/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 04:59:08,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 04:59:08,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 04:59:08,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 04:59:08,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 04:59:08,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 04:59:08,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 04:59:08,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 04:59:08,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 04:59:08,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 04:59:08,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 04:59:08,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 04:59:08,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 04:59:08,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 04:59:08,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 04:59:08,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 04:59:08,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 04:59:08,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 04:59:08,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 04:59:08,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 04:59:08,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 04:59:08,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 04:59:08,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 04:59:08,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 04:59:08,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 04:59:08,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 04:59:08,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 04:59:08,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 04:59:08,943 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 04:59:08,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 04:59:08,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 04:59:08,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 04:59:08,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 04:59:08,979 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 04:59:08,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 04:59:08,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 04:59:08,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 04:59:08,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 04:59:08,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 04:59:08,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 04:59:08,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 04:59:08,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 04:59:08,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 04:59:08,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 04:59:08,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 04:59:08,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 04:59:08,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 04:59:08,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 04:59:08,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 04:59:08,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 04:59:08,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 04:59:08,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 04:59:08,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 04:59:08,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 04:59:08,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 04:59:09,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 04:59:09,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 04:59:09,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 04:59:09,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 04:59:09,283 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 04:59:09,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-03-25 04:59:09,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f317b13/2f446f3630c345bf809e8fa86b99dbcf/FLAG9c3b57ba7 [2021-03-25 04:59:09,894 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 04:59:09,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-03-25 04:59:09,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f317b13/2f446f3630c345bf809e8fa86b99dbcf/FLAG9c3b57ba7 [2021-03-25 04:59:10,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5f317b13/2f446f3630c345bf809e8fa86b99dbcf [2021-03-25 04:59:10,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 04:59:10,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 04:59:10,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:10,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 04:59:10,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 04:59:10,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5394a6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10, skipping insertion in model container [2021-03-25 04:59:10,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 04:59:10,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 04:59:10,522 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i[950,963] [2021-03-25 04:59:10,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:10,737 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 04:59:10,749 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/safe004_tso.oepc.i[950,963] [2021-03-25 04:59:10,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 04:59:10,842 INFO L208 MainTranslator]: Completed translation [2021-03-25 04:59:10,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10 WrapperNode [2021-03-25 04:59:10,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 04:59:10,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:10,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 04:59:10,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 04:59:10,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 04:59:10,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 04:59:10,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 04:59:10,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 04:59:10,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (1/1) ... [2021-03-25 04:59:10,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 04:59:10,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 04:59:10,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 04:59:10,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 04:59:10,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (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 04:59:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 04:59:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 04:59:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 04:59:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 04:59:10,976 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 04:59:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 04:59:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 04:59:10,977 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 04:59:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 04:59:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 04:59:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 04:59:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 04:59:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 04:59:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 04:59:10,980 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 04:59:11,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 04:59:11,244 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 04:59:11,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:11 BoogieIcfgContainer [2021-03-25 04:59:11,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 04:59:11,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 04:59:11,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 04:59:11,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 04:59:11,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 04:59:10" (1/3) ... [2021-03-25 04:59:11,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27344ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:11, skipping insertion in model container [2021-03-25 04:59:11,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 04:59:10" (2/3) ... [2021-03-25 04:59:11,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27344ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 04:59:11, skipping insertion in model container [2021-03-25 04:59:11,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 04:59:11" (3/3) ... [2021-03-25 04:59:11,252 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2021-03-25 04:59:11,256 