/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:07:27,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:07:27,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:07:27,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:07:27,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:07:27,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:07:27,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:07:27,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:07:27,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:07:27,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:07:27,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:07:27,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:07:27,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:07:27,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:07:27,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:07:27,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:07:27,523 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:07:27,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:07:27,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:07:27,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:07:27,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:07:27,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:07:27,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:07:27,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:07:27,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:07:27,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:07:27,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:07:27,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:07:27,550 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-RepeatedVariableLbe.epf [2021-03-25 05:07:27,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:07:27,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:07:27,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:07:27,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:07:27,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:07:27,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:07:27,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:07:27,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:07:27,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:07:27,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:07:27,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:07:27,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:07:27,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:07:27,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:07:27,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:07:27,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:07:27,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:07:27,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:07:27,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:07:27,879 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:07:27,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2021-03-25 05:07:27,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f155a954/9b9e8a9839ec4ac79576b589427f0e1d/FLAG9add5b80d [2021-03-25 05:07:28,383 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:07:28,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2021-03-25 05:07:28,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f155a954/9b9e8a9839ec4ac79576b589427f0e1d/FLAG9add5b80d [2021-03-25 05:07:28,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f155a954/9b9e8a9839ec4ac79576b589427f0e1d [2021-03-25 05:07:28,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:07:28,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:07:28,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:07:28,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:07:28,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:07:28,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:07:28" (1/1) ... [2021-03-25 05:07:28,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3888e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:28, skipping insertion in model container [2021-03-25 05:07:28,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:07:28" (1/1) ... [2021-03-25 05:07:28,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:07:28,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:07:28,965 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-wmm/safe024_tso.opt.i[949,962] [2021-03-25 05:07:29,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:07:29,098 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:07:29,106 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-wmm/safe024_tso.opt.i[949,962] [2021-03-25 05:07:29,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:07:29,191 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:07:29,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29 WrapperNode [2021-03-25 05:07:29,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:07:29,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:07:29,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:07:29,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:07:29,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:07:29,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:07:29,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:07:29,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:07:29,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (1/1) ... [2021-03-25 05:07:29,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:07:29,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:07:29,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:07:29,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:07:29,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (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 05:07:29,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:07:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:07:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:07:29,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:07:29,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:07:29,332 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:07:29,332 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:07:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:07:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:07:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:07:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:07:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:07:29,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:07:29,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:07:29,334 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 05:07:29,655 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:07:29,655 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:07:29,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:07:29 BoogieIcfgContainer [2021-03-25 05:07:29,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:07:29,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:07:29,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:07:29,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:07:29,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:07:28" (1/3) ... [2021-03-25 05:07:29,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2932b9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:07:29, skipping insertion in model container [2021-03-25 05:07:29,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:07:29" (2/3) ... [2021-03-25 05:07:29,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2932b9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:07:29, skipping