/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-6f4246e9f5583d222ebb38ff8175c901f3a528f0-6f4246e [2021-04-29 00:49:26,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-29 00:49:26,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-29 00:49:26,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-29 00:49:26,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-29 00:49:26,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-29 00:49:26,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-29 00:49:26,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-29 00:49:26,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-29 00:49:26,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-29 00:49:26,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-29 00:49:26,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-29 00:49:26,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-29 00:49:26,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-29 00:49:26,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-29 00:49:26,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-29 00:49:26,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-29 00:49:26,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-29 00:49:26,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-29 00:49:26,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-29 00:49:26,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithPredicates.epf [2021-04-29 00:49:26,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-29 00:49:26,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-29 00:49:26,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-29 00:49:26,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-29 00:49:26,963 INFO L138 SettingsManager]: * Use SBE=true [2021-04-29 00:49:26,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-29 00:49:26,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-29 00:49:26,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-29 00:49:26,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-29 00:49:26,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-29 00:49:26,965 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-29 00:49:26,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-29 00:49:26,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-29 00:49:26,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-29 00:49:26,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-29 00:49:26,966 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-29 00:49:26,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-29 00:49:26,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-29 00:49:26,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-29 00:49:26,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-29 00:49:26,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-29 00:49:26,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:49:26,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-29 00:49:26,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-29 00:49:26,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-29 00:49:26,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-29 00:49:26,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-29 00:49:26,969 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-04-29 00:49:26,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-04-29 00:49:26,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-04-29 00:49:26,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-29 00:49:27,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-29 00:49:27,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-29 00:49:27,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-29 00:49:27,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-29 00:49:27,371 INFO L275 PluginConnector]: CDTParser initialized [2021-04-29 00:49:27,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2021-04-29 00:49:27,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3ea51e4/bffa89e15dbf4d0ea1ee3ddd15ba3411/FLAG70cf325d8 [2021-04-29 00:49:28,207 INFO L306 CDTParser]: Found 1 translation units. [2021-04-29 00:49:28,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_tso.opt.i [2021-04-29 00:49:28,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3ea51e4/bffa89e15dbf4d0ea1ee3ddd15ba3411/FLAG70cf325d8 [2021-04-29 00:49:28,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3ea51e4/bffa89e15dbf4d0ea1ee3ddd15ba3411 [2021-04-29 00:49:28,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-29 00:49:28,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-29 00:49:28,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-29 00:49:28,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-29 00:49:28,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-29 00:49:28,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:49:28" (1/1) ... [2021-04-29 00:49:28,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcee90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:28, skipping insertion in model container [2021-04-29 00:49:28,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 12:49:28" (1/1) ... [2021-04-29 00:49:28,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-29 00:49:28,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-29 00:49:28,799 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/safe037_tso.opt.i[949,962] [2021-04-29 00:49:28,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:49:28,990 INFO L203 MainTranslator]: Completed pre-run [2021-04-29 00:49:29,005 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/safe037_tso.opt.i[949,962] [2021-04-29 00:49:29,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-29 00:49:29,210 INFO L208 MainTranslator]: Completed translation [2021-04-29 00:49:29,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29 WrapperNode [2021-04-29 00:49:29,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-29 00:49:29,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-29 00:49:29,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-29 00:49:29,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-29 00:49:29,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-29 00:49:29,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-29 00:49:29,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-29 00:49:29,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-29 00:49:29,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... [2021-04-29 00:49:29,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-29 00:49:29,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-29 00:49:29,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-29 00:49:29,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-29 00:49:29,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-29 00:49:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-29 00:49:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-29 00:49:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-29 00:49:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-29 00:49:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-29 00:49:29,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-29 00:49:29,444 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-29 00:49:29,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-29 00:49:29,444 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-29 00:49:29,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-29 00:49:29,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-29 00:49:29,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-29 00:49:29,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-29 00:49:29,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-29 