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 04:59:11,259 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 04:59:11,260 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 04:59:11,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,310 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,311 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,312 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,312 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,313 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,313 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,313 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,314 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,315 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,315 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,322 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,322 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,324 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,324 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 04:59:11,326 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 04:59:11,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 04:59:11,371 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 04:59:11,371 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 04:59:11,371 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 04:59:11,371 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 04:59:11,371 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 04:59:11,372 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 04:59:11,372 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 04:59:11,372 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 04:59:11,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 04:59:11,440 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 04:59:11,441 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:11,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 04:59:11,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 04:59:11,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 04:59:11,459 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:11,465 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 04:59:11,470 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 04:59:11,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 04:59:11,489 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 04:59:11,489 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:11,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 04:59:11,492 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 04:59:12,709 INFO L154 LiptonReduction]: Checked pairs total: 996 [2021-03-25 04:59:12,709 INFO L156 LiptonReduction]: Total number of compositions: 37 [2021-03-25 04:59:12,711 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1253 [2021-03-25 04:59:12,718 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-25 04:59:12,718 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:12,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:12,719 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:12,719 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1399899973, now seen corresponding path program 1 times [2021-03-25 04:59:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:12,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228051208] [2021-03-25 04:59:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:12,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:12,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:12,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:12,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:12,973 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:59:12,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:59:12,983 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 04:59:12,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228051208] [2021-03-25 04:59:12,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:12,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:12,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324026654] [2021-03-25 04:59:12,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:12,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:13,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:13,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:13,004 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 111 [2021-03-25 04:59:13,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 04:59:13,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:13,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 111 [2021-03-25 04:59:13,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:13,048 INFO L129 PetriNetUnfolder]: 66/164 cut-off events. [2021-03-25 04:59:13,049 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:13,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 164 events. 66/164 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 613 event pairs, 8 based on Foata normal form. 11/166 useless extension candidates. Maximal degree in co-relation 288. Up to 77 conditions per place. [2021-03-25 04:59:13,051 INFO L132 encePairwiseOnDemand]: 103/111 looper letters, 11 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2021-03-25 04:59:13,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 107 flow [2021-03-25 04:59:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 364 transitions. [2021-03-25 04:59:13,063 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8198198198198198 [2021-03-25 04:59:13,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 364 transitions. [2021-03-25 04:59:13,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 364 transitions. [2021-03-25 04:59:13,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:13,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 364 transitions. [2021-03-25 04:59:13,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 04:59:13,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 04:59:13,075 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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 04:59:13,077 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 364 transitions. [2021-03-25 04:59:13,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 107 flow [2021-03-25 04:59:13,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 04:59:13,081 INFO L241 Difference]: Finished difference. Result has 35 places, 27 transitions, 102 flow [2021-03-25 04:59:13,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2021-03-25 04:59:13,083 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-25 04:59:13,083 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:13,083 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 27 transitions, 102 flow [2021-03-25 04:59:13,084 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 27 transitions, 102 flow [2021-03-25 04:59:13,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 27 transitions, 102 flow [2021-03-25 04:59:13,098 INFO L129 PetriNetUnfolder]: 62/163 cut-off events. [2021-03-25 04:59:13,098 INFO L130 PetriNetUnfolder]: For 44/60 co-relation queries the response was YES. [2021-03-25 04:59:13,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 163 events. 62/163 cut-off events. For 44/60 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 695 event pairs, 14 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 350. Up to 75 conditions per place. [2021-03-25 04:59:13,100 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 04:59:13,526 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 04:59:13,774 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-25 04:59:13,854 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-25 04:59:13,855 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 04:59:13,855 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 772 [2021-03-25 04:59:13,856 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 92 flow [2021-03-25 04:59:13,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 04:59:13,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:13,857 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:13,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 04:59:13,857 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:13,858 INFO L82 PathProgramCache]: Analyzing trace with hash -647300483, now seen corresponding path program 1 times [2021-03-25 04:59:13,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:13,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410970210] [2021-03-25 