insertion in model container [2021-03-25 05:07:29,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:07:29" (3/3) ... [2021-03-25 05:07:29,663 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2021-03-25 05:07:29,667 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:07:29,671 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:07:29,672 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,694 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,695 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,704 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,706 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,706 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,707 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:07:29,708 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:07:29,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:07:29,737 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:07:29,737 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:07:29,737 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:07:29,737 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:07:29,737 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:07:29,737 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:07:29,737 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:07:29,737 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:07:29,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:07:29,787 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-25 05:07:29,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:07:29,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:07:29,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-25 05:07:29,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-25 05:07:29,797 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:29,804 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:07:29,810 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-25 05:07:29,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-25 05:07:29,836 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-25 05:07:29,836 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:07:29,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:07:29,838 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:07:31,163 INFO L154 LiptonReduction]: Checked pairs total: 1248 [2021-03-25 05:07:31,163 INFO L156 LiptonReduction]: Total number of compositions: 43 [2021-03-25 05:07:31,164 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1368 [2021-03-25 05:07:31,175 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:07:31,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:07:31,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:31,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:31,176 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash -965258852, now seen corresponding path program 1 times [2021-03-25 05:07:31,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:31,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126693644] [2021-03-25 05:07:31,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:31,334 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:07:31,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:07:31,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:07:31,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:07:31,352 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 05:07:31,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126693644] [2021-03-25 05:07:31,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:31,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:07:31,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38901987] [2021-03-25 05:07:31,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:07:31,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:31,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:07:31,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:07:31,371 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-03-25 05:07:31,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 05:07:31,373 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:31,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-03-25 05:07:31,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:31,407 INFO L129 PetriNetUnfolder]: 14/56 cut-off events. [2021-03-25 05:07:31,408 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:07:31,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 56 events. 14/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 160 event pairs, 7 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 91. Up to 28 conditions per place. [2021-03-25 05:07:31,409 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 5 selfloop transitions, 3 changer transitions 6/28 dead transitions. [2021-03-25 05:07:31,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 93 flow [2021-03-25 05:07:31,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:07:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:07:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2021-03-25 05:07:31,420 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8084033613445378 [2021-03-25 05:07:31,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2021-03-25 05:07:31,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2021-03-25 05:07:31,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:31,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2021-03-25 05:07:31,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 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 05:07:31,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 05:07:31,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 05:07:31,436 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 5 states and 481 transitions. [2021-03-25 05:07:31,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 93 flow [2021-03-25 05:07:31,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 90 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:07:31,439 INFO L241 Difference]: Finished difference. Result has 34 places, 22 transitions, 73 flow [2021-03-25 05:07:31,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2021-03-25 05:07:31,442 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 05:07:31,442 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:31,443 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 22 transitions, 73 flow [2021-03-25 05:07:31,443 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 22 transitions, 73 flow [2021-03-25 05:07:31,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 22 transitions, 73 flow [2021-03-25 05:07:31,448 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-03-25 05:07:31,448 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 05:07:31,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 31 events. 