/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:36:57,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:36:57,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:36:57,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:36:57,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:36:57,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:36:57,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:36:57,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:36:58,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:36:58,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:36:58,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:36:58,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:36:58,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:36:58,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:36:58,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:36:58,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:36:58,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:36:58,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:36:58,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:36:58,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:36:58,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:36:58,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:36:58,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:36:58,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:36:58,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:36:58,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:36:58,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:36:58,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:36:58,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:36:58,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:36:58,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:36:58,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:36:58,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:36:58,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:36:58,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:36:58,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:36:58,041 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-NoLbe.epf [2021-06-13 07:36:58,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:36:58,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:36:58,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:36:58,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:36:58,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:36:58,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:36:58,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:36:58,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:36:58,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:36:58,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:36:58,060 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:36:58,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:36:58,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:36:58,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:36:58,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:36:58,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:36:58,306 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:36:58,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2021-06-13 07:36:58,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c5bd32/fc6217b097294a29abd944dfec82fc74/FLAG43dc2ae61 [2021-06-13 07:36:58,718 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:36:58,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i [2021-06-13 07:36:58,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c5bd32/fc6217b097294a29abd944dfec82fc74/FLAG43dc2ae61 [2021-06-13 07:36:59,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/661c5bd32/fc6217b097294a29abd944dfec82fc74 [2021-06-13 07:36:59,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:36:59,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:36:59,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:59,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:36:59,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:36:59,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7625a3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59, skipping insertion in model container [2021-06-13 07:36:59,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:36:59,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:36:59,240 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i[952,965] [2021-06-13 07:36:59,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:59,359 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:36:59,366 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_power.oepc.i[952,965] [2021-06-13 07:36:59,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:36:59,449 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:36:59,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59 WrapperNode [2021-06-13 07:36:59,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:36:59,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:59,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:36:59,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:36:59,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:36:59,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:36:59,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:36:59,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:36:59,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (1/1) ... [2021-06-13 07:36:59,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:36:59,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:36:59,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:36:59,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:36:59,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (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 [2021-06-13 07:36:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:36:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:36:59,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:36:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:36:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:36:59,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:36:59,581 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:36:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:36:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:36:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:36:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:36:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:36:59,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:36:59,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:36:59,583 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:36:59,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:36:59,838 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:36:59,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:59 BoogieIcfgContainer [2021-06-13 07:36:59,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:36:59,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:36:59,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:36:59,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:36:59,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:36:59" (1/3) ... [2021-06-13 07:36:59,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3526c2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:59, skipping insertion in model container [2021-06-13 07:36:59,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:36:59" (2/3) ... [2021-06-13 07:36:59,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3526c2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:36:59, skipping insertion in model container [2021-06-13 07:36:59,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:36:59" (3/3) ... [2021-06-13 07:36:59,844 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_power.oepc.i [2021-06-13 07:36:59,848 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:36:59,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:36:59,848 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,867 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,871 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,871 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,874 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,876 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:36:59,877 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:36:59,891 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:36:59,903 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:36:59,904 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:36:59,904 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:36:59,904 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:36:59,904 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:36:59,904 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:36:59,904 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:36:59,904 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:36:59,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-06-13 07:36:59,940 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-06-13 07:36:59,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:59,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:36:59,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-06-13 07:36:59,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-06-13 07:36:59,959 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-06-13 07:36:59,959 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:36:59,959 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:36:59,960 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:36:59,960 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:36:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:36:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1743011939, now seen corresponding path program 1 times [2021-06-13 07:36:59,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:36:59,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386830272] [2021-06-13 07:36:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:00,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:00,191 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:37:00,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:37:00,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:37:00,216 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:37:00,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:00,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:00,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:00,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386830272] [2021-06-13 07:37:00,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386830272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:00,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:00,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:37:00,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822191986] [2021-06-13 07:37:00,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:37:00,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:37:00,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:37:00,243 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-06-13 07:37:00,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-06-13 07:37:00,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:00,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-06-13 07:37:00,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:00,383 INFO L129 PetriNetUnfolder]: 112/319 cut-off events. [2021-06-13 07:37:00,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:00,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 319 events. 