04:59:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:13,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:13,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:13,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:13,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:13,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:13,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:13,911 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 04:59:13,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410970210] [2021-03-25 04:59:13,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:13,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:13,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583960818] [2021-03-25 04:59:13,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:13,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:13,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:13,915 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2021-03-25 04:59:13,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:59:13,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:13,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2021-03-25 04:59:13,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:13,964 INFO L129 PetriNetUnfolder]: 59/166 cut-off events. [2021-03-25 04:59:13,965 INFO L130 PetriNetUnfolder]: For 115/150 co-relation queries the response was YES. [2021-03-25 04:59:13,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 166 events. 59/166 cut-off events. For 115/150 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 775 event pairs, 11 based on Foata normal form. 12/170 useless extension candidates. Maximal degree in co-relation 447. Up to 87 conditions per place. [2021-03-25 04:59:13,967 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 6 selfloop transitions, 4 changer transitions 11/34 dead transitions. [2021-03-25 04:59:13,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 196 flow [2021-03-25 04:59:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2021-03-25 04:59:13,973 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8426724137931034 [2021-03-25 04:59:13,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2021-03-25 04:59:13,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2021-03-25 04:59:13,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:13,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2021-03-25 04:59:13,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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 04:59:13,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 04:59:13,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 04:59:13,978 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 92 flow. Second operand 4 states and 391 transitions. [2021-03-25 04:59:13,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 196 flow [2021-03-25 04:59:13,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 04:59:13,982 INFO L241 Difference]: Finished difference. Result has 34 places, 23 transitions, 118 flow [2021-03-25 04:59:13,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2021-03-25 04:59:13,983 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2021-03-25 04:59:13,983 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:13,983 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 23 transitions, 118 flow [2021-03-25 04:59:13,984 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 23 transitions, 118 flow [2021-03-25 04:59:13,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 23 transitions, 118 flow [2021-03-25 04:59:13,997 INFO L129 PetriNetUnfolder]: 33/102 cut-off events. [2021-03-25 04:59:13,997 INFO L130 PetriNetUnfolder]: For 70/72 co-relation queries the response was YES. [2021-03-25 04:59:13,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 102 events. 33/102 cut-off events. For 70/72 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 392 event pairs, 9 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 256. Up to 55 conditions per place. [2021-03-25 04:59:13,998 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 04:59:14,001 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-25 04:59:14,001 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:14,001 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 04:59:14,002 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 118 flow [2021-03-25 04:59:14,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 04:59:14,003 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:14,003 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:14,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 04:59:14,003 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash -428095009, now seen corresponding path program 1 times [2021-03-25 04:59:14,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:14,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026360221] [2021-03-25 04:59:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:14,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:14,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,046 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:59:14,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:59:14,056 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 04:59:14,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026360221] [2021-03-25 04:59:14,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:14,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:59:14,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919084835] [2021-03-25 04:59:14,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:59:14,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:14,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:59:14,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:59:14,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-25 04:59:14,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 118 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 04:59:14,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:14,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-25 04:59:14,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:14,134 INFO L129 PetriNetUnfolder]: 26/96 cut-off events. [2021-03-25 04:59:14,134 INFO L130 PetriNetUnfolder]: For 97/125 co-relation queries the response was YES. [2021-03-25 04:59:14,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 96 events. 26/96 cut-off events. For 97/125 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 361 event pairs, 0 based on Foata normal form. 5/100 useless extension candidates. Maximal degree in co-relation 301. Up to 47 conditions per place. [2021-03-25 04:59:14,135 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 5 selfloop transitions, 6 changer transitions 19/39 dead transitions. [2021-03-25 04:59:14,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 262 flow [2021-03-25 04:59:14,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 04:59:14,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 04:59:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2021-03-25 04:59:14,137 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7906403940886699 [2021-03-25 04:59:14,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2021-03-25 04:59:14,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2021-03-25 04:59:14,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:14,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2021-03-25 04:59:14,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 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 04:59:14,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 04:59:14,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 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 04:59:14,141 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 118 flow. Second operand 7 states and 642 transitions. [2021-03-25 04:59:14,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 262 flow [2021-03-25 04:59:14,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 248 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:14,144 INFO L241 Difference]: Finished difference. Result has 41 places, 19 transitions, 107 flow [2021-03-25 04:59:14,144 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=107, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2021-03-25 04:59:14,144 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2021-03-25 04:59:14,144 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:14,144 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 19 transitions, 107 flow [2021-03-25 04:59:14,145 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 19 transitions, 107 flow [2021-03-25 04:59:14,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 19 transitions, 107 flow [2021-03-25 04:59:14,148 INFO L129 PetriNetUnfolder]: 4/33 cut-off events. [2021-03-25 04:59:14,148 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2021-03-25 04:59:14,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 33 events. 