5/31 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 2 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 56. Up to 12 conditions per place. [2021-03-25 05:07:31,449 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 05:07:31,746 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:07:31,957 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-25 05:07:32,019 INFO L154 LiptonReduction]: Checked pairs total: 342 [2021-03-25 05:07:32,019 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:07:32,019 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 577 [2021-03-25 05:07:32,020 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 69 flow [2021-03-25 05:07:32,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 05:07:32,020 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:07:32,020 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,021 INFO L82 PathProgramCache]: Analyzing trace with hash 141119710, now seen corresponding path program 1 times [2021-03-25 05:07:32,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534834531] [2021-03-25 05:07:32,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:32,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,080 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:07:32,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:07:32,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:07:32,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:07:32,091 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 05:07:32,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534834531] [2021-03-25 05:07:32,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:07:32,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727137358] [2021-03-25 05:07:32,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:07:32,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:07:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:07:32,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 121 [2021-03-25 05:07:32,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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 05:07:32,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 121 [2021-03-25 05:07:32,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,160 INFO L129 PetriNetUnfolder]: 48/128 cut-off events. [2021-03-25 05:07:32,161 INFO L130 PetriNetUnfolder]: For 94/99 co-relation queries the response was YES. [2021-03-25 05:07:32,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 128 events. 48/128 cut-off events. For 94/99 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 532 event pairs, 2 based on Foata normal form. 15/143 useless extension candidates. Maximal degree in co-relation 309. Up to 45 conditions per place. [2021-03-25 05:07:32,162 INFO L132 encePairwiseOnDemand]: 114/121 looper letters, 12 selfloop transitions, 11 changer transitions 12/46 dead transitions. [2021-03-25 05:07:32,162 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 247 flow [2021-03-25 05:07:32,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 05:07:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 05:07:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 829 transitions. [2021-03-25 05:07:32,166 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.761248852157943 [2021-03-25 05:07:32,166 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 829 transitions. [2021-03-25 05:07:32,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 829 transitions. [2021-03-25 05:07:32,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 829 transitions. [2021-03-25 05:07:32,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.11111111111111) internal successors, (829), 9 states have internal predecessors, (829), 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 05:07:32,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 121.0) internal successors, (1210), 10 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:07:32,172 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 121.0) internal successors, (1210), 10 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:07:32,172 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 69 flow. Second operand 9 states and 829 transitions. [2021-03-25 05:07:32,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 247 flow [2021-03-25 05:07:32,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 234 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 05:07:32,174 INFO L241 Difference]: Finished difference. Result has 43 places, 28 transitions, 166 flow [2021-03-25 05:07:32,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2021-03-25 05:07:32,175 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2021-03-25 05:07:32,175 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,175 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 28 transitions, 166 flow [2021-03-25 05:07:32,175 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 28 transitions, 166 flow [2021-03-25 05:07:32,176 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 28 transitions, 166 flow [2021-03-25 05:07:32,183 INFO L129 PetriNetUnfolder]: 29/85 cut-off events. [2021-03-25 05:07:32,183 INFO L130 PetriNetUnfolder]: For 245/251 co-relation queries the response was YES. [2021-03-25 05:07:32,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 85 events. 29/85 cut-off events. For 245/251 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 307 event pairs, 7 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 318. Up to 38 conditions per place. [2021-03-25 05:07:32,185 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-25 05:07:32,187 INFO L154 LiptonReduction]: Checked pairs total: 175 [2021-03-25 05:07:32,187 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:07:32,188 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 05:07:32,188 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 166 flow [2021-03-25 05:07:32,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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 05:07:32,189 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,189 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:07:32,189 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1822298118, now seen corresponding path program 1 times [2021-03-25 05:07:32,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83430759] [2021-03-25 05:07:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,247 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:07:32,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:07:32,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:07:32,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:07:32,257 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 05:07:32,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83430759] [2021-03-25 05:07:32,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:07:32,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431424546] [2021-03-25 05:07:32,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:07:32,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:07:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:07:32,259 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2021-03-25 05:07:32,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:07:32,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2021-03-25 05:07:32,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,283 INFO L129 PetriNetUnfolder]: 25/81 cut-off events. [2021-03-25 05:07:32,283 INFO L130 PetriNetUnfolder]: For 328/336 co-relation queries the response was YES. [2021-03-25 05:07:32,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 81 events. 