/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 08:38:10,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 08:38:10,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 08:38:10,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 08:38:10,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 08:38:10,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 08:38:10,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 08:38:10,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 08:38:10,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 08:38:10,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 08:38:10,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 08:38:10,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 08:38:10,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 08:38:10,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 08:38:10,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 08:38:10,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 08:38:10,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 08:38:10,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 08:38:10,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 08:38:10,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 08:38:10,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 08:38:10,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 08:38:10,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 08:38:10,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 08:38:10,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 08:38:10,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 08:38:10,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 08:38:10,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 08:38:10,249 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 08:38:10,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 08:38:10,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 08:38:10,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 08:38:10,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 08:38:10,287 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 08:38:10,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 08:38:10,288 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 08:38:10,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 08:38:10,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 08:38:10,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 08:38:10,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 08:38:10,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 08:38:10,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 08:38:10,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 08:38:10,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 08:38:10,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 08:38:10,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 08:38:10,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 08:38:10,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 08:38:10,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 08:38:10,292 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 08:38:10,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 08:38:10,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 08:38:10,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 08:38:10,609 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 08:38:10,610 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 08:38:10,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-26 08:38:10,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af79fdf50/9678f8c854e64f00acfbccf6d8214d35/FLAGecb9f420f [2021-03-26 08:38:11,120 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 08:38:11,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2021-03-26 08:38:11,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af79fdf50/9678f8c854e64f00acfbccf6d8214d35/FLAGecb9f420f [2021-03-26 08:38:11,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af79fdf50/9678f8c854e64f00acfbccf6d8214d35 [2021-03-26 08:38:11,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 08:38:11,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 08:38:11,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 08:38:11,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 08:38:11,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 08:38:11,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af36950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11, skipping insertion in model container [2021-03-26 08:38:11,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 08:38:11,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 08:38:11,380 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:38:11,480 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-atomic/peterson.i[30997,31010] [2021-03-26 08:38:11,485 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-atomic/peterson.i[31682,31695] [2021-03-26 08:38:11,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:38:11,493 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 08:38:11,504 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-26 08:38:11,520 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-atomic/peterson.i[30997,31010] [2021-03-26 08:38:11,522 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-atomic/peterson.i[31682,31695] [2021-03-26 08:38:11,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 08:38:11,577 INFO L208 MainTranslator]: Completed translation [2021-03-26 08:38:11,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11 WrapperNode [2021-03-26 08:38:11,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 08:38:11,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 08:38:11,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 08:38:11,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 08:38:11,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 08:38:11,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 08:38:11,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 08:38:11,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 08:38:11,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (1/1) ... [2021-03-26 08:38:11,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 08:38:11,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 08:38:11,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 08:38:11,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 08:38:11,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (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 [2021-03-26 08:38:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 08:38:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-26 08:38:11,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-26 08:38:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-26 08:38:11,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-26 08:38:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 08:38:11,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 08:38:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 08:38:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 08:38:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 08:38:11,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 08:38:11,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 08:38:11,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 08:38:11,737 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 08:38:12,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 08:38:12,045 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-26 08:38:12,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:38:12 BoogieIcfgContainer [2021-03-26 08:38:12,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 08:38:12,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 08:38:12,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 08:38:12,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 08:38:12,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 08:38:11" (1/3) ... [2021-03-26 08:38:12,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acdc4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:38:12, skipping