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2020-10-16 03:29:00,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 114 flow. Second operand 3 states. [2020-10-16 03:29:00,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:29:00,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2020-10-16 03:29:00,579 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:29:00,608 INFO L129 PetriNetUnfolder]: 16/83 cut-off events. [2020-10-16 03:29:00,608 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 03:29:00,609 INFO L80 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 83 events. 16/83 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 217 event pairs, 2 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 123. Up to 11 conditions per place. [2020-10-16 03:29:00,610 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 6 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2020-10-16 03:29:00,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 130 flow [2020-10-16 03:29:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:29:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:29:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2020-10-16 03:29:00,612 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.721763085399449 [2020-10-16 03:29:00,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2020-10-16 03:29:00,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2020-10-16 03:29:00,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:29:00,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2020-10-16 03:29:00,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:29:00,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:29:00,616 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:29:00,616 INFO L185 Difference]: Start difference. First operand has 42 places, 46 transitions, 114 flow. Second operand 3 states and 262 transitions. [2020-10-16 03:29:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 130 flow [2020-10-16 03:29:00,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:29:00,619 INFO L241 Difference]: Finished difference. Result has 43 places, 46 transitions, 118 flow [2020-10-16 03:29:00,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2020-10-16 03:29:00,619 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 03:29:00,620 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 118 flow [2020-10-16 03:29:00,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:29:00,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:29:00,620 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:29:00,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:29:00,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:29:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:29:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1089394459, now seen corresponding path program 1 times [2020-10-16 03:29:00,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:29:00,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082929997] [2020-10-16 03:29:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:29:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:29:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:29:00,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082929997] [2020-10-16 03:29:00,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:29:00,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:29:00,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294342562] [2020-10-16 03:29:00,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:29:00,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:29:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:29:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:29:00,663 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2020-10-16 03:29:00,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 118 flow. Second operand 3 states. [2020-10-16 03:29:00,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:29:00,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2020-10-16 03:29:00,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:29:00,745 INFO L129 PetriNetUnfolder]: 131/326 cut-off events. [2020-10-16 03:29:00,745 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2020-10-16 03:29:00,747 INFO L80 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 326 events. 131/326 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1422 event pairs, 33 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 528. Up to 118 conditions per place. [2020-10-16 03:29:00,749 INFO L132 encePairwiseOnDemand]: 110/121 looper letters, 15 selfloop transitions, 6 changer transitions 4/55 dead transitions. [2020-10-16 03:29:00,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 186 flow [2020-10-16 03:29:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:29:00,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:29:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2020-10-16 03:29:00,751 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2020-10-16 03:29:00,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:29:00,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:29:00,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:29:00,754 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:29:00,754 INFO L185 Difference]: Start difference. First operand has 43 places, 46 transitions, 118 flow. Second operand 3 states and 261 transitions. [2020-10-16 03:29:00,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 186 flow [2020-10-16 03:29:00,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:29:00,758 INFO L241 Difference]: Finished difference. Result has 45 places, 49 transitions, 156 flow [2020-10-16 03:29:00,759 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2020-10-16 03:29:00,759 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2020-10-16 03:29:00,759 INFO L481 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 156 flow [2020-10-16 03:29:00,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:29:00,759 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:29:00,760 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:29:00,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:29:00,760 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:29:00,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:29:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2141563777, now seen corresponding path program 2 times [2020-10-16 03:29:00,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:29:00,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69679772] [2020-10-16 