00:49:29,446 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-29 00:49:29,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-29 00:49:29,812 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-29 00:49:29,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:49:29 BoogieIcfgContainer [2021-04-29 00:49:29,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-29 00:49:29,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-29 00:49:29,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-29 00:49:29,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-29 00:49:29,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 12:49:28" (1/3) ... [2021-04-29 00:49:29,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ea4450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:49:29, skipping insertion in model container [2021-04-29 00:49:29,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 12:49:29" (2/3) ... [2021-04-29 00:49:29,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ea4450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 12:49:29, skipping insertion in model container [2021-04-29 00:49:29,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 12:49:29" (3/3) ... [2021-04-29 00:49:29,823 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_tso.opt.i [2021-04-29 00:49:29,829 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-29 00:49:29,834 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-29 00:49:29,835 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-29 00:49:29,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,872 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,874 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,874 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,875 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,875 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,875 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,876 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,877 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,878 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,878 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,879 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,879 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,880 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,882 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,885 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,885 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,886 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,896 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,896 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,901 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,901 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,901 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,902 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-29 00:49:29,910 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-29 00:49:29,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-29 00:49:29,960 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-29 00:49:29,960 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-29 00:49:29,960 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-29 00:49:29,961 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-29 00:49:29,961 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-29 00:49:29,961 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-29 00:49:29,961 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-29 00:49:29,961 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-29 00:49:29,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:49:30,017 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-04-29 00:49:30,018 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:30,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-04-29 00:49:30,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-04-29 00:49:30,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:30,029 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:30,044 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:30,048 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:30,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-04-29 00:49:30,070 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-04-29 00:49:30,071 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:30,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-04-29 00:49:30,074 INFO L146 LiptonReduction]: Number of co-enabled transitions 864 [2021-04-29 00:49:33,799 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2021-04-29 00:49:33,959 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:49:34,177 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-04-29 00:49:34,342 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:49:34,514 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-04-29 00:49:34,678 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:49:34,824 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-04-29 00:49:35,022 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:49:35,214 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-04-29 00:49:35,679 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:49:35,836 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-04-29 00:49:37,077 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:49:37,421 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-04-29 00:49:37,528 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-04-29 00:49:38,598 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:49:38,894 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-04-29 00:49:39,571 INFO L158 LiptonReduction]: Checked pairs total: 5722 [2021-04-29 00:49:39,572 INFO L160 LiptonReduction]: Total number of compositions: 95 [2021-04-29 00:49:39,575 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9548 [2021-04-29 00:49:39,596 INFO L129 PetriNetUnfolder]: 0/60 cut-off events. [2021-04-29 00:49:39,596 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:39,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:39,598 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:39,598 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:39,604 INFO L82 PathProgramCache]: Analyzing trace with hash 863628178, now seen corresponding path program 1 times [2021-04-29 00:49:39,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:39,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371615116] [2021-04-29 00:49:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:39,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:39,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:39,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:39,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371615116] [2021-04-29 00:49:39,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:39,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-29 00:49:39,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654121206] [2021-04-29 00:49:39,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:39,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:39,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:39,983 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:39,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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) [2021-04-29 00:49:39,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:39,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:39,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:40,704 INFO L129 PetriNetUnfolder]: 2880/4444 cut-off events. [2021-04-29 00:49:40,705 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:40,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8871 conditions, 4444 events. 