/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:49:46,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:49:46,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:49:47,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:49:47,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:49:47,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:49:47,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:49:47,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:49:47,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:49:47,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:49:47,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:49:47,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:49:47,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:49:47,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:49:47,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:49:47,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:49:47,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:49:47,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:49:47,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:49:47,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:49:47,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:49:47,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:49:47,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:49:47,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:49:47,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 22:49:47,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:49:47,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:49:47,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:49:47,073 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-25 22:49:47,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:49:47,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:49:47,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:49:47,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:49:47,103 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:49:47,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:49:47,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:49:47,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:49:47,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:49:47,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:49:47,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:49:47,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:49:47,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:49:47,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:49:47,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:49:47,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:49:47,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-25 22:49:47,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:49:47,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:49:47,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:49:47,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:49:47,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:49:47,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:49:47,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 22:49:47,369 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 22:49:47,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-25 22:49:47,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0152421b2/2189b8cdf0ee4de19dc3d3a9a474cdc5/FLAG3c3f360cf [2021-03-25 22:49:47,786 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 22:49:47,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/dekker.i [2021-03-25 22:49:47,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0152421b2/2189b8cdf0ee4de19dc3d3a9a474cdc5/FLAG3c3f360cf [2021-03-25 22:49:48,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0152421b2/2189b8cdf0ee4de19dc3d3a9a474cdc5 [2021-03-25 22:49:48,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:49:48,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 22:49:48,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 22:49:48,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 22:49:48,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 22:49:48,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618a643a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48, skipping insertion in model container [2021-03-25 22:49:48,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 22:49:48,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 22:49:48,288 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 22:49:48,387 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/dekker.i[31403,31416] [2021-03-25 22:49:48,393 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/dekker.i[32483,32496] [2021-03-25 22:49:48,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:49:48,410 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 22:49:48,471 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-03-25 22:49:48,485 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/dekker.i[31403,31416] [2021-03-25 22:49:48,487 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/dekker.i[32483,32496] [2021-03-25 22:49:48,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 22:49:48,533 INFO L208 MainTranslator]: Completed translation [2021-03-25 22:49:48,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48 WrapperNode [2021-03-25 22:49:48,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 22:49:48,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:49:48,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:49:48,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:49:48,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:49:48,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:49:48,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:49:48,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:49:48,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (1/1) ... [2021-03-25 22:49:48,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:49:48,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:49:48,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:49:48,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:49:48,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (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 [2021-03-25 22:49:48,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 22:49:48,674 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-03-25 22:49:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 22:49:48,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 22:49:48,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 22:49:48,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:49:48,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:49:48,677 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 22:49:48,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:49:48,958 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-25 22:49:48,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:49:48 BoogieIcfgContainer [2021-03-25 22:49:48,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:49:48,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:49:48,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:49:48,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:49:48,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 10:49:48" (1/3) ... [2021-03-25 22:49:48,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e9eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:49:48, skipping insertion in model container [2021-03-25 22:49:48,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 10:49:48" (2/3) ... [2021-03-25 22:49:48,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e9eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:49:48, skipping insertion in model container [2021-03-25 22:49:48,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:49:48" (3/3) ... [2021-03-25 22:49:48,964 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2021-03-25 22:49:48,967 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:49:48,970 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 22:49:48,970 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:49:48,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,987 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,987 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,988 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,989 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,990 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,991 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,992 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,993 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,994 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,995 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,996 