/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:11:19,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:11:19,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:11:19,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:11:19,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:11:19,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:11:19,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:11:19,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:11:19,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:11:19,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:11:19,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:11:19,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:11:19,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:11:19,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:11:19,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:11:19,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:11:19,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:11:19,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:11:19,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:11:19,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:11:19,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:11:19,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:11:19,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:11:19,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:11:19,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 05:11:19,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 05:11:19,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 05:11:19,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 05:11:19,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 05:11:19,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-03-25 05:11:19,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:11:19,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:11:19,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:11:19,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf [2021-03-25 05:11:19,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:11:19,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:11:19,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:11:19,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:11:19,506 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:11:19,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:11:19,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:11:19,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:11:19,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:11:19,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:11:19,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:11:19,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:11:19,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:11:19,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:11:19,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:11:19,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:11:19,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:11:19,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:11:19,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:11:19,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:11:19,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:11:19,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:11:19,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:11:19,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:11:19,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:11:19,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:11:19,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:11:19,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:11:19,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:11:19,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:11:19,517 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:11:19,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:11:19,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:11:19,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:11:19,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:11:19,898 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:11:19,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2021-03-25 05:11:19,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4b15a3d/ccc192291dca4d65a99240ea36d126eb/FLAGac487a5fd [2021-03-25 05:11:20,583 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:11:20,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.opt.i [2021-03-25 05:11:20,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4b15a3d/ccc192291dca4d65a99240ea36d126eb/FLAGac487a5fd [2021-03-25 05:11:20,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4b15a3d/ccc192291dca4d65a99240ea36d126eb [2021-03-25 05:11:20,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:11:20,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:11:20,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:20,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:11:20,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:11:20,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:20" (1/1) ... [2021-03-25 05:11:20,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef70b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:20, skipping insertion in model container [2021-03-25 05:11:20,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:20" (1/1) ... [2021-03-25 05:11:20,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:11:20,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:11:21,164 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/safe033_tso.opt.i[949,962] [2021-03-25 05:11:21,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:21,366 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:11:21,380 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/safe033_tso.opt.i[949,962] [2021-03-25 05:11:21,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:21,492 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:11:21,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21 WrapperNode [2021-03-25 05:11:21,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:21,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:21,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:11:21,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:11:21,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:21,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:11:21,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:11:21,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:11:21,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... [2021-03-25 05:11:21,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:11:21,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:11:21,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:11:21,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:11:21,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:11:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:11:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:11:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:11:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:11:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:11:21,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:11:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:11:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:11:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:11:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:11:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:11:21,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:11:21,631 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:11:21,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:11:21,954 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:11:21,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:21 BoogieIcfgContainer [2021-03-25 05:11:21,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:11:21,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:11:21,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:11:21,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:11:21,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:11:20" (1/3) ... [2021-03-25 05:11:21,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251e1253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:21, skipping insertion in model container [2021-03-25 05:11:21,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:21" (2/3) ... [2021-03-25 05:11:21,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251e1253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:21, skipping insertion in