2880/4444 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 31953 event pairs, 1485 based on Foata normal form. 64/1296 useless extension candidates. Maximal degree in co-relation 8823. Up to 3322 conditions per place. [2021-04-29 00:49:40,733 INFO L132 encePairwiseOnDemand]: 132/171 looper letters, 11 selfloop transitions, 10 changer transitions 66/105 dead transitions. [2021-04-29 00:49:40,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 373 flow [2021-04-29 00:49:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-29 00:49:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-04-29 00:49:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2021-04-29 00:49:40,760 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7532163742690059 [2021-04-29 00:49:40,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2021-04-29 00:49:40,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2021-04-29 00:49:40,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:40,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2021-04-29 00:49:40,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2021-04-29 00:49:40,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-04-29 00:49:40,790 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 171.0) internal successors, (1026), 6 states have internal predecessors, (1026), 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) [2021-04-29 00:49:40,793 INFO L185 Difference]: Start difference. First operand has 80 places, 70 transitions, 149 flow. Second operand 5 states and 644 transitions. [2021-04-29 00:49:40,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 373 flow [2021-04-29 00:49:40,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 105 transitions, 370 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-04-29 00:49:40,802 INFO L241 Difference]: Finished difference. Result has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:40,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2021-04-29 00:49:40,805 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, 4 predicate places. [2021-04-29 00:49:40,806 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:40,806 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:40,807 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 39 transitions, 156 flow [2021-04-29 00:49:40,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 156 flow [2021-04-29 00:49:40,875 INFO L129 PetriNetUnfolder]: 351/559 cut-off events. [2021-04-29 00:49:40,875 INFO L130 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2021-04-29 00:49:40,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 559 events. 351/559 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 2787 event pairs, 189 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 1578. Up to 478 conditions per place. [2021-04-29 00:49:40,886 INFO L146 LiptonReduction]: Number of co-enabled transitions 582 [2021-04-29 00:49:40,917 INFO L158 LiptonReduction]: Checked pairs total: 608 [2021-04-29 00:49:40,918 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:40,918 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 113 [2021-04-29 00:49:40,920 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 156 flow [2021-04-29 00:49:40,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 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) [2021-04-29 00:49:40,921 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:40,922 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:40,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-29 00:49:40,922 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:40,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:40,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1449704499, now seen corresponding path program 1 times [2021-04-29 00:49:40,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:40,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755577431] [2021-04-29 00:49:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:41,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:41,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755577431] [2021-04-29 00:49:41,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:41,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:41,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553756959] [2021-04-29 00:49:41,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-29 00:49:41,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:41,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-29 00:49:41,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-29 00:49:41,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:41,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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) [2021-04-29 00:49:41,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:41,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:41,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:41,252 INFO L129 PetriNetUnfolder]: 324/577 cut-off events. [2021-04-29 00:49:41,252 INFO L130 PetriNetUnfolder]: For 231/294 co-relation queries the response was YES. [2021-04-29 00:49:41,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 577 events. 324/577 cut-off events. For 231/294 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 3208 event pairs, 54 based on Foata normal form. 68/336 useless extension candidates. Maximal degree in co-relation 2190. Up to 505 conditions per place. [2021-04-29 00:49:41,259 INFO L132 encePairwiseOnDemand]: 159/171 looper letters, 11 selfloop transitions, 19 changer transitions 19/67 dead transitions. [2021-04-29 00:49:41,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 420 flow [2021-04-29 00:49:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-29 00:49:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-04-29 00:49:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2021-04-29 00:49:41,262 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6988304093567251 [2021-04-29 00:49:41,262 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2021-04-29 00:49:41,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2021-04-29 00:49:41,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:41,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2021-04-29 00:49:41,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2021-04-29 00:49:41,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2021-04-29 00:49:41,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 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) [2021-04-29 00:49:41,269 INFO L185 Difference]: Start difference. First operand has 42 places, 39 transitions, 156 flow. Second operand 6 states and 717 transitions. [2021-04-29 00:49:41,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 420 flow [2021-04-29 00:49:41,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 408 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-04-29 00:49:41,280 INFO L241 Difference]: Finished difference. Result has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:41,280 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2021-04-29 00:49:41,281 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -32 predicate places. [2021-04-29 00:49:41,281 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:41,281 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:41,283 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 48 transitions, 296 flow [2021-04-29 00:49:41,283 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 48 transitions, 296 flow [2021-04-29 00:49:41,339 INFO L129 PetriNetUnfolder]: 243/433 cut-off events. [2021-04-29 00:49:41,339 INFO L130 PetriNetUnfolder]: For 381/429 co-relation queries the response was YES. [2021-04-29 00:49:41,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 433 events. 