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,997 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,997 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,998 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:48,998 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,000 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,001 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,001 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,001 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,001 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,001 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:49:49,005 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-25 22:49:49,016 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-25 22:49:49,029 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:49:49,029 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:49:49,029 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:49:49,029 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:49:49,029 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:49:49,029 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:49:49,030 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:49:49,030 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:49:49,036 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2021-03-25 22:49:49,066 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2021-03-25 22:49:49,066 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:49:49,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2021-03-25 22:49:49,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 96 transitions, 214 flow [2021-03-25 22:49:49,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 84 transitions, 180 flow [2021-03-25 22:49:49,087 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:49,096 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-25 22:49:49,100 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 84 transitions, 180 flow [2021-03-25 22:49:49,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 84 transitions, 180 flow [2021-03-25 22:49:49,130 INFO L129 PetriNetUnfolder]: 13/86 cut-off events. [2021-03-25 22:49:49,130 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:49:49,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 13/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-03-25 22:49:49,134 INFO L142 LiptonReduction]: Number of co-enabled transitions 2028 [2021-03-25 22:49:50,232 INFO L154 LiptonReduction]: Checked pairs total: 1427 [2021-03-25 22:49:50,232 INFO L156 LiptonReduction]: Total number of compositions: 52 [2021-03-25 22:49:50,233 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1147 [2021-03-25 22:49:50,239 INFO L129 PetriNetUnfolder]: 1/16 cut-off events. [2021-03-25 22:49:50,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:49:50,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:49:50,240 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:49:50,240 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:49:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:49:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1854467217, now seen corresponding path program 1 times [2021-03-25 22:49:50,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:49:50,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770304889] [2021-03-25 22:49:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:49:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:49:50,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:50,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:49:50,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770304889] [2021-03-25 22:49:50,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:49:50,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:49:50,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109766596] [2021-03-25 22:49:50,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-25 22:49:50,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:49:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-25 22:49:50,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-25 22:49:50,344 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 148 [2021-03-25 22:49:50,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 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) [2021-03-25 22:49:50,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:49:50,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 148 [2021-03-25 22:49:50,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:49:50,357 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-25 22:49:50,358 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:49:50,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 6/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 49. Up to 3 conditions per place. [2021-03-25 22:49:50,358 INFO L132 encePairwiseOnDemand]: 146/148 looper letters, 0 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2021-03-25 22:49:50,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 96 flow [2021-03-25 22:49:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-25 22:49:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-03-25 22:49:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 262 transitions. [2021-03-25 22:49:50,370 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8851351351351351 [2021-03-25 22:49:50,370 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 262 transitions. [2021-03-25 22:49:50,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 262 transitions. [2021-03-25 22:49:50,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:49:50,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 262 transitions. [2021-03-25 22:49:50,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.0) internal successors, (262), 2 states have internal predecessors, (262), 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) [2021-03-25 22:49:50,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2021-03-25 22:49:50,383 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2021-03-25 22:49:50,384 INFO L185 Difference]: Start difference. First operand has 43 places, 45 transitions, 102 flow. Second operand 2 states and 262 transitions. [2021-03-25 22:49:50,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 96 flow [2021-03-25 22:49:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:49:50,391 INFO L241 Difference]: Finished difference. Result has 39 places, 42 transitions, 88 flow [2021-03-25 22:49:50,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2021-03-25 22:49:50,393 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-25 22:49:50,393 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:50,393 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 42 transitions, 88 flow [2021-03-25 22:49:50,394 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 42 transitions, 88 flow [2021-03-25 22:49:50,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 42 transitions, 88 flow [2021-03-25 22:49:50,400 INFO L129 PetriNetUnfolder]: 6/43 cut-off events. [2021-03-25 22:49:50,401 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:49:50,401 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2021-03-25 22:49:50,401 INFO L142 LiptonReduction]: Number of co-enabled transitions 690 [2021-03-25 22:49:51,041 INFO L154 LiptonReduction]: Checked pairs total: 848 [2021-03-25 22:49:51,042 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 22:49:51,042 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 649 [2021-03-25 22:49:51,043 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 39 transitions, 82 flow [2021-03-25 22:49:51,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 130.5) internal successors, (261), 2 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) [2021-03-25 22:49:51,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:49:51,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:49:51,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:49:51,043 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:49:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:49:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 120944202, now seen corresponding path program 1 times [2021-03-25 22:49:51,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:49:51,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642294035] [2021-03-25 22:49:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:49:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:49:51,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:49:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:49:51,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642294035] [2021-03-25 22:49:51,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:49:51,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:49:51,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507276277] [2021-03-25 22:49:51,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:49:51,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:49:51,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:49:51,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:49:51,084 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2021-03-25 22:49:51,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 39 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-03-25 22:49:51,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:49:51,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2021-03-25 22:49:51,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:49:51,103 INFO L129 PetriNetUnfolder]: 9/77 cut-off events. [2021-03-25 22:49:51,103 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:49:51,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 77 events. 