4/33 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 91. Up to 12 conditions per place. [2021-03-25 04:59:14,149 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 04:59:14,174 INFO L154 LiptonReduction]: Checked pairs total: 72 [2021-03-25 04:59:14,174 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:59:14,174 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 04:59:14,175 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions, 103 flow [2021-03-25 04:59:14,176 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 04:59:14,176 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:14,176 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:14,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 04:59:14,176 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:14,177 INFO L82 PathProgramCache]: Analyzing trace with hash -240187279, now seen corresponding path program 1 times [2021-03-25 04:59:14,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:14,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345641412] [2021-03-25 04:59:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:14,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,241 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 04:59:14,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 04:59:14,258 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 04:59:14,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345641412] [2021-03-25 04:59:14,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:14,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:59:14,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732942501] [2021-03-25 04:59:14,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:14,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:14,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:14,262 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 117 [2021-03-25 04:59:14,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 04:59:14,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:14,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 117 [2021-03-25 04:59:14,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:14,277 INFO L129 PetriNetUnfolder]: 2/25 cut-off events. [2021-03-25 04:59:14,277 INFO L130 PetriNetUnfolder]: For 51/54 co-relation queries the response was YES. [2021-03-25 04:59:14,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 25 events. 2/25 cut-off events. For 51/54 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 79. Up to 8 conditions per place. [2021-03-25 04:59:14,278 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 3 selfloop transitions, 4 changer transitions 4/20 dead transitions. [2021-03-25 04:59:14,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 20 transitions, 146 flow [2021-03-25 04:59:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:14,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 363 transitions. [2021-03-25 04:59:14,279 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7756410256410257 [2021-03-25 04:59:14,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 363 transitions. [2021-03-25 04:59:14,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 363 transitions. [2021-03-25 04:59:14,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:14,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 363 transitions. [2021-03-25 04:59:14,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 04:59:14,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 04:59:14,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 04:59:14,282 INFO L185 Difference]: Start difference. First operand has 38 places, 18 transitions, 103 flow. Second operand 4 states and 363 transitions. [2021-03-25 04:59:14,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 20 transitions, 146 flow [2021-03-25 04:59:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 20 transitions, 120 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-25 04:59:14,286 INFO L241 Difference]: Finished difference. Result has 37 places, 16 transitions, 80 flow [2021-03-25 04:59:14,286 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=37, PETRI_TRANSITIONS=16} [2021-03-25 04:59:14,286 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2021-03-25 04:59:14,286 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:14,286 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 16 transitions, 80 flow [2021-03-25 04:59:14,287 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 16 transitions, 80 flow [2021-03-25 04:59:14,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 16 transitions, 80 flow [2021-03-25 04:59:14,289 INFO L129 PetriNetUnfolder]: 0/18 cut-off events. [2021-03-25 04:59:14,289 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 04:59:14,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 18 events. 0/18 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 04:59:14,290 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 04:59:14,339 INFO L154 LiptonReduction]: Checked pairs total: 42 [2021-03-25 04:59:14,339 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:59:14,340 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 54 [2021-03-25 04:59:14,343 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 14 transitions, 76 flow [2021-03-25 04:59:14,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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 04:59:14,344 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:14,344 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:14,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 04:59:14,344 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 557686815, now seen corresponding path program 1 times [2021-03-25 04:59:14,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:14,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143648883] [2021-03-25 04:59:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:14,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:14,406 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 04:59:14,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143648883] [2021-03-25 04:59:14,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:14,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 04:59:14,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187109492] [2021-03-25 04:59:14,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 04:59:14,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:14,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 04:59:14,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 04:59:14,416 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 119 [2021-03-25 04:59:14,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 14 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 04:59:14,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:14,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 119 [2021-03-25 04:59:14,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:14,433 INFO L129 PetriNetUnfolder]: 16/45 cut-off events. [2021-03-25 04:59:14,433 INFO L130 PetriNetUnfolder]: For 69/70 co-relation queries the response was YES. [2021-03-25 04:59:14,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 45 events. 