112/319 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1476 event pairs, 2 based on Foata normal form. 15/323 useless extension candidates. Maximal degree in co-relation 501. Up to 81 conditions per place. [2021-06-13 07:37:00,386 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 10 selfloop transitions, 6 changer transitions 25/99 dead transitions. [2021-06-13 07:37:00,386 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 289 flow [2021-06-13 07:37:00,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 756 transitions. [2021-06-13 07:37:00,397 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8894117647058823 [2021-06-13 07:37:00,397 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 756 transitions. [2021-06-13 07:37:00,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 756 transitions. [2021-06-13 07:37:00,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:00,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 756 transitions. [2021-06-13 07:37:00,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.6) internal successors, (756), 10 states have internal predecessors, (756), 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) [2021-06-13 07:37:00,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:00,409 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:00,411 INFO L185 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 10 states and 756 transitions. [2021-06-13 07:37:00,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 289 flow [2021-06-13 07:37:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:37:00,416 INFO L241 Difference]: Finished difference. Result has 91 places, 71 transitions, 198 flow [2021-06-13 07:37:00,417 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=198, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2021-06-13 07:37:00,417 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2021-06-13 07:37:00,417 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 198 flow [2021-06-13 07:37:00,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 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) [2021-06-13 07:37:00,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:00,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:00,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:37:00,418 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:00,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1473884635, now seen corresponding path program 1 times [2021-06-13 07:37:00,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:00,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217304330] [2021-06-13 07:37:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:00,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:00,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:00,533 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:37:00,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:37:00,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:37:00,556 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:37:00,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:00,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:00,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:00,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217304330] [2021-06-13 07:37:00,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217304330] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:00,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:00,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:00,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191735637] [2021-06-13 07:37:00,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:00,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:00,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:00,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:00,567 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-06-13 07:37:00,567 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-06-13 07:37:00,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:00,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-06-13 07:37:00,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:00,731 INFO L129 PetriNetUnfolder]: 52/201 cut-off events. [2021-06-13 07:37:00,731 INFO L130 PetriNetUnfolder]: For 291/318 co-relation queries the response was YES. [2021-06-13 07:37:00,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 201 events. 52/201 cut-off events. For 291/318 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 665 event pairs, 0 based on Foata normal form. 13/212 useless extension candidates. Maximal degree in co-relation 541. Up to 75 conditions per place. [2021-06-13 07:37:00,734 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-06-13 07:37:00,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 96 transitions, 451 flow [2021-06-13 07:37:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 750 transitions. [2021-06-13 07:37:00,740 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2021-06-13 07:37:00,740 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 750 transitions. [2021-06-13 07:37:00,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 750 transitions. [2021-06-13 07:37:00,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:00,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 750 transitions. [2021-06-13 07:37:00,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2021-06-13 07:37:00,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:00,743 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:00,744 INFO L185 Difference]: Start difference. First operand has 91 places, 71 transitions, 198 flow. Second operand 10 states and 750 transitions. [2021-06-13 07:37:00,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 96 transitions, 451 flow [2021-06-13 07:37:00,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 427 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-13 07:37:00,751 INFO L241 Difference]: Finished difference. Result has 95 places, 74 transitions, 266 flow [2021-06-13 07:37:00,751 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=95, PETRI_TRANSITIONS=74} [2021-06-13 07:37:00,751 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 16 predicate places. [2021-06-13 07:37:00,752 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 74 transitions, 266 flow [2021-06-13 07:37:00,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2021-06-13 07:37:00,752 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:00,752 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:00,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:37:00,753 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:00,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1121777187, now seen corresponding path program 1 times [2021-06-13 07:37:00,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:00,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252727361] [2021-06-13 07:37:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:00,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:00,819 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:37:00,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:37:00,826 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:00,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:00,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:00,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:00,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:00,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:00,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:00,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252727361] [2021-06-13 07:37:00,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252727361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:00,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:00,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:00,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001846406] [2021-06-13 07:37:00,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:00,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:00,861 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-06-13 07:37:00,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 74 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2021-06-13 07:37:00,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:00,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-06-13 07:37:00,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:01,014 INFO L129 PetriNetUnfolder]: 67/363 cut-off events. [2021-06-13 07:37:01,014 INFO L130 PetriNetUnfolder]: For 777/836 co-relation queries the response was YES. [2021-06-13 07:37:01,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 363 events. 