25/81 cut-off events. For 328/336 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 0 based on Foata normal form. 6/87 useless extension candidates. Maximal degree in co-relation 349. Up to 43 conditions per place. [2021-03-25 05:07:32,284 INFO L132 encePairwiseOnDemand]: 117/121 looper letters, 10 selfloop transitions, 5 changer transitions 6/34 dead transitions. [2021-03-25 05:07:32,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 255 flow [2021-03-25 05:07:32,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:07:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:07:32,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2021-03-25 05:07:32,286 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7884297520661157 [2021-03-25 05:07:32,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2021-03-25 05:07:32,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2021-03-25 05:07:32,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2021-03-25 05:07:32,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:07:32,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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 05:07:32,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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 05:07:32,288 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 166 flow. Second operand 5 states and 477 transitions. [2021-03-25 05:07:32,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 255 flow [2021-03-25 05:07:32,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 224 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-25 05:07:32,291 INFO L241 Difference]: Finished difference. Result has 42 places, 28 transitions, 163 flow [2021-03-25 05:07:32,291 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=42, PETRI_TRANSITIONS=28} [2021-03-25 05:07:32,291 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-03-25 05:07:32,291 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,292 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 28 transitions, 163 flow [2021-03-25 05:07:32,292 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 28 transitions, 163 flow [2021-03-25 05:07:32,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 28 transitions, 163 flow [2021-03-25 05:07:32,297 INFO L129 PetriNetUnfolder]: 20/72 cut-off events. [2021-03-25 05:07:32,298 INFO L130 PetriNetUnfolder]: For 141/143 co-relation queries the response was YES. [2021-03-25 05:07:32,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 72 events. 20/72 cut-off events. For 141/143 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 225 event pairs, 9 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 235. Up to 31 conditions per place. [2021-03-25 05:07:32,299 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-25 05:07:32,302 INFO L154 LiptonReduction]: Checked pairs total: 167 [2021-03-25 05:07:32,302 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:07:32,302 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:07:32,303 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 163 flow [2021-03-25 05:07:32,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:07:32,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:07:32,304 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,304 INFO L82 PathProgramCache]: Analyzing trace with hash 716024012, now seen corresponding path program 1 times [2021-03-25 05:07:32,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015830395] [2021-03-25 05:07:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:07:32,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:07:32,342 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 05:07:32,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015830395] [2021-03-25 05:07:32,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:07:32,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735103961] [2021-03-25 05:07:32,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:07:32,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:07:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:07:32,344 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 121 [2021-03-25 05:07:32,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:07:32,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 121 [2021-03-25 05:07:32,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,381 INFO L129 PetriNetUnfolder]: 25/78 cut-off events. [2021-03-25 05:07:32,381 INFO L130 PetriNetUnfolder]: For 260/271 co-relation queries the response was YES. [2021-03-25 05:07:32,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 78 events. 25/78 cut-off events. For 260/271 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 279 event pairs, 4 based on Foata normal form. 13/91 useless extension candidates. Maximal degree in co-relation 290. Up to 38 conditions per place. [2021-03-25 05:07:32,382 INFO L132 encePairwiseOnDemand]: 116/121 looper letters, 2 selfloop transitions, 5 changer transitions 9/31 dead transitions. [2021-03-25 05:07:32,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:07:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:07:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2021-03-25 05:07:32,384 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7837465564738292 [2021-03-25 05:07:32,384 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2021-03-25 05:07:32,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2021-03-25 05:07:32,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2021-03-25 05:07:32,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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 05:07:32,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 05:07:32,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 05:07:32,387 INFO L185 Difference]: Start difference. First operand has 40 places, 28 transitions, 163 flow. Second operand 6 states and 569 transitions. [2021-03-25 05:07:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 193 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-25 05:07:32,390 INFO L241 Difference]: Finished difference. Result has 44 places, 22 transitions, 130 flow [2021-03-25 05:07:32,390 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=22} [2021-03-25 05:07:32,390 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2021-03-25 05:07:32,390 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,390 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 22 transitions, 130 flow [2021-03-25 05:07:32,391 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 22 transitions, 130 flow [2021-03-25 05:07:32,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 22 transitions, 130 flow [2021-03-25 05:07:32,394 INFO L129 PetriNetUnfolder]: 11/40 cut-off events. [2021-03-25 05:07:32,394 INFO L130 PetriNetUnfolder]: For 90/91 co-relation queries the response was YES. [2021-03-25 05:07:32,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 40 events. 11/40 cut-off events. For 90/91 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 76 event pairs, 4 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 142. Up to 19 conditions per place. [2021-03-25 05:07:32,395 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 05:07:32,396 INFO L154 LiptonReduction]: Checked pairs total: 90 [2021-03-25 05:07:32,396 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:07:32,397 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-03-25 05:07:32,397 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 130 flow [2021-03-25 05:07:32,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 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 05:07:32,397 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,398 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:07:32,398 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1228678540, now seen corresponding path program 1 times [2021-03-25 05:07:32,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052677689] [2021-03-25 05:07:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,444 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:07:32,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:07:32,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:32,452 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 05:07:32,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052677689] [2021-03-25 05:07:32,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:07:32,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027941232] [2021-03-25 05:07:32,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:07:32,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:07:32,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:07:32,463 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-03-25 05:07:32,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 05:07:32,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-03-25 05:07:32,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,506 INFO L129 PetriNetUnfolder]: 52/124 cut-off events. [2021-03-25 05:07:32,506 INFO L130 PetriNetUnfolder]: For 708/760 co-relation queries the response was YES. [2021-03-25 05:07:32,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 124 events. 