243/433 cut-off events. For 381/429 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 2323 event pairs, 54 based on Foata normal form. 3/219 useless extension candidates. Maximal degree in co-relation 1911. Up to 361 conditions per place. [2021-04-29 00:49:41,346 INFO L146 LiptonReduction]: Number of co-enabled transitions 618 [2021-04-29 00:49:41,386 INFO L158 LiptonReduction]: Checked pairs total: 836 [2021-04-29 00:49:41,386 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:41,386 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 105 [2021-04-29 00:49:41,390 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 296 flow [2021-04-29 00:49:41,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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) [2021-04-29 00:49:41,391 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:41,391 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:41,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-29 00:49:41,391 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:41,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1747621993, now seen corresponding path program 1 times [2021-04-29 00:49:41,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:41,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893087165] [2021-04-29 00:49:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:41,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:41,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,492 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-04-29 00:49:41,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-29 00:49:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:41,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893087165] [2021-04-29 00:49:41,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:41,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:41,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146548666] [2021-04-29 00:49:41,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:41,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:41,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:41,503 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 171 [2021-04-29 00:49:41,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2021-04-29 00:49:41,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:41,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 171 [2021-04-29 00:49:41,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:41,649 INFO L129 PetriNetUnfolder]: 468/927 cut-off events. [2021-04-29 00:49:41,649 INFO L130 PetriNetUnfolder]: For 1356/1476 co-relation queries the response was YES. [2021-04-29 00:49:41,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 927 events. 468/927 cut-off events. For 1356/1476 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 6311 event pairs, 91 based on Foata normal form. 80/552 useless extension candidates. Maximal degree in co-relation 4061. Up to 763 conditions per place. [2021-04-29 00:49:41,659 INFO L132 encePairwiseOnDemand]: 166/171 looper letters, 7 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2021-04-29 00:49:41,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 334 flow [2021-04-29 00:49:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2021-04-29 00:49:41,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2021-04-29 00:49:41,663 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2021-04-29 00:49:41,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2021-04-29 00:49:41,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:41,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2021-04-29 00:49:41,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-29 00:49:41,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:41,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:41,668 INFO L185 Difference]: Start difference. First operand has 46 places, 48 transitions, 296 flow. Second operand 4 states and 468 transitions. [2021-04-29 00:49:41,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 334 flow [2021-04-29 00:49:41,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 252 flow, removed 31 selfloop flow, removed 4 redundant places. [2021-04-29 00:49:41,700 INFO L241 Difference]: Finished difference. Result has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:41,701 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2021-04-29 00:49:41,701 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -33 predicate places. [2021-04-29 00:49:41,701 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:41,701 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:41,702 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:41,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:41,806 INFO L129 PetriNetUnfolder]: 474/949 cut-off events. [2021-04-29 00:49:41,807 INFO L130 PetriNetUnfolder]: For 550/644 co-relation queries the response was YES. [2021-04-29 00:49:41,810 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 949 events. 474/949 cut-off events. For 550/644 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 6506 event pairs, 101 based on Foata normal form. 7/479 useless extension candidates. Maximal degree in co-relation 3033. Up to 757 conditions per place. [2021-04-29 00:49:41,820 INFO L146 LiptonReduction]: Number of co-enabled transitions 700 [2021-04-29 00:49:41,836 INFO L158 LiptonReduction]: Checked pairs total: 104 [2021-04-29 00:49:41,836 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:41,836 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-04-29 00:49:41,838 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 247 flow [2021-04-29 00:49:41,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 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) [2021-04-29 00:49:41,838 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:41,839 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:41,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-29 00:49:41,839 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:41,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:41,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1308738810, now seen corresponding path program 1 times [2021-04-29 00:49:41,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:41,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543430951] [2021-04-29 00:49:41,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:41,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:41,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:41,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-29 00:49:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:41,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543430951] [2021-04-29 00:49:41,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:41,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-29 00:49:41,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580933544] [2021-04-29 00:49:41,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-29 00:49:41,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:41,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-29 00:49:41,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-04-29 00:49:41,905 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 171 [2021-04-29 00:49:41,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-04-29 00:49:41,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:41,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 171 [2021-04-29 00:49:41,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:42,111 INFO L129 PetriNetUnfolder]: 312/742 cut-off events. [2021-04-29 00:49:42,112 INFO L130 PetriNetUnfolder]: For 586/913 co-relation queries the response was YES. [2021-04-29 00:49:42,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 742 events. 