/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:50:18,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:50:18,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:50:18,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:50:18,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:50:18,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:50:18,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:50:18,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:50:18,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:50:18,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:50:18,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:50:18,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:50:18,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:50:18,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:50:18,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:50:18,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:50:18,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:50:18,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:50:18,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:50:18,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:50:18,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:50:18,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:50:18,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:50:18,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:50:18,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 19:50:18,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 19:50:18,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 19:50:18,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 19:50:18,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 19:50:18,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 19:50:18,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 19:50:18,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 19:50:18,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 19:50:18,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:50:18,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:50:18,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:50:18,669 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-SemanticLbe.epf [2021-03-24 19:50:18,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:50:18,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:50:18,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:50:18,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:50:18,709 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:50:18,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:50:18,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:50:18,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:50:18,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:50:18,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:50:18,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:50:18,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:50:18,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:50:18,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:50:18,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:50:18,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:50:18,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:50:18,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:50:18,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:50:18,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:50:19,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:50:19,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:50:19,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:50:19,016 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:50:19,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_tso.oepc.i [2021-03-24 19:50:19,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370311d49/7ed6f3b95b344c779096e9fe1e4a701a/FLAG735cae197 [2021-03-24 19:50:19,631 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:50:19,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_tso.oepc.i [2021-03-24 19:50:19,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370311d49/7ed6f3b95b344c779096e9fe1e4a701a/FLAG735cae197 [2021-03-24 19:50:20,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370311d49/7ed6f3b95b344c779096e9fe1e4a701a [2021-03-24 19:50:20,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:50:20,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:50:20,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:50:20,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:50:20,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:50:20,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6d1ba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20, skipping insertion in model container [2021-03-24 19:50:20,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:50:20,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:50:20,204 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/safe006_tso.oepc.i[950,963] [2021-03-24 19:50:20,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:50:20,402 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:50:20,413 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/safe006_tso.oepc.i[950,963] [2021-03-24 19:50:20,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:50:20,519 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:50:20,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20 WrapperNode [2021-03-24 19:50:20,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:50:20,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:50:20,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:50:20,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:50:20,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:50:20,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:50:20,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:50:20,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:50:20,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (1/1) ... [2021-03-24 19:50:20,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:50:20,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:50:20,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:50:20,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:50:20,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (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 [2021-03-24 19:50:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:50:20,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:50:20,665 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:50:20,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:50:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:50:20,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:50:20,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:50:20,667 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:50:20,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:50:20,933 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:50:20,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:50:20 BoogieIcfgContainer [2021-03-24 19:50:20,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:50:20,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:50:20,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:50:20,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:50:20,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:50:20" (1/3) ... [2021-03-24 19:50:20,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0220f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:50:20, skipping insertion in model container [2021-03-24 19:50:20,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:50:20" (2/3) ... [2021-03-24 19:50:20,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0220f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:50:20, skipping insertion in model container [2021-03-24 19:50:20,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:50:20" (3/3) ... [2021-03-24 19:50:20,940 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_tso.oepc.i [2021-03-24 19:50:20,943 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:50:20,946 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:50:20,946 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:50:20,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,967 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,967 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,967 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,968 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,969 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,970 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,973 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,973 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,974 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,978 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,978 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:50:20,980 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:50:20,996 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 19:50:21,014 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:50:21,014 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:50:21,014 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:50:21,014 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:50:21,015 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:50:21,015 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:50:21,015 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:50:21,015 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:50:21,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-24 19:50:21,052 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-24 19:50:21,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:21,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 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. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-24 19:50:21,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-24 19:50:21,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-24 19:50:21,059 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:50:21,071 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-24 19:50:21,074 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 104 flow [2021-03-24 19:50:21,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 104 flow [2021-03-24 19:50:21,087 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-24 19:50:21,088 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:21,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 49 events. 1/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-03-24 19:50:21,090 INFO L142 LiptonReduction]: Number of co-enabled transitions 456 [2021-03-24 19:50:22,116 INFO L154 LiptonReduction]: Checked pairs total: 608 [2021-03-24 19:50:22,117 INFO L156 LiptonReduction]: Total number of compositions: 34 [2021-03-24 19:50:22,120 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1062 [2021-03-24 19:50:22,134 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-03-24 19:50:22,134 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:22,134 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,135 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,135 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1656014901, now seen corresponding path program 1 times [2021-03-24 19:50:22,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194757526] [2021-03-24 19:50:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,316 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194757526] [2021-03-24 19:50:22,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:50:22,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280792641] [2021-03-24 19:50:22,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:50:22,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:50:22,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:50:22,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-03-24 19:50:22,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2021-03-24 19:50:22,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-03-24 19:50:22,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,369 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-24 19:50:22,369 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:50:22,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 1 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 32. Up to 10 conditions per place. [2021-03-24 19:50:22,370 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 3 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2021-03-24 19:50:22,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 52 flow [2021-03-24 19:50:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:50:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:50:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2021-03-24 19:50:22,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8350877192982457 [2021-03-24 19:50:22,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2021-03-24 19:50:22,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2021-03-24 19:50:22,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2021-03-24 19:50:22,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 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) [2021-03-24 19:50:22,390 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) [2021-03-24 19:50:22,391 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) [2021-03-24 19:50:22,392 INFO L185 Difference]: Start difference. First operand has 22 places, 15 transitions, 36 flow. Second operand 3 states and 238 transitions. [2021-03-24 19:50:22,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 52 flow [2021-03-24 19:50:22,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:50:22,396 INFO L241 Difference]: Finished difference. Result has 23 places, 17 transitions, 53 flow [2021-03-24 19:50:22,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=23, PETRI_TRANSITIONS=17} [2021-03-24 19:50:22,398 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2021-03-24 19:50:22,399 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 17 transitions, 53 flow [2021-03-24 19:50:22,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2021-03-24 19:50:22,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,399 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:50:22,399 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 203145301, now seen corresponding path program 1 times [2021-03-24 19:50:22,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734585725] [2021-03-24 19:50:22,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,478 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734585725] [2021-03-24 19:50:22,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:22,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402058024] [2021-03-24 19:50:22,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:22,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:22,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:22,488 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-03-24 19:50:22,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2021-03-24 19:50:22,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-03-24 19:50:22,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,513 INFO L129 PetriNetUnfolder]: 4/37 cut-off events. [2021-03-24 19:50:22,513 INFO L130 PetriNetUnfolder]: For 14/25 co-relation queries the response was YES. [2021-03-24 19:50:22,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 37 events. 4/37 cut-off events. For 14/25 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 0 based on Foata normal form. 3/39 useless extension candidates. Maximal degree in co-relation 65. Up to 12 conditions per place. [2021-03-24 19:50:22,513 INFO L132 encePairwiseOnDemand]: 90/95 looper letters, 4 selfloop transitions, 6 changer transitions 0/20 dead transitions. [2021-03-24 19:50:22,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 83 flow [2021-03-24 19:50:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2021-03-24 19:50:22,516 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.791578947368421 [2021-03-24 19:50:22,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-03-24 19:50:22,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2021-03-24 19:50:22,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2021-03-24 19:50:22,521 INFO L185 Difference]: Start difference. First operand has 23 places, 17 transitions, 53 flow. Second operand 5 states and 376 transitions. [2021-03-24 19:50:22,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 83 flow [2021-03-24 19:50:22,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:50:22,522 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 84 flow [2021-03-24 19:50:22,522 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-03-24 19:50:22,523 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2021-03-24 19:50:22,523 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 84 flow [2021-03-24 19:50:22,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2021-03-24 19:50:22,523 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,523 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:50:22,523 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,524 INFO L82 PathProgramCache]: Analyzing trace with hash 202651502, now seen corresponding path program 1 times [2021-03-24 19:50:22,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812238941] [2021-03-24 19:50:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,581 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812238941] [2021-03-24 19:50:22,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:22,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949670252] [2021-03-24 19:50:22,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:22,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:22,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:22,592 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 95 [2021-03-24 19:50:22,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 84 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) [2021-03-24 19:50:22,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 95 [2021-03-24 19:50:22,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,611 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-03-24 19:50:22,611 INFO L130 PetriNetUnfolder]: For 38/53 co-relation queries the response was YES. [2021-03-24 19:50:22,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 24 events. 