insertion in model container [2021-03-26 08:38:12,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 08:38:11" (2/3) ... [2021-03-26 08:38:12,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6acdc4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 08:38:12, skipping insertion in model container [2021-03-26 08:38:12,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 08:38:12" (3/3) ... [2021-03-26 08:38:12,052 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2021-03-26 08:38:12,057 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 08:38:12,060 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-26 08:38:12,061 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 08:38:12,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,080 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,080 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,081 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,082 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,083 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,084 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,089 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,091 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,095 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 08:38:12,100 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-26 08:38:12,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-26 08:38:12,132 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 08:38:12,132 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 08:38:12,133 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 08:38:12,133 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 08:38:12,133 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 08:38:12,133 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 08:38:12,133 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 08:38:12,133 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 08:38:12,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2021-03-26 08:38:12,166 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2021-03-26 08:38:12,166 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 08:38:12,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2021-03-26 08:38:12,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 74 transitions, 170 flow [2021-03-26 08:38:12,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 62 transitions, 136 flow [2021-03-26 08:38:12,174 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:38:12,184 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-26 08:38:12,187 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 62 transitions, 136 flow [2021-03-26 08:38:12,188 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 62 transitions, 136 flow [2021-03-26 08:38:12,200 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2021-03-26 08:38:12,200 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 08:38:12,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 6/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2021-03-26 08:38:12,203 INFO L142 LiptonReduction]: Number of co-enabled transitions 1116 [2021-03-26 08:38:13,455 INFO L154 LiptonReduction]: Checked pairs total: 1435 [2021-03-26 08:38:13,456 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-26 08:38:13,458 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1284 [2021-03-26 08:38:13,466 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-26 08:38:13,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:38:13,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:38:13,467 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:38:13,467 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:38:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:38:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash -528344222, now seen corresponding path program 1 times [2021-03-26 08:38:13,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:38:13,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378338496] [2021-03-26 08:38:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:38:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:38:13,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:13,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:13,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:13,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:38:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:38:13,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378338496] [2021-03-26 08:38:13,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:38:13,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:38:13,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203020846] [2021-03-26 08:38:13,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 08:38:13,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:38:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 08:38:13,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 08:38:13,633 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 108 [2021-03-26 08:38:13,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-26 08:38:13,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:38:13,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 108 [2021-03-26 08:38:13,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:38:13,681 INFO L129 PetriNetUnfolder]: 9/69 cut-off events. [2021-03-26 08:38:13,682 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-26 08:38:13,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 69 events. 9/69 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 2 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 89. Up to 18 conditions per place. [2021-03-26 08:38:13,685 INFO L132 encePairwiseOnDemand]: 103/108 looper letters, 7 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2021-03-26 08:38:13,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 102 flow [2021-03-26 08:38:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 08:38:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 08:38:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2021-03-26 08:38:13,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2021-03-26 08:38:13,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2021-03-26 08:38:13,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2021-03-26 08:38:13,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:38:13,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2021-03-26 08:38:13,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2021-03-26 08:38:13,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-26 08:38:13,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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) [2021-03-26 08:38:13,725 INFO L185 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 3 states and 261 transitions. [2021-03-26 08:38:13,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 102 flow [2021-03-26 08:38:13,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 08:38:13,729 INFO L241 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow [2021-03-26 08:38:13,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2021-03-26 08:38:13,731 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-03-26 08:38:13,731 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:38:13,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 33 transitions, 88 flow [2021-03-26 08:38:13,732 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 33 transitions, 88 flow [2021-03-26 08:38:13,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 33 transitions, 88 flow [2021-03-26 08:38:13,751 INFO L129 PetriNetUnfolder]: 3/51 cut-off events. [2021-03-26 08:38:13,751 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 08:38:13,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 51 events. 