312/742 cut-off events. For 586/913 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 5689 event pairs, 2 based on Foata normal form. 115/470 useless extension candidates. Maximal degree in co-relation 3039. Up to 649 conditions per place. [2021-04-29 00:49:42,118 INFO L132 encePairwiseOnDemand]: 159/171 looper letters, 2 selfloop transitions, 29 changer transitions 10/61 dead transitions. [2021-04-29 00:49:42,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 405 flow [2021-04-29 00:49:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-29 00:49:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-04-29 00:49:42,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 819 transitions. [2021-04-29 00:49:42,122 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2021-04-29 00:49:42,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 819 transitions. [2021-04-29 00:49:42,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 819 transitions. [2021-04-29 00:49:42,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:42,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 819 transitions. [2021-04-29 00:49:42,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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) [2021-04-29 00:49:42,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-04-29 00:49:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 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) [2021-04-29 00:49:42,131 INFO L185 Difference]: Start difference. First operand has 47 places, 51 transitions, 247 flow. Second operand 7 states and 819 transitions. [2021-04-29 00:49:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 405 flow [2021-04-29 00:49:42,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 368 flow, removed 18 selfloop flow, removed 1 redundant places. [2021-04-29 00:49:42,147 INFO L241 Difference]: Finished difference. Result has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:42,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2021-04-29 00:49:42,147 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -25 predicate places. [2021-04-29 00:49:42,148 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:42,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:42,148 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 316 flow [2021-04-29 00:49:42,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 51 transitions, 316 flow [2021-04-29 00:49:42,219 INFO L129 PetriNetUnfolder]: 204/579 cut-off events. [2021-04-29 00:49:42,220 INFO L130 PetriNetUnfolder]: For 697/987 co-relation queries the response was YES. [2021-04-29 00:49:42,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 579 events. 204/579 cut-off events. For 697/987 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 4338 event pairs, 2 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 2345. Up to 487 conditions per place. [2021-04-29 00:49:42,230 INFO L146 LiptonReduction]: Number of co-enabled transitions 634 [2021-04-29 00:49:42,238 INFO L158 LiptonReduction]: Checked pairs total: 98 [2021-04-29 00:49:42,238 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:42,238 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 90 [2021-04-29 00:49:42,246 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2021-04-29 00:49:42,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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) [2021-04-29 00:49:42,247 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:42,247 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:42,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-29 00:49:42,251 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2020727439, now seen corresponding path program 1 times [2021-04-29 00:49:42,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:42,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119659615] [2021-04-29 00:49:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:42,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:42,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:42,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:42,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119659615] [2021-04-29 00:49:42,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:42,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:42,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437590017] [2021-04-29 00:49:42,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:42,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:42,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:42,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:42,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 171 [2021-04-29 00:49:42,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-04-29 00:49:42,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:42,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 171 [2021-04-29 00:49:42,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:42,496 INFO L129 PetriNetUnfolder]: 377/1012 cut-off events. [2021-04-29 00:49:42,496 INFO L130 PetriNetUnfolder]: For 1424/1744 co-relation queries the response was YES. [2021-04-29 00:49:42,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1012 events. 377/1012 cut-off events. For 1424/1744 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 8738 event pairs, 2 based on Foata normal form. 28/534 useless extension candidates. Maximal degree in co-relation 4198. Up to 892 conditions per place. [2021-04-29 00:49:42,504 INFO L132 encePairwiseOnDemand]: 168/171 looper letters, 4 selfloop transitions, 1 changer transitions 3/53 dead transitions. [2021-04-29 00:49:42,504 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 340 flow [2021-04-29 00:49:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 494 transitions. [2021-04-29 00:49:42,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-04-29 00:49:42,507 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 494 transitions. [2021-04-29 00:49:42,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 494 transitions. [2021-04-29 00:49:42,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:42,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 494 transitions. [2021-04-29 00:49:42,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 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) [2021-04-29 00:49:42,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:42,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 171.0) internal successors, (855), 5 states have internal predecessors, (855), 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) [2021-04-29 00:49:42,514 INFO L185 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 4 states and 494 transitions. [2021-04-29 00:49:42,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 340 flow [2021-04-29 00:49:42,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 258 flow, removed 22 selfloop flow, removed 5 redundant places. [2021-04-29 00:49:42,536 INFO L241 Difference]: Finished difference. Result has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:42,536 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2021-04-29 00:49:42,536 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -27 predicate places. [2021-04-29 00:49:42,537 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:42,537 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:42,537 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 50 transitions, 241 flow [2021-04-29 00:49:42,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 50 transitions, 241 flow [2021-04-29 00:49:42,586 INFO L129 PetriNetUnfolder]: 200/576 cut-off events. [2021-04-29 00:49:42,586 INFO L130 PetriNetUnfolder]: For 421/441 co-relation queries the response was YES. [2021-04-29 00:49:42,588 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 576 events. 