03:29:00,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:29:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:29:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:29:00,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69679772] [2020-10-16 03:29:00,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:29:00,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:29:00,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413361864] [2020-10-16 03:29:00,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:29:00,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:29:00,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:29:00,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:29:00,804 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 121 [2020-10-16 03:29:00,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 156 flow. Second operand 3 states. [2020-10-16 03:29:00,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:29:00,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 121 [2020-10-16 03:29:00,804 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:29:00,880 INFO L129 PetriNetUnfolder]: 158/364 cut-off events. [2020-10-16 03:29:00,880 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-10-16 03:29:00,882 INFO L80 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 364 events. 158/364 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1582 event pairs, 32 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 675. Up to 122 conditions per place. [2020-10-16 03:29:00,882 INFO L132 encePairwiseOnDemand]: 110/121 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2020-10-16 03:29:00,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 216 flow [2020-10-16 03:29:00,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:29:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:29:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2020-10-16 03:29:00,884 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.71900826446281 [2020-10-16 03:29:00,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:29:00,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2020-10-16 03:29:00,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:29:00,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:29:00,887 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:29:00,887 INFO L185 Difference]: Start difference. First operand has 45 places, 49 transitions, 156 flow. Second operand 3 states and 261 transitions. [2020-10-16 03:29:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 216 flow [2020-10-16 03:29:00,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 204 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 03:29:00,891 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2020-10-16 03:29:00,891 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2020-10-16 03:29:00,892 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 03:29:00,892 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2020-10-16 03:29:00,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:29:00,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:29:00,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:29:00 BasicIcfg [2020-10-16 03:29:00,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:29:00,899 INFO L168 Benchmark]: Toolchain (without parser) took 3192.04 ms. Allocated memory was 245.9 MB in the beginning and 350.7 MB in the end (delta: 104.9 MB). Free memory was 201.1 MB in the beginning and 182.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 123.8 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,900 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 245.9 MB. Free memory was 223.9 MB in the beginning and 223.1 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.03 ms. Allocated memory was 245.9 MB in the beginning and 298.8 MB in the end (delta: 53.0 MB). Free memory was 201.1 MB in the beginning and 254.4 MB in the end (delta: -53.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 298.8 MB. Free memory was 253.5 MB in the beginning and 251.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,902 INFO L168 Benchmark]: Boogie Preprocessor took 28.87 ms. Allocated memory is still 298.8 MB. Free memory was 251.8 MB in the beginning and 250.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,903 INFO L168 Benchmark]: RCFGBuilder took 443.33 ms. Allocated memory is still 298.8 MB. Free memory was 250.2 MB in the beginning and 227.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,904 INFO L168 Benchmark]: TraceAbstraction took 2002.34 ms. Allocated memory was 298.8 MB in the beginning and 350.7 MB in the end (delta: 51.9 MB). Free memory was 226.5 MB in the beginning and 182.2 MB in the end (delta: 44.3 MB). Peak memory consumption was 96.2 MB. Max. memory is 14.2 GB. [2020-10-16 03:29:00,908 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 245.9 MB. Free memory was 223.9 MB in the beginning and 223.1 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 663.03 ms. Allocated memory was 245.9 MB in the beginning and 298.8 MB in the end (delta: 53.0 MB). Free memory was 201.1 MB in the beginning and 254.4 MB in the end (delta: -53.2 MB). Peak memory consumption was 30.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.96 ms. Allocated memory is still 298.8 MB. Free memory was 253.5 MB in the beginning and 251.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.87 ms. Allocated memory is still 298.8 MB. Free memory was 251.8 MB in the beginning and 250.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 443.33 ms. Allocated memory is still 298.8 MB. Free memory was 250.2 MB in the beginning and 227.3 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2002.34 ms. Allocated memory was 298.8 MB in the beginning and 350.7 MB in the end (delta: 51.9 MB). Free memory was 226.5 MB in the beginning and 182.2 MB in the end (delta: 44.3 MB). Peak memory consumption was 96.2 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 919 VarBasedMoverChecksPositive, 93 VarBasedMoverChecksNegative, 63 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 301 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 0.9s, 61 PlacesBefore, 41 PlacesAfterwards, 75 TransitionsBefore, 53 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 34 TotalNumberOfCompositions, 4851 MoverChecksTotal - PositiveResult [Line: 702]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 66 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 52 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...