3/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 125 event pairs, 1 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 48. Up to 8 conditions per place. [2021-03-26 08:38:13,753 INFO L142 LiptonReduction]: Number of co-enabled transitions 394 [2021-03-26 08:38:14,111 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-26 08:38:14,352 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-03-26 08:38:14,423 INFO L154 LiptonReduction]: Checked pairs total: 702 [2021-03-26 08:38:14,423 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 08:38:14,423 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 692 [2021-03-26 08:38:14,424 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 84 flow [2021-03-26 08:38:14,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-26 08:38:14,425 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:38:14,425 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:38:14,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 08:38:14,425 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:38:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:38:14,426 INFO L82 PathProgramCache]: Analyzing trace with hash 836917484, now seen corresponding path program 1 times [2021-03-26 08:38:14,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:38:14,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175040076] [2021-03-26 08:38:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:38:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:38:14,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 08:38:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:38:14,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175040076] [2021-03-26 08:38:14,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:38:14,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 08:38:14,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180876646] [2021-03-26 08:38:14,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 08:38:14,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:38:14,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 08:38:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 08:38:14,468 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 110 [2021-03-26 08:38:14,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-26 08:38:14,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:38:14,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 110 [2021-03-26 08:38:14,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:38:14,484 INFO L129 PetriNetUnfolder]: 4/55 cut-off events. [2021-03-26 08:38:14,484 INFO L130 PetriNetUnfolder]: For 11/14 co-relation queries the response was YES. [2021-03-26 08:38:14,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 55 events. 4/55 cut-off events. For 11/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 2 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2021-03-26 08:38:14,485 INFO L132 encePairwiseOnDemand]: 106/110 looper letters, 6 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2021-03-26 08:38:14,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 100 flow [2021-03-26 08:38:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 08:38:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 08:38:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2021-03-26 08:38:14,487 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7848484848484848 [2021-03-26 08:38:14,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2021-03-26 08:38:14,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2021-03-26 08:38:14,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:38:14,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2021-03-26 08:38:14,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2021-03-26 08:38:14,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-03-26 08:38:14,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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) [2021-03-26 08:38:14,489 INFO L185 Difference]: Start difference. First operand has 34 places, 31 transitions, 84 flow. Second operand 3 states and 259 transitions. [2021-03-26 08:38:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 100 flow [2021-03-26 08:38:14,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 08:38:14,491 INFO L241 Difference]: Finished difference. Result has 35 places, 31 transitions, 88 flow [2021-03-26 08:38:14,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2021-03-26 08:38:14,491 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2021-03-26 08:38:14,491 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:38:14,491 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 88 flow [2021-03-26 08:38:14,492 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 88 flow [2021-03-26 08:38:14,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 88 flow [2021-03-26 08:38:14,497 INFO L129 PetriNetUnfolder]: 4/58 cut-off events. [2021-03-26 08:38:14,497 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 08:38:14,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 58 events. 4/58 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 2 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 64. Up to 10 conditions per place. [2021-03-26 08:38:14,498 INFO L142 LiptonReduction]: Number of co-enabled transitions 370 [2021-03-26 08:38:14,500 INFO L154 LiptonReduction]: Checked pairs total: 182 [2021-03-26 08:38:14,500 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:38:14,501 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 08:38:14,502 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 88 flow [2021-03-26 08:38:14,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2021-03-26 08:38:14,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:38:14,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:38:14,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 08:38:14,502 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:38:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:38:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash -558616392, now seen corresponding path program 1 times [2021-03-26 08:38:14,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:38:14,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438664068] [2021-03-26 08:38:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:38:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:38:14,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:14,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:38:14,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:38:14,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438664068] [2021-03-26 08:38:14,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:38:14,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 08:38:14,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547046410] [2021-03-26 08:38:14,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:38:14,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:38:14,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:38:14,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:38:14,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 110 [2021-03-26 08:38:14,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 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) [2021-03-26 08:38:14,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:38:14,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 110 [2021-03-26 08:38:14,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:38:14,712 INFO L129 PetriNetUnfolder]: 70/226 cut-off events. [2021-03-26 08:38:14,712 INFO L130 PetriNetUnfolder]: For 88/90 co-relation queries the response was YES. [2021-03-26 08:38:14,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 226 events. 