1/24 cut-off events. For 38/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 49. Up to 7 conditions per place. [2021-03-24 19:50:22,612 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 3 selfloop transitions, 3 changer transitions 2/19 dead transitions. [2021-03-24 19:50:22,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 98 flow [2021-03-24 19:50:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:50:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:50:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2021-03-24 19:50:22,616 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-03-24 19:50:22,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2021-03-24 19:50:22,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2021-03-24 19:50:22,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2021-03-24 19:50:22,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2021-03-24 19:50:22,618 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) [2021-03-24 19:50:22,618 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) [2021-03-24 19:50:22,618 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 84 flow. Second operand 3 states and 237 transitions. [2021-03-24 19:50:22,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 98 flow [2021-03-24 19:50:22,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:50:22,619 INFO L241 Difference]: Finished difference. Result has 31 places, 17 transitions, 79 flow [2021-03-24 19:50:22,619 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2021-03-24 19:50:22,619 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2021-03-24 19:50:22,619 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 79 flow [2021-03-24 19:50:22,620 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) [2021-03-24 19:50:22,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,620 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:50:22,620 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1836970668, now seen corresponding path program 1 times [2021-03-24 19:50:22,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234308098] [2021-03-24 19:50:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,656 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234308098] [2021-03-24 19:50:22,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:50:22,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679419318] [2021-03-24 19:50:22,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:50:22,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:50:22,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:50:22,664 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-03-24 19:50:22,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2021-03-24 19:50:22,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-03-24 19:50:22,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,685 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-03-24 19:50:22,685 INFO L130 PetriNetUnfolder]: For 75/91 co-relation queries the response was YES. [2021-03-24 19:50:22,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 28 events. 1/28 cut-off events. For 75/91 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 61 event pairs, 0 based on Foata normal form. 7/35 useless extension candidates. Maximal degree in co-relation 64. Up to 8 conditions per place. [2021-03-24 19:50:22,686 INFO L132 encePairwiseOnDemand]: 90/95 looper letters, 4 selfloop transitions, 4 changer transitions 2/20 dead transitions. [2021-03-24 19:50:22,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 119 flow [2021-03-24 19:50:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:50:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:50:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 376 transitions. [2021-03-24 19:50:22,687 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.791578947368421 [2021-03-24 19:50:22,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 376 transitions. [2021-03-24 19:50:22,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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) [2021-03-24 19:50:22,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2021-03-24 19:50:22,690 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 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) [2021-03-24 19:50:22,690 INFO L185 Difference]: Start difference. First operand has 31 places, 17 transitions, 79 flow. Second operand 5 states and 376 transitions. [2021-03-24 19:50:22,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 119 flow [2021-03-24 19:50:22,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 101 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-24 19:50:22,692 INFO L241 Difference]: Finished difference. Result has 32 places, 17 transitions, 85 flow [2021-03-24 19:50:22,692 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2021-03-24 19:50:22,692 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2021-03-24 19:50:22,692 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 85 flow [2021-03-24 19:50:22,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 74.0) internal successors, (296), 4 states have internal predecessors, (296), 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) [2021-03-24 19:50:22,693 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,693 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:50:22,693 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,694 INFO L82 PathProgramCache]: Analyzing trace with hash 278952210, now seen corresponding path program 1 times [2021-03-24 19:50:22,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282923473] [2021-03-24 19:50:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,729 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282923473] [2021-03-24 19:50:22,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:50:22,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013467537] [2021-03-24 19:50:22,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:50:22,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:50:22,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:50:22,738 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-03-24 19:50:22,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2021-03-24 19:50:22,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-03-24 19:50:22,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,755 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 19:50:22,755 INFO L130 PetriNetUnfolder]: For 70/77 co-relation queries the response was YES. [2021-03-24 19:50:22,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 21 events. 0/21 cut-off events. For 70/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 3/24 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-24 19:50:22,756 INFO L132 encePairwiseOnDemand]: 91/95 looper letters, 2 selfloop transitions, 3 changer transitions 2/17 dead transitions. [2021-03-24 19:50:22,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 17 transitions, 99 flow [2021-03-24 19:50:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2021-03-24 19:50:22,759 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-03-24 19:50:22,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 300 transitions. [2021-03-24 19:50:22,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 300 transitions. [2021-03-24 19:50:22,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 300 transitions. [2021-03-24 19:50:22,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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) [2021-03-24 19:50:22,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-24 19:50:22,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-24 19:50:22,761 INFO L185 Difference]: Start difference. First operand has 32 places, 17 transitions, 85 flow. Second operand 4 states and 300 transitions. [2021-03-24 19:50:22,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 17 transitions, 99 flow [2021-03-24 