200/576 cut-off events. For 421/441 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 4466 event pairs, 0 based on Foata normal form. 1/286 useless extension candidates. Maximal degree in co-relation 1617. Up to 307 conditions per place. [2021-04-29 00:49:42,594 INFO L146 LiptonReduction]: Number of co-enabled transitions 542 [2021-04-29 00:49:42,671 INFO L158 LiptonReduction]: Checked pairs total: 144 [2021-04-29 00:49:42,672 INFO L160 LiptonReduction]: Total number of compositions: 2 [2021-04-29 00:49:42,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 135 [2021-04-29 00:49:42,674 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 247 flow [2021-04-29 00:49:42,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-04-29 00:49:42,675 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-04-29 00:49:42,675 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-29 00:49:42,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-29 00:49:42,675 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-29 00:49:42,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-29 00:49:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash 789895675, now seen corresponding path program 1 times [2021-04-29 00:49:42,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-29 00:49:42,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824289286] [2021-04-29 00:49:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-29 00:49:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-29 00:49:42,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-29 00:49:42,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:42,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-29 00:49:42,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-29 00:49:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-29 00:49:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824289286] [2021-04-29 00:49:42,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-29 00:49:42,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-29 00:49:42,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159974679] [2021-04-29 00:49:42,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-29 00:49:42,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-29 00:49:42,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-29 00:49:42,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-29 00:49:42,732 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 173 [2021-04-29 00:49:42,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-04-29 00:49:42,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-04-29 00:49:42,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 173 [2021-04-29 00:49:42,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-04-29 00:49:42,838 INFO L129 PetriNetUnfolder]: 299/815 cut-off events. [2021-04-29 00:49:42,838 INFO L130 PetriNetUnfolder]: For 707/724 co-relation queries the response was YES. [2021-04-29 00:49:42,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 815 events. 299/815 cut-off events. For 707/724 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 6858 event pairs, 0 based on Foata normal form. 28/425 useless extension candidates. Maximal degree in co-relation 2268. Up to 460 conditions per place. [2021-04-29 00:49:42,842 INFO L132 encePairwiseOnDemand]: 169/173 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2021-04-29 00:49:42,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 256 flow [2021-04-29 00:49:42,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-29 00:49:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-04-29 00:49:42,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2021-04-29 00:49:42,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7023121387283237 [2021-04-29 00:49:42,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2021-04-29 00:49:42,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2021-04-29 00:49:42,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-04-29 00:49:42,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2021-04-29 00:49:42,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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) [2021-04-29 00:49:42,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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) [2021-04-29 00:49:42,849 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 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) [2021-04-29 00:49:42,849 INFO L185 Difference]: Start difference. First operand has 51 places, 50 transitions, 247 flow. Second operand 4 states and 486 transitions. [2021-04-29 00:49:42,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 256 flow [2021-04-29 00:49:42,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-04-29 00:49:42,857 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:42,857 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-04-29 00:49:42,857 INFO L343 CegarLoopForPetriNet]: 80 programPoint places, -29 predicate places. [2021-04-29 00:49:42,857 INFO L171 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-04-29 00:49:42,858 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:42,858 INFO L133 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 0 transitions, 0 flow [2021-04-29 00:49:42,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-04-29 00:49:42,858 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-04-29 00:49:42,858 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-04-29 00:49:42,859 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. [2021-04-29 00:49:42,859 INFO L146 LiptonReduction]: Number of co-enabled transitions 0 [2021-04-29 00:49:42,859 INFO L158 LiptonReduction]: Checked pairs total: 0 [2021-04-29 00:49:42,859 INFO L160 LiptonReduction]: Total number of compositions: 0 [2021-04-29 00:49:42,859 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-04-29 00:49:42,869 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-04-29 00:49:42,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2021-04-29 00:49:42,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-29 00:49:42,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 12:49:42 BasicIcfg [2021-04-29 00:49:42,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-29 00:49:42,875 INFO L168 Benchmark]: Toolchain (without parser) took 14415.30 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 276.6 MB in the beginning and 321.7 MB in the end (delta: -45.1 MB). Peak memory consumption was 105.7 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:42,876 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:49:42,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.63 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 282.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:42,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.72 ms. Allocated memory is still 302.0 MB. Free memory was 282.2 MB in the beginning and 280.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-29 00:49:42,880 INFO L168 Benchmark]: Boogie Preprocessor took 40.23 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:42,881 INFO L168 Benchmark]: RCFGBuilder took 465.76 ms. Allocated memory is still 302.0 MB. Free memory was 278.2 MB in the beginning and 256.