70/226 cut-off events. For 88/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1090 event pairs, 7 based on Foata normal form. 10/235 useless extension candidates. Maximal degree in co-relation 350. Up to 50 conditions per place. [2021-03-26 08:38:14,714 INFO L132 encePairwiseOnDemand]: 100/110 looper letters, 23 selfloop transitions, 13 changer transitions 16/69 dead transitions. [2021-03-26 08:38:14,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 274 flow [2021-03-26 08:38:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 08:38:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 08:38:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 806 transitions. [2021-03-26 08:38:14,716 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2021-03-26 08:38:14,717 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 806 transitions. [2021-03-26 08:38:14,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 806 transitions. [2021-03-26 08:38:14,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:38:14,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 806 transitions. [2021-03-26 08:38:14,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 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) [2021-03-26 08:38:14,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-03-26 08:38:14,722 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 110.0) internal successors, (1210), 11 states have internal predecessors, (1210), 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) [2021-03-26 08:38:14,722 INFO L185 Difference]: Start difference. First operand has 35 places, 31 transitions, 88 flow. Second operand 10 states and 806 transitions. [2021-03-26 08:38:14,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 274 flow [2021-03-26 08:38:14,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 08:38:14,725 INFO L241 Difference]: Finished difference. Result has 52 places, 43 transitions, 194 flow [2021-03-26 08:38:14,725 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2021-03-26 08:38:14,725 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2021-03-26 08:38:14,725 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:38:14,726 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 43 transitions, 194 flow [2021-03-26 08:38:14,726 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 43 transitions, 194 flow [2021-03-26 08:38:14,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 50 places, 43 transitions, 194 flow [2021-03-26 08:38:14,737 INFO L129 PetriNetUnfolder]: 20/135 cut-off events. [2021-03-26 08:38:14,737 INFO L130 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2021-03-26 08:38:14,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 135 events. 20/135 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 611 event pairs, 2 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 263. Up to 18 conditions per place. [2021-03-26 08:38:14,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 438 [2021-03-26 08:38:14,762 INFO L154 LiptonReduction]: Checked pairs total: 368 [2021-03-26 08:38:14,762 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 08:38:14,763 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 08:38:14,764 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 196 flow [2021-03-26 08:38:14,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 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) [2021-03-26 08:38:14,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 08:38:14,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 08:38:14,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 08:38:14,764 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 08:38:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 08:38:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1842089782, now seen corresponding path program 2 times [2021-03-26 08:38:14,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 08:38:14,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360663963] [2021-03-26 08:38:14,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 08:38:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 08:38:14,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:14,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 08:38:14,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 08:38:14,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 08:38:14,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 08:38:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 08:38:14,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360663963] [2021-03-26 08:38:14,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 08:38:14,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 08:38:14,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053806447] [2021-03-26 08:38:14,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 08:38:14,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 08:38:14,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 08:38:14,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-26 08:38:14,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 111 [2021-03-26 08:38:14,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:38:14,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 08:38:14,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 111 [2021-03-26 08:38:14,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 08:38:14,955 INFO L129 PetriNetUnfolder]: 93/246 cut-off events. [2021-03-26 08:38:14,955 INFO L130 PetriNetUnfolder]: For 296/318 co-relation queries the response was YES. [2021-03-26 08:38:14,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 246 events. 93/246 cut-off events. For 296/318 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1092 event pairs, 0 based on Foata normal form. 20/266 useless extension candidates. Maximal degree in co-relation 676. Up to 61 conditions per place. [2021-03-26 08:38:14,957 INFO L132 encePairwiseOnDemand]: 100/111 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-03-26 08:38:14,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 486 flow [2021-03-26 08:38:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-26 08:38:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-26 08:38:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 836 transitions. [2021-03-26 08:38:14,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7531531531531531 [2021-03-26 08:38:14,960 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 836 transitions. [2021-03-26 08:38:14,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 836 transitions. [2021-03-26 08:38:14,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 08:38:14,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 836 transitions. [2021-03-26 08:38:14,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.6) internal successors, (836), 10 states have internal predecessors, (836), 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) [2021-03-26 08:38:14,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2021-03-26 08:38:14,965 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 111.0) internal successors, (1221), 11 states have internal predecessors, (1221), 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) [2021-03-26 08:38:14,966 INFO L185 Difference]: Start difference. First operand has 50 places, 43 transitions, 196 flow. Second operand 10 states and 836 transitions. [2021-03-26 08:38:14,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 486 flow [2021-03-26 08:38:14,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 448 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-03-26 08:38:14,973 INFO L241 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2021-03-26 08:38:14,974 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2021-03-26 08:38:14,975 INFO L343 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2021-03-26 08:38:14,975 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 08:38:14,975 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 0 transitions, 0 flow [2021-03-26 08:38:14,976 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 0 transitions, 0 flow [2021-03-26 08:38:14,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 08:38:14,981 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 08:38:14,981 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 08:38:14,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-26 08:38:14,981 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 08:38:14,982 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 08:38:14,982 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 08:38:14,982 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-26 08:38:14,982 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 08:38:14,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 79.5) internal successors, (477), 6 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 08:38:14,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 08:38:14,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 08:38:14 BasicIcfg [2021-03-26 08:38:14,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 08:38:14,987 INFO L168 Benchmark]: Toolchain (without parser) took 3829.67 ms. Allocated memory was 255.9 MB in the beginning and 459.3 MB in the end (delta: 203.4 MB). Free memory was 236.0 MB in the beginning and 201.9 MB in the end (delta: 34.0 MB). Peak memory consumption was 237.4 MB. Max. memory is 16.0 GB. [2021-03-26 08:38:14,987 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:38:14,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.34 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 235.5 MB in the beginning and 345.8 MB in the end (delta: -110.