52/124 cut-off events. For 708/760 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 484 event pairs, 23 based on Foata normal form. 21/137 useless extension candidates. Maximal degree in co-relation 410. Up to 64 conditions per place. [2021-03-25 05:07:32,509 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 7 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2021-03-25 05:07:32,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 182 flow [2021-03-25 05:07:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:07:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:07:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-03-25 05:07:32,510 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7735537190082644 [2021-03-25 05:07:32,511 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-03-25 05:07:32,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-03-25 05:07:32,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-03-25 05:07:32,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 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 05:07:32,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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 05:07:32,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 121.0) internal successors, (726), 6 states have internal predecessors, (726), 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 05:07:32,514 INFO L185 Difference]: Start difference. First operand has 42 places, 22 transitions, 130 flow. Second operand 5 states and 468 transitions. [2021-03-25 05:07:32,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 182 flow [2021-03-25 05:07:32,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 153 flow, removed 5 selfloop flow, removed 8 redundant places. [2021-03-25 05:07:32,517 INFO L241 Difference]: Finished difference. Result has 41 places, 28 transitions, 155 flow [2021-03-25 05:07:32,517 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2021-03-25 05:07:32,517 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-03-25 05:07:32,517 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,517 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 28 transitions, 155 flow [2021-03-25 05:07:32,517 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 28 transitions, 155 flow [2021-03-25 05:07:32,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 28 transitions, 155 flow [2021-03-25 05:07:32,526 INFO L129 PetriNetUnfolder]: 50/122 cut-off events. [2021-03-25 05:07:32,526 INFO L130 PetriNetUnfolder]: For 294/328 co-relation queries the response was YES. [2021-03-25 05:07:32,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 122 events. 50/122 cut-off events. For 294/328 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 506 event pairs, 23 based on Foata normal form. 2/114 useless extension candidates. Maximal degree in co-relation 414. Up to 67 conditions per place. [2021-03-25 05:07:32,527 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-25 05:07:32,531 INFO L154 LiptonReduction]: Checked pairs total: 128 [2021-03-25 05:07:32,531 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:07:32,531 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 05:07:32,532 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 149 flow [2021-03-25 05:07:32,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 05:07:32,532 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,532 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:07:32,533 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,533 INFO L82 PathProgramCache]: Analyzing trace with hash 565580212, now seen corresponding path program 1 times [2021-03-25 05:07:32,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119978741] [2021-03-25 05:07:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,572 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:07:32,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:07:32,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:32,578 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 05:07:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119978741] [2021-03-25 05:07:32,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:07:32,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568545279] [2021-03-25 05:07:32,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:07:32,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:07:32,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:07:32,580 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-03-25 05:07:32,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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 05:07:32,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-03-25 05:07:32,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,615 INFO L129 PetriNetUnfolder]: 25/77 cut-off events. [2021-03-25 05:07:32,615 INFO L130 PetriNetUnfolder]: For 448/528 co-relation queries the response was YES. [2021-03-25 05:07:32,616 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 77 events. 25/77 cut-off events. For 448/528 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 248 event pairs, 4 based on Foata normal form. 31/105 useless extension candidates. Maximal degree in co-relation 288. Up to 44 conditions per place. [2021-03-25 05:07:32,616 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 5 selfloop transitions, 10 changer transitions 4/35 dead transitions. [2021-03-25 05:07:32,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 233 flow [2021-03-25 05:07:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:07:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:07:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2021-03-25 05:07:32,618 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-03-25 05:07:32,618 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2021-03-25 05:07:32,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2021-03-25 05:07:32,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2021-03-25 05:07:32,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 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 05:07:32,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 05:07:32,621 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 121.0) internal successors, (847), 7 states have internal predecessors, (847), 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 05:07:32,621 INFO L185 Difference]: Start difference. First operand has 41 places, 27 transitions, 149 flow. Second operand 6 states and 561 transitions. [2021-03-25 05:07:32,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 233 flow [2021-03-25 05:07:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 227 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:07:32,624 INFO L241 Difference]: Finished difference. Result has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,625 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2021-03-25 05:07:32,625 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2021-03-25 05:07:32,625 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,625 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,625 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 31 transitions, 211 flow [2021-03-25 05:07:32,630 INFO L129 PetriNetUnfolder]: 21/73 cut-off events. [2021-03-25 05:07:32,630 INFO L130 PetriNetUnfolder]: For 275/317 co-relation queries the response was YES. [2021-03-25 05:07:32,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 73 events. 