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:42,881 INFO L168 Benchmark]: TraceAbstraction took 13058.44 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 255.2 MB in the beginning and 321.7 MB in the end (delta: -66.5 MB). Peak memory consumption was 83.4 MB. Max. memory is 16.0 GB. [2021-04-29 00:49:42,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 703.63 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 282.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 92.72 ms. Allocated memory is still 302.0 MB. Free memory was 282.2 MB in the beginning and 280.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.23 ms. Allocated memory is still 302.0 MB. Free memory was 280.3 MB in the beginning and 278.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 465.76 ms. Allocated memory is still 302.0 MB. Free memory was 278.2 MB in the beginning and 256.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13058.44 ms. Allocated memory was 302.0 MB in the beginning and 450.9 MB in the end (delta: 148.9 MB). Free memory was 255.2 MB in the beginning and 321.7 MB in the end (delta: -66.5 MB). Peak memory consumption was 83.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9524.1ms, 70 PlacesBefore, 80 PlacesAfterwards, 61 TransitionsBefore, 70 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 6 FixpointIterations, 48 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 5722 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2071, positive: 1905, positive conditional: 1905, positive unconditional: 0, negative: 166, negative conditional: 166, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 951, positive: 899, positive conditional: 0, positive unconditional: 899, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 951, positive: 899, positive conditional: 0, positive unconditional: 899, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 951, positive: 887, positive conditional: 0, positive unconditional: 887, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 293, positive: 67, positive conditional: 0, positive unconditional: 67, negative: 226, negative conditional: 0, negative unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2071, positive: 1006, positive conditional: 1006, positive unconditional: 0, negative: 114, negative conditional: 114, negative unconditional: 0, unknown: 951, unknown conditional: 951, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 941, Positive cache size: 889, Positive conditional cache size: 889, Positive unconditional cache size: 0, Negative cache size: 52, Negative conditional cache size: 52, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 111.2ms, 84 PlacesBefore, 42 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 582 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 257, positive: 233, positive conditional: 233, positive unconditional: 0, negative: 24, negative conditional: 24, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 19, positive unconditional: 31, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 19, positive unconditional: 31, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 55, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 21, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 257, positive: 183, positive conditional: 183, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 55, unknown conditional: 55, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 996, Positive cache size: 939, Positive conditional cache size: 939, Positive unconditional cache size: 0, Negative cache size: 57, Negative conditional cache size: 57, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 103.1ms, 48 PlacesBefore, 46 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 618 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 836 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 143, positive: 110, positive conditional: 110, positive unconditional: 0, negative: 33, negative conditional: 33, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 15, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 15, positive unconditional: 11, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 32, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 143, positive: 84, positive conditional: 84, positive unconditional: 0, negative: 27, negative conditional: 27, negative unconditional: 0, unknown: 32, unknown conditional: 32, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1028, Positive cache size: 965, Positive conditional cache size: 965, Positive unconditional cache size: 0, Negative cache size: 63, Negative conditional cache size: 63, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 134.3ms, 47 PlacesBefore, 47 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 700 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 104 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 32, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 4, positive unconditional: 5, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 4, positive unconditional: 5, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 1, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 5, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 11, unknown conditional: 11, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1039, Positive cache size: 974, Positive conditional cache size: 974, Positive unconditional cache size: 0, Negative cache size: 65, Negative conditional cache size: 65, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 90.2ms, 55 PlacesBefore, 53 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 634 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 98 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1047, Positive cache size: 982, Positive conditional cache size: 982, Positive unconditional cache size: 0, Negative cache size: 65, Negative conditional cache size: 65, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 134.6ms, 53 PlacesBefore, 51 PlacesAfterwards, 50 TransitionsBefore, 50 TransitionsAfterwards, 542 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 144 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86, positive: 82, positive conditional: 82, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 18, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 18, positive unconditional: 6, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 86, positive: 58, positive conditional: 58, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 25, unknown conditional: 25, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1072, Positive cache size: 1006, Positive conditional cache size: 1006, Positive unconditional cache size: 0, Negative cache size: 66, Negative conditional cache size: 66, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1ms, 51 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1072, Positive cache size: 1006, Positive conditional cache size: 1006, Positive unconditional cache size: 0, Negative cache size: 66, Negative conditional cache size: 66, 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 12915.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1798.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9622.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 33 SDslu, 42 SDs, 0 SdLazy, 266 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 240.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 99.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=4, InterpolantAutomatonStates: 30, 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: 23.2ms SsaConstructionTime, 186.3ms SatisfiabilityAnalysisTime, 415.6ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 245 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...