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-26 08:38:14,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 381.7 MB. Free memory was 345.8 MB in the beginning and 344.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:38:14,988 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 381.7 MB. Free memory was 344.0 MB in the beginning and 342.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 08:38:14,989 INFO L168 Benchmark]: RCFGBuilder took 418.65 ms. Allocated memory is still 381.7 MB. Free memory was 342.4 MB in the beginning and 358.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. [2021-03-26 08:38:14,989 INFO L168 Benchmark]: TraceAbstraction took 2937.93 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 358.1 MB in the beginning and 201.9 MB in the end (delta: 156.2 MB). Peak memory consumption was 232.4 MB. Max. memory is 16.0 GB. [2021-03-26 08:38:14,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 419.34 ms. Allocated memory was 255.9 MB in the beginning and 381.7 MB in the end (delta: 125.8 MB). Free memory was 235.5 MB in the beginning and 345.8 MB in the end (delta: -110.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 381.7 MB. Free memory was 345.8 MB in the beginning and 344.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 381.7 MB. Free memory was 344.0 MB in the beginning and 342.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 418.65 ms. Allocated memory is still 381.7 MB. Free memory was 342.4 MB in the beginning and 358.9 MB in the end (delta: -16.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2937.93 ms. Allocated memory was 381.7 MB in the beginning and 459.3 MB in the end (delta: 77.6 MB). Free memory was 358.1 MB in the beginning and 201.9 MB in the end (delta: 156.2 MB). Peak memory consumption was 232.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1268.9ms, 62 PlacesBefore, 36 PlacesAfterwards, 62 TransitionsBefore, 32 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 34 TotalNumberOfCompositions, 1435 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 851, positive: 795, positive conditional: 795, positive unconditional: 0, negative: 56, negative conditional: 56, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 851, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 851, positive: 795, positive conditional: 0, positive unconditional: 795, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 564, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 564, positive: 536, positive conditional: 0, positive unconditional: 536, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 72, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 851, positive: 256, positive conditional: 0, positive unconditional: 256, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 564, unknown conditional: 0, unknown unconditional: 564] , Statistics on independence cache: Total cache size (in pairs): 564, Positive cache size: 539, Positive conditional cache size: 0, Positive unconditional cache size: 539, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 691.2ms, 36 PlacesBefore, 34 PlacesAfterwards, 33 TransitionsBefore, 31 TransitionsAfterwards, 394 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 702 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 281, positive: 233, positive conditional: 233, positive unconditional: 0, negative: 48, negative conditional: 48, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 281, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 48, negative conditional: 3, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 281, positive: 233, positive conditional: 0, positive unconditional: 233, negative: 48, negative conditional: 3, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 27, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 27, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 1, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 3, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 281, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 45, negative conditional: 2, negative unconditional: 43, unknown: 27, unknown conditional: 1, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 591, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 28, Negative conditional cache size: 1, Negative unconditional cache size: 27, Eliminated conditions: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7ms, 35 PlacesBefore, 35 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 370 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 182 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 73, positive: 60, positive conditional: 60, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 73, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 60, positive conditional: 0, positive unconditional: 60, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 73, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 593, Positive cache size: 565, Positive conditional cache size: 0, Positive unconditional cache size: 565, Negative cache size: 28, Negative conditional cache size: 1, Negative unconditional cache size: 27, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.3ms, 52 PlacesBefore, 50 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 438 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 368 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 179, positive: 157, positive conditional: 157, positive unconditional: 0, negative: 22, negative conditional: 22, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 179, positive: 157, positive conditional: 22, positive unconditional: 135, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 179, positive: 157, positive conditional: 22, positive unconditional: 135, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 3, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 179, positive: 147, positive conditional: 19, positive unconditional: 128, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 10, unknown conditional: 3, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 603, Positive cache size: 575, Positive conditional cache size: 3, Positive unconditional cache size: 572, Negative cache size: 28, Negative conditional cache size: 1, Negative unconditional cache size: 27, Eliminated conditions: 34 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3ms, 55 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 603, Positive cache size: 575, Positive conditional cache size: 3, Positive unconditional cache size: 572, Negative cache size: 28, Negative conditional cache size: 1, Negative unconditional cache size: 27, Eliminated conditions: 0 - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2854.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 436.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1329.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 71 SDtfs, 62 SDslu, 54 SDs, 0 SdLazy, 196 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 131.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 100.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=3, InterpolantAutomatonStates: 26, 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: 7.3ms SsaConstructionTime, 44.1ms SatisfiabilityAnalysisTime, 168.2ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...