21/73 cut-off events. For 275/317 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 266 event pairs, 4 based on Foata normal form. 4/74 useless extension candidates. Maximal degree in co-relation 292. Up to 41 conditions per place. [2021-03-25 05:07:32,631 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 05:07:32,634 INFO L154 LiptonReduction]: Checked pairs total: 124 [2021-03-25 05:07:32,634 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:07:32,635 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 05:07:32,636 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 203 flow [2021-03-25 05:07:32,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 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 05:07:32,637 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,637 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:07:32,637 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,638 INFO L82 PathProgramCache]: Analyzing trace with hash 856520491, now seen corresponding path program 1 times [2021-03-25 05:07:32,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889565361] [2021-03-25 05:07:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,706 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-25 05:07:32,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 05:07:32,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:32,718 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 05:07:32,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889565361] [2021-03-25 05:07:32,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:07:32,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882871412] [2021-03-25 05:07:32,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:07:32,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:07:32,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:07:32,720 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 121 [2021-03-25 05:07:32,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 05:07:32,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 121 [2021-03-25 05:07:32,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,760 INFO L129 PetriNetUnfolder]: 11/44 cut-off events. [2021-03-25 05:07:32,760 INFO L130 PetriNetUnfolder]: For 234/266 co-relation queries the response was YES. [2021-03-25 05:07:32,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 44 events. 11/44 cut-off events. For 234/266 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 18/61 useless extension candidates. Maximal degree in co-relation 179. Up to 25 conditions per place. [2021-03-25 05:07:32,760 INFO L132 encePairwiseOnDemand]: 115/121 looper letters, 2 selfloop transitions, 11 changer transitions 3/32 dead transitions. [2021-03-25 05:07:32,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 32 transitions, 247 flow [2021-03-25 05:07:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:07:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:07:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2021-03-25 05:07:32,762 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7650531286894924 [2021-03-25 05:07:32,762 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2021-03-25 05:07:32,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2021-03-25 05:07:32,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2021-03-25 05:07:32,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 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 05:07:32,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 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 05:07:32,765 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 121.0) internal successors, (968), 8 states have internal predecessors, (968), 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 05:07:32,765 INFO L185 Difference]: Start difference. First operand has 45 places, 30 transitions, 203 flow. Second operand 7 states and 648 transitions. [2021-03-25 05:07:32,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 32 transitions, 247 flow [2021-03-25 05:07:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 221 flow, removed 11 selfloop flow, removed 3 redundant places. [2021-03-25 05:07:32,766 INFO L241 Difference]: Finished difference. Result has 49 places, 29 transitions, 201 flow [2021-03-25 05:07:32,767 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=201, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2021-03-25 05:07:32,767 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2021-03-25 05:07:32,767 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,767 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 29 transitions, 201 flow [2021-03-25 05:07:32,767 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 29 transitions, 201 flow [2021-03-25 05:07:32,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 29 transitions, 201 flow [2021-03-25 05:07:32,770 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-03-25 05:07:32,770 INFO L130 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2021-03-25 05:07:32,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 41 events. 9/41 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 2/42 useless extension candidates. Maximal degree in co-relation 151. Up to 15 conditions per place. [2021-03-25 05:07:32,771 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-25 05:07:32,876 INFO L154 LiptonReduction]: Checked pairs total: 150 [2021-03-25 05:07:32,876 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:07:32,876 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 109 [2021-03-25 05:07:32,877 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 187 flow [2021-03-25 05:07:32,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 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 05:07:32,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:32,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:32,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:07:32,877 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2047962731, now seen corresponding path program 1 times [2021-03-25 05:07:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:32,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124194517] [2021-03-25 05:07:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:32,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:32,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:32,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:32,924 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:07:32,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:07:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:07:32,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124194517] [2021-03-25 05:07:32,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:32,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:07:32,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506134175] [2021-03-25 05:07:32,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:07:32,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:32,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:07:32,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:07:32,930 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 123 [2021-03-25 05:07:32,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 05:07:32,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:32,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 123 [2021-03-25 05:07:32,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:32,954 INFO L129 PetriNetUnfolder]: 14/49 cut-off events. [2021-03-25 05:07:32,955 INFO L130 PetriNetUnfolder]: For 345/367 co-relation queries the response was YES. [2021-03-25 05:07:32,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 49 events. 