9/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 325 event pairs, 1 based on Foata normal form. 4/68 useless extension candidates. Maximal degree in co-relation 80. Up to 14 conditions per place. [2021-03-25 22:49:51,104 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 5 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2021-03-25 22:49:51,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 108 flow [2021-03-25 22:49:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:49:51,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:49:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2021-03-25 22:49:51,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7625272331154684 [2021-03-25 22:49:51,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2021-03-25 22:49:51,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2021-03-25 22:49:51,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:49:51,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2021-03-25 22:49:51,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2021-03-25 22:49:51,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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) [2021-03-25 22:49:51,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 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) [2021-03-25 22:49:51,107 INFO L185 Difference]: Start difference. First operand has 35 places, 39 transitions, 82 flow. Second operand 3 states and 350 transitions. [2021-03-25 22:49:51,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 108 flow [2021-03-25 22:49:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 22:49:51,108 INFO L241 Difference]: Finished difference. Result has 39 places, 41 transitions, 112 flow [2021-03-25 22:49:51,108 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2021-03-25 22:49:51,109 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-25 22:49:51,109 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:51,109 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 41 transitions, 112 flow [2021-03-25 22:49:51,109 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 41 transitions, 112 flow [2021-03-25 22:49:51,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 41 transitions, 112 flow [2021-03-25 22:49:51,113 INFO L129 PetriNetUnfolder]: 6/67 cut-off events. [2021-03-25 22:49:51,113 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 22:49:51,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 67 events. 6/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 282 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 73. Up to 9 conditions per place. [2021-03-25 22:49:51,114 INFO L142 LiptonReduction]: Number of co-enabled transitions 658 [2021-03-25 22:49:51,272 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-03-25 22:49:51,488 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2021-03-25 22:49:51,560 INFO L154 LiptonReduction]: Checked pairs total: 460 [2021-03-25 22:49:51,560 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:49:51,561 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 452 [2021-03-25 22:49:51,561 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 104 flow [2021-03-25 22:49:51,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-03-25 22:49:51,562 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:49:51,562 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:49:51,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:49:51,562 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:49:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:49:51,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1128304159, now seen corresponding path program 1 times [2021-03-25 22:49:51,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:49:51,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622002635] [2021-03-25 22:49:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:49:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:49:51,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:49:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:49:51,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622002635] [2021-03-25 22:49:51,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:49:51,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 22:49:51,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875613061] [2021-03-25 22:49:51,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 22:49:51,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:49:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 22:49:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 22:49:51,596 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 154 [2021-03-25 22:49:51,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-03-25 22:49:51,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:49:51,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 154 [2021-03-25 22:49:51,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:49:51,618 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2021-03-25 22:49:51,618 INFO L130 PetriNetUnfolder]: For 10/16 co-relation queries the response was YES. [2021-03-25 22:49:51,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 62 events. 6/62 cut-off events. For 10/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 239 event pairs, 0 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 78. Up to 9 conditions per place. [2021-03-25 22:49:51,619 INFO L132 encePairwiseOnDemand]: 150/154 looper letters, 5 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2021-03-25 22:49:51,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 120 flow [2021-03-25 22:49:51,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 22:49:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 22:49:51,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-25 22:49:51,621 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7532467532467533 [2021-03-25 22:49:51,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-25 22:49:51,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-25 22:49:51,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:49:51,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-25 22:49:51,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2021-03-25 22:49:51,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2021-03-25 22:49:51,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2021-03-25 22:49:51,623 INFO L185 Difference]: Start difference. First operand has 38 places, 39 transitions, 104 flow. Second operand 3 states and 348 transitions. [2021-03-25 22:49:51,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 120 flow [2021-03-25 22:49:51,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:49:51,624 INFO L241 Difference]: Finished difference. Result has 39 places, 39 transitions, 107 flow [2021-03-25 22:49:51,624 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2021-03-25 22:49:51,625 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2021-03-25 22:49:51,625 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:51,625 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 39 transitions, 107 flow [2021-03-25 22:49:51,625 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 39 transitions, 107 flow [2021-03-25 22:49:51,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 39 transitions, 107 flow [2021-03-25 22:49:51,628 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2021-03-25 22:49:51,628 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 22:49:51,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 62 events. 