16/45 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 118 event pairs, 7 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 152. Up to 34 conditions per place. [2021-03-25 04:59:14,434 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 4 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2021-03-25 04:59:14,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 17 transitions, 106 flow [2021-03-25 04:59:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 04:59:14,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 04:59:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2021-03-25 04:59:14,435 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-03-25 04:59:14,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2021-03-25 04:59:14,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2021-03-25 04:59:14,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:14,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2021-03-25 04:59:14,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 04:59:14,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 04:59:14,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 04:59:14,438 INFO L185 Difference]: Start difference. First operand has 35 places, 14 transitions, 76 flow. Second operand 3 states and 306 transitions. [2021-03-25 04:59:14,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 17 transitions, 106 flow [2021-03-25 04:59:14,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 74 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-03-25 04:59:14,439 INFO L241 Difference]: Finished difference. Result has 29 places, 16 transitions, 70 flow [2021-03-25 04:59:14,439 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2021-03-25 04:59:14,439 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2021-03-25 04:59:14,439 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:14,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 04:59:14,440 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 16 transitions, 70 flow [2021-03-25 04:59:14,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 16 transitions, 70 flow [2021-03-25 04:59:14,444 INFO L129 PetriNetUnfolder]: 12/38 cut-off events. [2021-03-25 04:59:14,444 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2021-03-25 04:59:14,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 38 events. 12/38 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 91 event pairs, 7 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 95. Up to 28 conditions per place. [2021-03-25 04:59:14,445 INFO L142 LiptonReduction]: Number of co-enabled transitions 26 [2021-03-25 04:59:14,488 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-25 04:59:14,488 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 04:59:14,489 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-25 04:59:14,492 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 71 flow [2021-03-25 04:59:14,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 04:59:14,493 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:14,493 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:14,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 04:59:14,493 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:14,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:14,494 INFO L82 PathProgramCache]: Analyzing trace with hash -288870483, now seen corresponding path program 1 times [2021-03-25 04:59:14,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:14,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594648689] [2021-03-25 04:59:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:14,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,567 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 04:59:14,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:59:14,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:14,571 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 04:59:14,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594648689] [2021-03-25 04:59:14,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:14,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 04:59:14,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882093563] [2021-03-25 04:59:14,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 04:59:14,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:14,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 04:59:14,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 04:59:14,573 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2021-03-25 04:59:14,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 04:59:14,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:14,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2021-03-25 04:59:14,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:14,590 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-25 04:59:14,591 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 04:59:14,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 29 events. 6/29 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 1 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 87. Up to 18 conditions per place. [2021-03-25 04:59:14,591 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 2 selfloop transitions, 5 changer transitions 3/19 dead transitions. [2021-03-25 04:59:14,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 106 flow [2021-03-25 04:59:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 04:59:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 04:59:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2021-03-25 04:59:14,593 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2021-03-25 04:59:14,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2021-03-25 04:59:14,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2021-03-25 04:59:14,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:14,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2021-03-25 04:59:14,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 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 04:59:14,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 04:59:14,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 04:59:14,595 INFO L185 Difference]: Start difference. First operand has 29 places, 16 transitions, 71 flow. Second operand 4 states and 407 transitions. [2021-03-25 04:59:14,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 106 flow [2021-03-25 04:59:14,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 99 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 04:59:14,596 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 82 flow [2021-03-25 04:59:14,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2021-03-25 04:59:14,597 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2021-03-25 04:59:14,597 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:14,597 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 16 transitions, 82 flow [2021-03-25 04:59:14,597 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 16 transitions, 82 flow [2021-03-25 04:59:14,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 16 transitions, 82 flow [2021-03-25 04:59:14,599 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 04:59:14,599 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-03-25 04:59:14,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 21 events. 2/21 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 1 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 04:59:14,600 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-25 04:59:14,708 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 04:59:14,709 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 04:59:14,709 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-25 04:59:14,709 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 83 flow [2021-03-25 04:59:14,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 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 04:59:14,710 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 04:59:14,710 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 04:59:14,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 04:59:14,710 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 04:59:14,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 04:59:14,710 INFO L82 PathProgramCache]: Analyzing trace with hash 701680203, now seen corresponding path program 1 times [2021-03-25 04:59:14,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 04:59:14,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808106933] [2021-03-25 04:59:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 04:59:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 04:59:14,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 04:59:14,746 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-25 04:59:14,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 04:59:14,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 04:59:14,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 04:59:14,751 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 04:59:14,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808106933] [2021-03-25 04:59:14,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 04:59:14,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 04:59:14,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584835046] [2021-03-25 04:59:14,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 04:59:14,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 04:59:14,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 04:59:14,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 04:59:14,753 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 122 [2021-03-25 04:59:14,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 15 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 04:59:14,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 04:59:14,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 122 [2021-03-25 04:59:14,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 04:59:14,769 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-03-25 04:59:14,769 INFO L130 PetriNetUnfolder]: For 32/36 co-relation queries the response was YES. [2021-03-25 04:59:14,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 17 events. 