14/49 cut-off events. For 345/367 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 122 event pairs, 0 based on Foata normal form. 10/57 useless extension candidates. Maximal degree in co-relation 195. Up to 19 conditions per place. [2021-03-25 05:07:32,955 INFO L132 encePairwiseOnDemand]: 120/123 looper letters, 3 selfloop transitions, 1 changer transitions 5/27 dead transitions. [2021-03-25 05:07:32,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 27 transitions, 205 flow [2021-03-25 05:07:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:07:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:07:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2021-03-25 05:07:32,956 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7682926829268293 [2021-03-25 05:07:32,957 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2021-03-25 05:07:32,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2021-03-25 05:07:32,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:32,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2021-03-25 05:07:32,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 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 05:07:32,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 05:07:32,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 05:07:32,958 INFO L185 Difference]: Start difference. First operand has 45 places, 26 transitions, 187 flow. Second operand 4 states and 378 transitions. [2021-03-25 05:07:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 27 transitions, 205 flow [2021-03-25 05:07:32,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 27 transitions, 157 flow, removed 15 selfloop flow, removed 8 redundant places. [2021-03-25 05:07:32,960 INFO L241 Difference]: Finished difference. Result has 42 places, 22 transitions, 127 flow [2021-03-25 05:07:32,960 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2021-03-25 05:07:32,960 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2021-03-25 05:07:32,960 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:32,960 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 22 transitions, 127 flow [2021-03-25 05:07:32,961 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 22 transitions, 127 flow [2021-03-25 05:07:32,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 22 transitions, 127 flow [2021-03-25 05:07:32,963 INFO L129 PetriNetUnfolder]: 6/30 cut-off events. [2021-03-25 05:07:32,963 INFO L130 PetriNetUnfolder]: For 98/106 co-relation queries the response was YES. [2021-03-25 05:07:32,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 30 events. 6/30 cut-off events. For 98/106 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 84. Up to 10 conditions per place. [2021-03-25 05:07:32,964 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 05:07:33,118 INFO L154 LiptonReduction]: Checked pairs total: 101 [2021-03-25 05:07:33,118 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 05:07:33,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 158 [2021-03-25 05:07:33,119 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 147 flow [2021-03-25 05:07:33,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 05:07:33,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:07:33,120 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:07:33,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:07:33,120 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:07:33,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:07:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1222338632, now seen corresponding path program 1 times [2021-03-25 05:07:33,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:07:33,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073772037] [2021-03-25 05:07:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:07:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:07:33,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:33,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:07:33,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:33,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:33,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:07:33,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:07:33,147 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 05:07:33,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073772037] [2021-03-25 05:07:33,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:07:33,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:07:33,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919194439] [2021-03-25 05:07:33,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:07:33,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:07:33,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:07:33,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:07:33,149 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 129 [2021-03-25 05:07:33,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 05:07:33,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:07:33,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 129 [2021-03-25 05:07:33,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:07:33,166 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-03-25 05:07:33,166 INFO L130 PetriNetUnfolder]: For 121/129 co-relation queries the response was YES. [2021-03-25 05:07:33,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 28 events. 5/28 cut-off events. For 121/129 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 105. Up to 11 conditions per place. [2021-03-25 05:07:33,167 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-25 05:07:33,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 19 transitions, 141 flow [2021-03-25 05:07:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:07:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:07:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 403 transitions. [2021-03-25 05:07:33,168 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7810077519379846 [2021-03-25 05:07:33,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 403 transitions. [2021-03-25 05:07:33,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 403 transitions. [2021-03-25 05:07:33,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:07:33,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 403 transitions. [2021-03-25 05:07:33,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.75) internal successors, (403), 4 states have internal predecessors, (403), 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 05:07:33,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 05:07:33,170 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 05:07:33,170 INFO L185 Difference]: Start difference. First operand has 38 places, 20 transitions, 147 flow. Second operand 4 states and 403 transitions. [2021-03-25 05:07:33,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 19 transitions, 141 flow [2021-03-25 05:07:33,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 19 transitions, 91 