model container [2021-03-25 05:11:21,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:21" (3/3) ... [2021-03-25 05:11:21,966 INFO L111 eAbstractionObserver]: Analyzing ICFG safe033_tso.opt.i [2021-03-25 05:11:21,972 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:11:21,976 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:11:21,977 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:11:22,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,016 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,017 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,018 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,019 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,020 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,020 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,020 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,022 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,028 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,028 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,033 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,034 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,034 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:22,037 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:11:22,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 05:11:22,087 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:11:22,088 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:11:22,088 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:11:22,088 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:11:22,088 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:11:22,089 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:11:22,089 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:11:22,089 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:11:22,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 60 transitions, 130 flow [2021-03-25 05:11:22,159 INFO L129 PetriNetUnfolder]: 2/58 cut-off events. [2021-03-25 05:11:22,160 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:22,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 58 events. 2/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 05:11:22,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 60 transitions, 130 flow [2021-03-25 05:11:22,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:22,181 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:22,189 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:22,193 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:22,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 48 transitions, 102 flow [2021-03-25 05:11:22,222 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-25 05:11:22,222 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:22,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-25 05:11:22,226 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-25 05:11:23,224 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-25 05:11:23,224 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-25 05:11:23,227 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1047 [2021-03-25 05:11:23,241 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 05:11:23,242 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:23,242 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:23,243 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:23,243 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:23,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1129834663, now seen corresponding path program 1 times [2021-03-25 05:11:23,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:23,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042662798] [2021-03-25 05:11:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:23,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:23,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:23,562 INFO L142 QuantifierPusher]: treesize reduction 5, result has 37.5 percent of original size [2021-03-25 05:11:23,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:23,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:23,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 05:11:23,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:23,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:11:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:23,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042662798] [2021-03-25 05:11:23,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:23,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639554936] [2021-03-25 05:11:23,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:11:23,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:23,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:11:23,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:11:23,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 92 [2021-03-25 05:11:23,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:23,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:23,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 92 [2021-03-25 05:11:23,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:23,750 INFO L129 PetriNetUnfolder]: 27/75 cut-off events. [2021-03-25 05:11:23,750 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:23,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 75 events. 27/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 243 event pairs, 0 based on Foata normal form. 7/82 useless extension candidates. Maximal degree in co-relation 134. Up to 26 conditions per place. [2021-03-25 05:11:23,753 INFO L132 encePairwiseOnDemand]: 85/92 looper letters, 11 selfloop transitions, 12 changer transitions 0/31 dead transitions. [2021-03-25 05:11:23,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 114 flow [2021-03-25 05:11:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:11:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:11:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2021-03-25 05:11:23,773 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7753623188405797 [2021-03-25 05:11:23,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2021-03-25 05:11:23,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2021-03-25 05:11:23,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:23,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2021-03-25 05:11:23,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:23,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 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) [2021-03-25 05:11:23,797 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 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) [2021-03-25 05:11:23,799 INFO L185 Difference]: Start difference. First operand has 23 places, 16 transitions, 38 flow. Second operand 6 states and 428 transitions. [2021-03-25 05:11:23,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 114 flow [2021-03-25 05:11:23,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:23,807 INFO L241 Difference]: Finished difference. Result has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:23,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2021-03-25 05:11:23,810 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2021-03-25 05:11:23,810 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:23,810 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:23,811 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:23,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 24 transitions, 109 flow [2021-03-25 05:11:23,827 INFO L129 PetriNetUnfolder]: 8/39 cut-off events. [2021-03-25 05:11:23,827 INFO L130 PetriNetUnfolder]: For 27/30 co-relation queries the response was YES. [2021-03-25 05:11:23,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 39 events. 