1/17 cut-off events. For 32/36 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 0 based on Foata normal form. 4/20 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-03-25 04:59:14,769 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-25 04:59:14,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 87 flow [2021-03-25 04:59:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 04:59:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 04:59:14,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2021-03-25 04:59:14,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8229508196721311 [2021-03-25 04:59:14,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2021-03-25 04:59:14,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2021-03-25 04:59:14,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 04:59:14,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2021-03-25 04:59:14,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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 04:59:14,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 04:59:14,774 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 04:59:14,774 INFO L185 Difference]: Start difference. First operand has 30 places, 15 transitions, 83 flow. Second operand 5 states and 502 transitions. [2021-03-25 04:59:14,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 87 flow [2021-03-25 04:59:14,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 14 transitions, 73 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-25 04:59:14,775 INFO L241 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2021-03-25 04:59:14,775 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2021-03-25 04:59:14,775 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2021-03-25 04:59:14,776 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 04:59:14,776 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 04:59:14,776 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 04:59:14,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:14,776 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 04:59:14,776 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 04:59:14,776 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 04:59:14,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 04:59:14,777 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 04:59:14,777 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 04:59:14,777 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 04:59:14,777 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 04:59:14,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 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 04:59:14,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 04:59:14,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 04:59:14 BasicIcfg [2021-03-25 04:59:14,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 04:59:14,782 INFO L168 Benchmark]: Toolchain (without parser) took 4441.60 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 316.7 MB in the beginning and 207.9 MB in the end (delta: 108.8 MB). Peak memory consumption was 181.7 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:14,782 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 354.4 MB. Free memory was 335.4 MB in the beginning and 335.3 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:14,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.27 ms. Allocated memory is still 354.4 MB. Free memory was 316.5 MB in the beginning and 316.8 MB in the end (delta: -253.3 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:14,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:14,783 INFO L168 Benchmark]: Boogie Preprocessor took 17.20 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 313.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 04:59:14,783 INFO L168 Benchmark]: RCFGBuilder took 333.00 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 290.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:14,784 INFO L168 Benchmark]: TraceAbstraction took 3533.98 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.6 MB in the beginning and 207.9 MB in the end (delta: 82.7 MB). Peak memory consumption was 157.2 MB. Max. memory is 16.0 GB. [2021-03-25 04:59:14,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 354.4 MB. Free memory was 335.4 MB in the beginning and 335.3 MB in the end (delta: 125.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 503.27 ms. Allocated memory is still 354.4 MB. Free memory was 316.5 MB in the beginning and 316.8 MB in the end (delta: -253.3 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.99 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 17.20 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 313.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 333.00 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 290.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3533.98 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 290.6 MB in the beginning and 207.9 MB in the end (delta: 82.7 MB). Peak memory consumption was 157.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1238.6ms, 68 PlacesBefore, 32 PlacesAfterwards, 59 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 37 TotalNumberOfCompositions, 996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 491, positive: 458, positive conditional: 0, positive unconditional: 458, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 382, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 382, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 491, positive: 93, positive conditional: 0, positive unconditional: 93, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 382, unknown conditional: 0, unknown unconditional: 382] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 771.1ms, 35 PlacesBefore, 30 PlacesAfterwards, 27 TransitionsBefore, 22 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, 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: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.3ms, 34 PlacesBefore, 34 PlacesAfterwards, 23 TransitionsBefore, 23 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 8, positive conditional: 0, positive unconditional: 8, 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: 11, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.6ms, 41 PlacesBefore, 38 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 72 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 15, positive conditional: 0, positive unconditional: 15, 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: 3, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 52.7ms, 37 PlacesBefore, 35 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 42 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 48.9ms, 29 PlacesBefore, 29 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 26 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 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: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 111.5ms, 31 PlacesBefore, 30 PlacesAfterwards, 16 TransitionsBefore, 15 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: 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] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 30 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): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3411.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 337.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1342.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 28 SDslu, 23 SDs, 0 SdLazy, 83 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=2, InterpolantAutomatonStates: 31, 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: 18.5ms SsaConstructionTime, 131.3ms SatisfiabilityAnalysisTime, 383.8ms InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...