6/62 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 68. Up to 9 conditions per place. [2021-03-25 22:49:51,629 INFO L142 LiptonReduction]: Number of co-enabled transitions 622 [2021-03-25 22:49:51,631 INFO L154 LiptonReduction]: Checked pairs total: 203 [2021-03-25 22:49:51,631 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:49:51,631 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 22:49:51,632 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 107 flow [2021-03-25 22:49:51,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2021-03-25 22:49:51,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:49:51,632 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:49:51,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:49:51,632 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:49:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:49:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1911891639, now seen corresponding path program 1 times [2021-03-25 22:49:51,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:49:51,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978703388] [2021-03-25 22:49:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:49:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:49:51,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:49:51,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:49:51,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:49:51,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978703388] [2021-03-25 22:49:51,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:49:51,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:49:51,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833955844] [2021-03-25 22:49:51,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:49:51,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:49:51,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:49:51,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:49:51,676 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 154 [2021-03-25 22:49:51,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2021-03-25 22:49:51,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:49:51,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 154 [2021-03-25 22:49:51,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:49:51,736 INFO L129 PetriNetUnfolder]: 62/204 cut-off events. [2021-03-25 22:49:51,736 INFO L130 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2021-03-25 22:49:51,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 204 events. 62/204 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1020 event pairs, 8 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 276. Up to 41 conditions per place. [2021-03-25 22:49:51,739 INFO L132 encePairwiseOnDemand]: 145/154 looper letters, 16 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2021-03-25 22:49:51,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 206 flow [2021-03-25 22:49:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:49:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:49:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2021-03-25 22:49:51,741 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7623376623376623 [2021-03-25 22:49:51,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2021-03-25 22:49:51,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2021-03-25 22:49:51,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:49:51,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2021-03-25 22:49:51,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 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) [2021-03-25 22:49:51,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2021-03-25 22:49:51,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2021-03-25 22:49:51,745 INFO L185 Difference]: Start difference. First operand has 39 places, 39 transitions, 107 flow. Second operand 5 states and 587 transitions. [2021-03-25 22:49:51,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 206 flow [2021-03-25 22:49:51,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 22:49:51,748 INFO L241 Difference]: Finished difference. Result has 45 places, 47 transitions, 180 flow [2021-03-25 22:49:51,748 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2021-03-25 22:49:51,748 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2021-03-25 22:49:51,748 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:51,749 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 47 transitions, 180 flow [2021-03-25 22:49:51,755 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 47 transitions, 180 flow [2021-03-25 22:49:51,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 180 flow [2021-03-25 22:49:51,761 INFO L129 PetriNetUnfolder]: 33/120 cut-off events. [2021-03-25 22:49:51,761 INFO L130 PetriNetUnfolder]: For 45/57 co-relation queries the response was YES. [2021-03-25 22:49:51,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 120 events. 33/120 cut-off events. For 45/57 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 502 event pairs, 2 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 205. Up to 26 conditions per place. [2021-03-25 22:49:51,762 INFO L142 LiptonReduction]: Number of co-enabled transitions 698 [2021-03-25 22:49:51,765 INFO L154 LiptonReduction]: Checked pairs total: 117 [2021-03-25 22:49:51,765 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:49:51,765 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 22:49:51,771 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 180 flow [2021-03-25 22:49:51,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 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) [2021-03-25 22:49:51,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:49:51,772 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:49:51,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:49:51,772 INFO L428 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 22:49:51,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:49:51,773 INFO L82 PathProgramCache]: Analyzing trace with hash 669214875, now seen corresponding path program 1 times [2021-03-25 22:49:51,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:49:51,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138087191] [2021-03-25 22:49:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:49:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:49:51,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:49:51,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:49:51,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:49:51,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:49:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:49:51,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138087191] [2021-03-25 22:49:51,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:49:51,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:49:51,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603932197] [2021-03-25 22:49:51,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:49:51,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:49:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:49:51,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:49:51,805 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 154 [2021-03-25 22:49:51,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2021-03-25 22:49:51,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:49:51,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 154 [2021-03-25 22:49:51,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:49:51,853 INFO L129 PetriNetUnfolder]: 120/290 cut-off events. [2021-03-25 22:49:51,853 INFO L130 PetriNetUnfolder]: For 95/103 co-relation queries the response was YES. [2021-03-25 22:49:51,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 290 events. 120/290 cut-off events. For 95/103 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1371 event pairs, 10 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 564. Up to 57 conditions per place. [2021-03-25 22:49:51,854 INFO L132 encePairwiseOnDemand]: 145/154 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2021-03-25 22:49:51,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 262 flow [2021-03-25 22:49:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:49:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:49:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2021-03-25 22:49:51,855 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7480519480519481 [2021-03-25 22:49:51,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2021-03-25 22:49:51,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2021-03-25 22:49:51,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:49:51,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2021-03-25 22:49:51,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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) [2021-03-25 22:49:51,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2021-03-25 22:49:51,858 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 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) [2021-03-25 22:49:51,858 INFO L185 Difference]: Start difference. First operand has 45 places, 47 transitions, 180 flow. Second