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-03-25 05:07:33,171 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-03-25 05:07:33,171 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-03-25 05:07:33,171 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2021-03-25 05:07:33,172 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:07:33,172 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:07:33,172 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 0 transitions, 0 flow [2021-03-25 05:07:33,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:07:33,172 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:07:33,172 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:07:33,172 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 05:07:33,172 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:07:33,173 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:07:33,173 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:07:33,173 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:07:33,173 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:07:33,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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 05:07:33,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:07:33,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:07:33 BasicIcfg [2021-03-25 05:07:33,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:07:33,177 INFO L168 Benchmark]: Toolchain (without parser) took 4441.67 ms. Allocated memory was 394.3 MB in the beginning and 476.1 MB in the end (delta: 81.8 MB). Free memory was 357.5 MB in the beginning and 424.1 MB in the end (delta: -66.6 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:07:33,177 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 394.3 MB. Free memory was 375.4 MB in the beginning and 375.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:07:33,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.80 ms. Allocated memory is still 394.3 MB. Free memory was 357.3 MB in the beginning and 355.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-25 05:07:33,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.21 ms. Allocated memory is still 394.3 MB. Free memory was 355.2 MB in the beginning and 354.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:07:33,178 INFO L168 Benchmark]: Boogie Preprocessor took 30.56 ms. Allocated memory is still 394.3 MB. Free memory was 354.1 MB in the beginning and 352.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:07:33,178 INFO L168 Benchmark]: RCFGBuilder took 388.84 ms. Allocated memory is still 394.3 MB. Free memory was 352.0 MB in the beginning and 327.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:07:33,178 INFO L168 Benchmark]: TraceAbstraction took 3518.10 ms. Allocated memory was 394.3 MB in the beginning and 476.1 MB in the end (delta: 81.8 MB). Free memory was 327.9 MB in the beginning and 424.1 MB in the end (delta: -96.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:07:33,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 394.3 MB. Free memory was 375.4 MB in the beginning and 375.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 443.80 ms. Allocated memory is still 394.3 MB. Free memory was 357.3 MB in the beginning and 355.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.21 ms. Allocated memory is still 394.3 MB. Free memory was 355.2 MB in the beginning and 354.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.56 ms. Allocated memory is still 394.3 MB. Free memory was 354.1 MB in the beginning and 352.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 388.84 ms. Allocated memory is still 394.3 MB. Free memory was 352.0 MB in the beginning and 327.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3518.10 ms. Allocated memory was 394.3 MB in the beginning and 476.1 MB in the end (delta: 81.8 MB). Free memory was 327.9 MB in the beginning and 424.1 MB in the end (delta: -96.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1352.9ms, 70 PlacesBefore, 30 PlacesAfterwards, 61 TransitionsBefore, 20 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 43 TotalNumberOfCompositions, 1248 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 755, positive: 711, positive conditional: 0, positive unconditional: 711, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 755, positive: 287, positive conditional: 0, positive unconditional: 287, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 576.1ms, 34 PlacesBefore, 30 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 342 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 93, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 93, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.1ms, 43 PlacesBefore, 39 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 175 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 42, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 11, negative conditional: 0, negative unconditional: 11, 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: 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] , Cache Queries: [ total: 42, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.1ms, 42 PlacesBefore, 40 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 167 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 72, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 72, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 54, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8ms, 44 PlacesBefore, 42 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8ms, 41 PlacesBefore, 41 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 73, positive conditional: 0, positive unconditional: 73, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.4ms, 45 PlacesBefore, 45 PlacesAfterwards, 31 TransitionsBefore, 30 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 124 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 79, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 79, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 109.0ms, 49 PlacesBefore, 45 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 150 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 15, negative conditional: 0, negative unconditional: 15, 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: 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] , Cache Queries: [ total: 73, positive: 55, positive conditional: 0, positive unconditional: 55, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 157.7ms, 42 PlacesBefore, 38 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 4 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 101 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 83, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 83, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 31 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: 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] , 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): 13, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 18]: 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 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3440.2ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 443.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1435.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 51 SDslu, 53 SDs, 0 SdLazy, 148 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 150.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=6, InterpolantAutomatonStates: 51, 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: 17.7ms SsaConstructionTime, 134.7ms SatisfiabilityAnalysisTime, 372.7ms InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...