19:50:22,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 17 transitions, 84 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-24 19:50:22,763 INFO L241 Difference]: Finished difference. Result has 31 places, 15 transitions, 70 flow [2021-03-24 19:50:22,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=15} [2021-03-24 19:50:22,763 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 9 predicate places. [2021-03-24 19:50:22,764 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 15 transitions, 70 flow [2021-03-24 19:50:22,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2021-03-24 19:50:22,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:50:22,764 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:50:22,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:50:22,764 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:50:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:50:22,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1437482520, now seen corresponding path program 1 times [2021-03-24 19:50:22,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:50:22,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113007376] [2021-03-24 19:50:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:50:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:50:22,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:50:22,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:50:22,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:50:22,796 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-24 19:50:22,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 19:50:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:50:22,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113007376] [2021-03-24 19:50:22,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:50:22,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:50:22,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150779881] [2021-03-24 19:50:22,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:50:22,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:50:22,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:50:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:50:22,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 95 [2021-03-24 19:50:22,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 15 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2021-03-24 19:50:22,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:50:22,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 95 [2021-03-24 19:50:22,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:50:22,816 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-24 19:50:22,816 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-03-24 19:50:22,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 14 events. 0/14 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 2/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-24 19:50:22,816 INFO L132 encePairwiseOnDemand]: 92/95 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2021-03-24 19:50:22,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 14 transitions, 66 flow [2021-03-24 19:50:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:50:22,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:50:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2021-03-24 19:50:22,818 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7842105263157895 [2021-03-24 19:50:22,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2021-03-24 19:50:22,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2021-03-24 19:50:22,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:50:22,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2021-03-24 19:50:22,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2021-03-24 19:50:22,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-24 19:50:22,820 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-24 19:50:22,820 INFO L185 Difference]: Start difference. First operand has 31 places, 15 transitions, 70 flow. Second operand 4 states and 298 transitions. [2021-03-24 19:50:22,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 14 transitions, 66 flow [2021-03-24 19:50:22,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 40 flow, removed 2 selfloop flow, removed 11 redundant places. [2021-03-24 19:50:22,821 INFO L241 Difference]: Finished difference. Result has 22 places, 0 transitions, 0 flow [2021-03-24 19:50:22,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=22, PETRI_TRANSITIONS=0} [2021-03-24 19:50:22,821 INFO L343 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2021-03-24 19:50:22,821 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 0 transitions, 0 flow [2021-03-24 19:50:22,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2021-03-24 19:50:22,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:50:22,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:50:22 BasicIcfg [2021-03-24 19:50:22,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:50:22,826 INFO L168 Benchmark]: Toolchain (without parser) took 2763.41 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 237.1 MB in the beginning and 229.9 MB in the end (delta: 7.2 MB). Peak memory consumption was 106.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:22,826 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:50:22,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 457.08 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 237.1 MB in the beginning and 320.4 MB in the end (delta: -83.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:22,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.19 ms. Allocated memory is still 356.5 MB. Free memory was 320.4 MB in the beginning and 318.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:22,827 INFO L168 Benchmark]: Boogie Preprocessor took 31.94 ms. Allocated memory is still 356.5 MB. Free memory was 318.2 MB in the beginning and 317.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:50:22,828 INFO L168 Benchmark]: RCFGBuilder took 329.46 ms. Allocated memory is still 356.5 MB. Free memory was 317.0 MB in the beginning and 296.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:22,828 INFO L168 Benchmark]: TraceAbstraction took 1889.51 ms. Allocated memory is still 356.5 MB. Free memory was 296.7 MB in the beginning and 229.9 MB in the end (delta: 66.7 MB). Peak memory consumption was 68.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:50:22,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 457.08 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 237.1 MB in the beginning and 320.4 MB in the end (delta: -83.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 51.19 ms. Allocated memory is still 356.5 MB. Free memory was 320.4 MB in the beginning and 318.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.94 ms. Allocated memory is still 356.5 MB. Free memory was 318.2 MB in the beginning and 317.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 329.46 ms. Allocated memory is still 356.5 MB. Free memory was 317.0 MB in the beginning and 296.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1889.51 ms. Allocated memory is still 356.5 MB. Free memory was 296.7 MB in the beginning and 229.9 MB in the end (delta: 66.7 MB). Peak memory consumption was 68.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1043.1ms, 55 PlacesBefore, 22 PlacesAfterwards, 49 TransitionsBefore, 15 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 34 TotalNumberOfCompositions, 608 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 422, positive: 390, positive conditional: 0, positive unconditional: 390, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 304, positive: 285, positive conditional: 0, positive unconditional: 285, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 304, positive: 285, positive conditional: 0, positive unconditional: 285, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 304, positive: 285, positive conditional: 0, positive unconditional: 285, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 422, positive: 105, positive conditional: 0, positive unconditional: 105, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 304, unknown conditional: 0, unknown unconditional: 304] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1811.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 196.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1111.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 14 SDslu, 6 SDs, 0 SdLazy, 33 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=4, InterpolantAutomatonStates: 24, 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: 11.7ms SsaConstructionTime, 86.1ms SatisfiabilityAnalysisTime, 266.9ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 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...