operand 5 states and 576 transitions. [2021-03-25 22:49:51,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 262 flow [2021-03-25 22:49:51,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:49:51,860 INFO L241 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-03-25 22:49:51,860 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-03-25 22:49:51,861 INFO L343 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2021-03-25 22:49:51,861 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-25 22:49:51,861 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-25 22:49:51,861 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 0 transitions, 0 flow [2021-03-25 22:49:51,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 22:49:51,861 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 22:49:51,861 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:49:51,861 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. [2021-03-25 22:49:51,861 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 22:49:51,861 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:49:51,861 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:49:51,862 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 22:49:51,862 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 22:49:51,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 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) [2021-03-25 22:49:51,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 22:49:51,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:49:51 BasicIcfg [2021-03-25 22:49:51,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:49:51,866 INFO L168 Benchmark]: Toolchain (without parser) took 3708.07 ms. Allocated memory was 255.9 MB in the beginning and 478.2 MB in the end (delta: 222.3 MB). Free memory was 234.4 MB in the beginning and 407.2 MB in the end (delta: -172.8 MB). Peak memory consumption was 49.2 MB. Max. memory is 16.0 GB. [2021-03-25 22:49:51,866 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:49:51,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.54 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.4 MB in the beginning and 363.1 MB in the end (delta: -128.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.0 GB. [2021-03-25 22:49:51,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 398.5 MB. Free memory was 363.1 MB in the beginning and 361.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:49:51,867 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 398.5 MB. Free memory was 361.0 MB in the beginning and 359.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:49:51,867 INFO L168 Benchmark]: RCFGBuilder took 354.82 ms. Allocated memory is still 398.5 MB. Free memory was 359.7 MB in the beginning and 335.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 22:49:51,868 INFO L168 Benchmark]: TraceAbstraction took 2904.91 ms. Allocated memory was 398.5 MB in the beginning and 478.2 MB in the end (delta: 79.7 MB). Free memory was 335.2 MB in the beginning and 407.2 MB in the end (delta: -72.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.0 GB. [2021-03-25 22:49:51,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 373.54 ms. Allocated memory was 255.9 MB in the beginning and 398.5 MB in the end (delta: 142.6 MB). Free memory was 234.4 MB in the beginning and 363.1 MB in the end (delta: -128.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 398.5 MB. Free memory was 363.1 MB in the beginning and 361.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 398.5 MB. Free memory was 361.0 MB in the beginning and 359.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 354.82 ms. Allocated memory is still 398.5 MB. Free memory was 359.7 MB in the beginning and 335.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2904.91 ms. Allocated memory was 398.5 MB in the beginning and 478.2 MB in the end (delta: 79.7 MB). Free memory was 335.2 MB in the beginning and 407.2 MB in the end (delta: -72.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1132.4ms, 77 PlacesBefore, 43 PlacesAfterwards, 84 TransitionsBefore, 45 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 52 TotalNumberOfCompositions, 1427 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1138, positive: 1118, positive conditional: 1118, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1003, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1003, positive: 989, positive conditional: 0, positive unconditional: 989, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1003, positive: 980, positive conditional: 0, positive unconditional: 980, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 44, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1138, positive: 129, positive conditional: 129, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 1003, unknown conditional: 1003, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 26, Positive conditional cache size: 26, Positive unconditional cache size: 0, Negative cache size: 4, Negative conditional cache size: 4, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 647.3ms, 39 PlacesBefore, 35 PlacesAfterwards, 42 TransitionsBefore, 39 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 848 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 310, positive: 266, positive conditional: 266, positive unconditional: 0, negative: 44, negative conditional: 44, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 111, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 111, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 111, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 310, positive: 165, positive conditional: 165, positive unconditional: 0, negative: 34, negative conditional: 34, negative unconditional: 0, unknown: 111, unknown conditional: 111, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 66, Positive conditional cache size: 66, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 451.4ms, 39 PlacesBefore, 38 PlacesAfterwards, 41 TransitionsBefore, 39 TransitionsAfterwards, 658 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 121, positive: 96, positive conditional: 96, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 21, positive: 19, positive conditional: 2, positive unconditional: 17, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, positive: 19, positive conditional: 2, positive unconditional: 17, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 121, positive: 77, positive conditional: 77, positive unconditional: 0, negative: 23, negative conditional: 23, negative unconditional: 0, unknown: 21, unknown conditional: 21, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 75, Positive conditional cache size: 75, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9ms, 39 PlacesBefore, 39 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 622 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 49, positive: 38, positive conditional: 38, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 3, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 49, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 91, Positive cache size: 78, Positive conditional cache size: 78, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2ms, 45 PlacesBefore, 45 PlacesAfterwards, 47 TransitionsBefore, 47 TransitionsAfterwards, 698 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 117 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 5, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 5, positive unconditional: 4, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 34, positive: 19, positive conditional: 19, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 9, unknown conditional: 9, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 87, Positive conditional cache size: 87, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 45 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: 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: 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: 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): 100, Positive cache size: 87, Positive conditional cache size: 87, Positive unconditional cache size: 0, Negative cache size: 13, Negative conditional cache size: 13, Negative unconditional cache size: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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, 82 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2836.5ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 237.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1207.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 49 SDtfs, 24 SDslu, 18 SDs, 0 SdLazy, 68 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=4, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 37.0ms SatisfiabilityAnalysisTime, 110.4ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...