8/39 cut-off events. For 27/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 88 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 91. Up to 18 conditions per place. [2021-03-25 05:11:23,829 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 05:11:24,119 INFO L154 LiptonReduction]: Checked pairs total: 185 [2021-03-25 05:11:24,120 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:11:24,120 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 310 [2021-03-25 05:11:24,122 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 101 flow [2021-03-25 05:11:24,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:24,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:24,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:11:24,123 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:24,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:24,132 INFO L82 PathProgramCache]: Analyzing trace with hash -665838814, now seen corresponding path program 1 times [2021-03-25 05:11:24,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:24,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208794955] [2021-03-25 05:11:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:24,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:24,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:24,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:24,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:24,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208794955] [2021-03-25 05:11:24,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:24,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:24,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659438376] [2021-03-25 05:11:24,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:24,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:24,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:24,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 95 [2021-03-25 05:11:24,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:24,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 95 [2021-03-25 05:11:24,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:24,283 INFO L129 PetriNetUnfolder]: 10/43 cut-off events. [2021-03-25 05:11:24,283 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-03-25 05:11:24,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 43 events. 10/43 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 3 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 124. Up to 25 conditions per place. [2021-03-25 05:11:24,285 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 3 selfloop transitions, 4 changer transitions 2/21 dead transitions. [2021-03-25 05:11:24,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 117 flow [2021-03-25 05:11:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:11:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:11:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2021-03-25 05:11:24,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2021-03-25 05:11:24,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2021-03-25 05:11:24,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2021-03-25 05:11:24,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:24,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2021-03-25 05:11:24,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,292 INFO L185 Difference]: Start difference. First operand has 27 places, 21 transitions, 101 flow. Second operand 3 states and 220 transitions. [2021-03-25 05:11:24,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 117 flow [2021-03-25 05:11:24,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 110 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 05:11:24,298 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:24,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-03-25 05:11:24,300 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 6 predicate places. [2021-03-25 05:11:24,300 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:24,300 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:24,301 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:24,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 96 flow [2021-03-25 05:11:24,311 INFO L129 PetriNetUnfolder]: 4/32 cut-off events. [2021-03-25 05:11:24,312 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-25 05:11:24,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 32 events. 4/32 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 1 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 79. Up to 13 conditions per place. [2021-03-25 05:11:24,312 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 05:11:24,484 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-25 05:11:24,723 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-03-25 05:11:24,792 INFO L154 LiptonReduction]: Checked pairs total: 80 [2021-03-25 05:11:24,792 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:11:24,792 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 492 [2021-03-25 05:11:24,793 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 95 flow [2021-03-25 05:11:24,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,794 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:24,794 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:24,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:11:24,794 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash 948326858, now seen corresponding path program 1 times [2021-03-25 05:11:24,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:24,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68597008] [2021-03-25 05:11:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:24,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:24,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:24,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:24,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:24,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:24,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68597008] [2021-03-25 05:11:24,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:24,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:24,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516313953] [2021-03-25 05:11:24,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:24,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:24,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:24,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 97 [2021-03-25 05:11:24,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:24,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 97 [2021-03-25 05:11:24,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:24,887 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-25 05:11:24,889 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-25 05:11:24,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 23 events. 2/23 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 3/26 useless extension candidates. Maximal degree in co-relation 65. Up to 7 conditions per place. [2021-03-25 05:11:24,890 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 1 selfloop transitions, 6 changer transitions 2/18 dead transitions. [2021-03-25 05:11:24,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 18 transitions, 109 flow [2021-03-25 05:11:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:11:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:11:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2021-03-25 05:11:24,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8144329896907216 [2021-03-25 05:11:24,899 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2021-03-25 05:11:24,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2021-03-25 05:11:24,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:24,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2021-03-25 05:11:24,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:24,902 INFO L185 Difference]: Start difference. First operand has 28 places, 18 transitions, 95 flow. Second operand 4 states and 316 transitions. [2021-03-25 05:11:24,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 18 transitions, 109 flow [2021-03-25 05:11:24,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 95 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:24,904 INFO L241 Difference]: Finished difference. Result has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:24,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=16} [2021-03-25 05:11:24,904 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2021-03-25 05:11:24,905 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:24,905 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:24,906 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:24,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 16 transitions, 90 flow [2021-03-25 05:11:24,909 INFO L129 PetriNetUnfolder]: 2/17 cut-off events. [2021-03-25 05:11:24,909 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 05:11:24,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 17 events. 2/17 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 43. Up to 5 conditions per place. [2021-03-25 05:11:24,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 05:11:25,138 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 05:11:25,139 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 05:11:25,139 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 234 [2021-03-25 05:11:25,140 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 14 transitions, 88 flow [2021-03-25 05:11:25,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,140 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:25,141 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:25,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:11:25,141 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash -45533981, now seen corresponding path program 1 times [2021-03-25 05:11:25,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:25,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779774564] [2021-03-25 05:11:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:25,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:25,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:25,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:25,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:25,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:25,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:25,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779774564] [2021-03-25 05:11:25,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:25,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:11:25,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706972563] [2021-03-25 05:11:25,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:25,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 103 [2021-03-25 05:11:25,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 14 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:25,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 103 [2021-03-25 05:11:25,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:25,226 INFO L129 PetriNetUnfolder]: 2/14 cut-off events. [2021-03-25 05:11:25,226 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2021-03-25 05:11:25,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 14 events. 2/14 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 14 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 46. Up to 6 conditions per place. [2021-03-25 05:11:25,227 INFO L132 encePairwiseOnDemand]: 97/103 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-03-25 05:11:25,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 13 transitions, 92 flow [2021-03-25 05:11:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:11:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:11:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2021-03-25 05:11:25,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7645631067961165 [2021-03-25 05:11:25,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2021-03-25 05:11:25,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2021-03-25 05:11:25,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:25,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2021-03-25 05:11:25,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,232 INFO L185 Difference]: Start difference. First operand has 28 places, 14 transitions, 88 flow. Second operand 4 states and 315 transitions. [2021-03-25 05:11:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 13 transitions, 92 flow [2021-03-25 05:11:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 50 flow, removed 4 selfloop flow, removed 10 redundant places. [2021-03-25 05:11:25,235 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:25,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-03-25 05:11:25,235 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2021-03-25 05:11:25,235 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:25,235 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:25,236 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 05:11:25,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:25,236 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:11:25,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:25,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:11:25,236 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:11:25,236 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:11:25,236 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:11:25,237 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 05:11:25,239 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:25,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:25,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:11:25,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:11:25 BasicIcfg [2021-03-25 05:11:25,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:11:25,245 INFO L168 Benchmark]: Toolchain (without parser) took 4323.37 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 233.1 MB in the beginning and 289.2 MB in the end (delta: -56.1 MB). Peak memory consumption was 113.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,248 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.6 MB in the end (delta: 85.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:11:25,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.11 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 232.7 MB in the beginning and 316.9 MB in the end (delta: -84.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.86 ms. Allocated memory is still 354.4 MB. Free memory was 316.9 MB in the beginning and 315.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,253 INFO L168 Benchmark]: Boogie Preprocessor took 20.18 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 313.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,253 INFO L168 Benchmark]: RCFGBuilder took 396.96 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 294.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,255 INFO L168 Benchmark]: TraceAbstraction took 3286.33 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 293.8 MB in the beginning and 289.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:25,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.6 MB in the end (delta: 85.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 559.11 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 232.7 MB in the beginning and 316.9 MB in the end (delta: -84.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.86 ms. Allocated memory is still 354.4 MB. Free memory was 316.9 MB in the beginning and 315.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.18 ms. Allocated memory is still 354.4 MB. Free memory was 315.2 MB in the beginning and 313.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 396.96 ms. Allocated memory is still 354.4 MB. Free memory was 313.7 MB in the beginning and 294.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3286.33 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 293.8 MB in the beginning and 289.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 77.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1031.4ms, 54 PlacesBefore, 23 PlacesAfterwards, 48 TransitionsBefore, 16 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 32 TotalNumberOfCompositions, 532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 312, positive: 286, positive conditional: 0, positive unconditional: 286, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 221, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 221, positive: 207, positive conditional: 0, positive unconditional: 207, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 312, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 221, unknown conditional: 0, unknown unconditional: 221] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 308.7ms, 30 PlacesBefore, 27 PlacesAfterwards, 24 TransitionsBefore, 21 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 185 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 141, positive: 119, positive conditional: 0, positive unconditional: 119, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 141, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 490.6ms, 29 PlacesBefore, 28 PlacesAfterwards, 19 TransitionsBefore, 18 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 2 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 80 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 44, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 233.2ms, 30 PlacesBefore, 28 PlacesAfterwards, 16 TransitionsBefore, 14 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 4 FixpointIterations, 4 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 20 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3158.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 329.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1144.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 14 SDslu, 7 SDs, 0 SdLazy, 49 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=1, InterpolantAutomatonStates: 17, 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: 15.8ms SsaConstructionTime, 130.3ms SatisfiabilityAnalysisTime, 305.4ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...