67/363 cut-off events. For 777/836 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1944 event pairs, 12 based on Foata normal form. 13/362 useless extension candidates. Maximal degree in co-relation 920. Up to 76 conditions per place. [2021-06-13 07:37:01,017 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 23 selfloop transitions, 4 changer transitions 13/100 dead transitions. [2021-06-13 07:37:01,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 398 flow [2021-06-13 07:37:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:01,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 712 transitions. [2021-06-13 07:37:01,018 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8376470588235294 [2021-06-13 07:37:01,018 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 712 transitions. [2021-06-13 07:37:01,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 712 transitions. [2021-06-13 07:37:01,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:01,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 712 transitions. [2021-06-13 07:37:01,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.2) internal successors, (712), 10 states have internal predecessors, (712), 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) [2021-06-13 07:37:01,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:01,021 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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) [2021-06-13 07:37:01,021 INFO L185 Difference]: Start difference. First operand has 95 places, 74 transitions, 266 flow. Second operand 10 states and 712 transitions. [2021-06-13 07:37:01,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 398 flow [2021-06-13 07:37:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 100 transitions, 342 flow, removed 20 selfloop flow, removed 9 redundant places. [2021-06-13 07:37:01,025 INFO L241 Difference]: Finished difference. Result has 99 places, 77 transitions, 263 flow [2021-06-13 07:37:01,025 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2021-06-13 07:37:01,026 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2021-06-13 07:37:01,026 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 263 flow [2021-06-13 07:37:01,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 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) [2021-06-13 07:37:01,026 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:01,026 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:01,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:37:01,026 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash -826149209, now seen corresponding path program 2 times [2021-06-13 07:37:01,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:01,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987865228] [2021-06-13 07:37:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,088 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:37:01,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:37:01,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:37:01,111 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:37:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:01,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:01,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:01,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987865228] [2021-06-13 07:37:01,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987865228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:01,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:01,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:37:01,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556183569] [2021-06-13 07:37:01,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:37:01,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:01,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:37:01,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:37:01,125 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-06-13 07:37:01,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-06-13 07:37:01,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:01,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-06-13 07:37:01,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:01,274 INFO L129 PetriNetUnfolder]: 42/236 cut-off events. [2021-06-13 07:37:01,274 INFO L130 PetriNetUnfolder]: For 373/474 co-relation queries the response was YES. [2021-06-13 07:37:01,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 236 events. 42/236 cut-off events. For 373/474 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1065 event pairs, 2 based on Foata normal form. 50/278 useless extension candidates. Maximal degree in co-relation 642. Up to 65 conditions per place. [2021-06-13 07:37:01,276 INFO L132 encePairwiseOnDemand]: 76/85 looper letters, 6 selfloop transitions, 14 changer transitions 9/90 dead transitions. [2021-06-13 07:37:01,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 90 transitions, 408 flow [2021-06-13 07:37:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:37:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:37:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 812 transitions. [2021-06-13 07:37:01,278 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8684491978609625 [2021-06-13 07:37:01,278 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 812 transitions. [2021-06-13 07:37:01,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 812 transitions. [2021-06-13 07:37:01,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:01,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 812 transitions. [2021-06-13 07:37:01,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.81818181818181) internal successors, (812), 11 states have internal predecessors, (812), 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) [2021-06-13 07:37:01,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:37:01,281 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 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) [2021-06-13 07:37:01,281 INFO L185 Difference]: Start difference. First operand has 99 places, 77 transitions, 263 flow. Second operand 11 states and 812 transitions. [2021-06-13 07:37:01,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 90 transitions, 408 flow [2021-06-13 07:37:01,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 377 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-06-13 07:37:01,284 INFO L241 Difference]: Finished difference. Result has 105 places, 80 transitions, 313 flow [2021-06-13 07:37:01,284 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=313, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2021-06-13 07:37:01,285 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 26 predicate places. [2021-06-13 07:37:01,285 INFO L482 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 313 flow [2021-06-13 07:37:01,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 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) [2021-06-13 07:37:01,285 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:01,285 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:01,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:37:01,285 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1364122173, now seen corresponding path program 1 times [2021-06-13 07:37:01,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:01,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125763774] [2021-06-13 07:37:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:01,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,322 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:01,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:01,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:01,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:01,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:01,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:01,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125763774] [2021-06-13 07:37:01,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125763774] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:01,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:01,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:01,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608099094] [2021-06-13 07:37:01,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:01,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:01,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:01,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:01,355 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-06-13 07:37:01,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2021-06-13 07:37:01,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:01,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-06-13 07:37:01,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:01,445 INFO L129 PetriNetUnfolder]: 41/330 cut-off events. [2021-06-13 07:37:01,446 INFO L130 PetriNetUnfolder]: For 625/651 co-relation queries the response was YES. [2021-06-13 07:37:01,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 330 events. 41/330 cut-off events. For 625/651 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1978 event pairs, 2 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 867. Up to 80 conditions per place. [2021-06-13 07:37:01,447 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 10 selfloop transitions, 1 changer transitions 6/86 dead transitions. [2021-06-13 07:37:01,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 86 transitions, 373 flow [2021-06-13 07:37:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:37:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:37:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 513 transitions. [2021-06-13 07:37:01,449 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8621848739495799 [2021-06-13 07:37:01,449 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 513 transitions. [2021-06-13 07:37:01,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 513 transitions. [2021-06-13 07:37:01,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:01,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 513 transitions. [2021-06-13 07:37:01,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-06-13 07:37:01,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-06-13 07:37:01,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-06-13 07:37:01,452 INFO L185 Difference]: Start difference. First operand has 105 places, 80 transitions, 313 flow. Second operand 7 states and 513 transitions. [2021-06-13 07:37:01,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 86 transitions, 373 flow [2021-06-13 07:37:01,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 309 flow, removed 25 selfloop flow, removed 11 redundant places. [2021-06-13 07:37:01,456 INFO L241 Difference]: Finished difference. Result has 103 places, 80 transitions, 270 flow [2021-06-13 07:37:01,457 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2021-06-13 07:37:01,457 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2021-06-13 07:37:01,457 INFO L482 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 270 flow [2021-06-13 07:37:01,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 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) [2021-06-13 07:37:01,457 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:01,457 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:01,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:37:01,457 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:01,458 INFO L82 PathProgramCache]: Analyzing trace with hash 139381821, now seen corresponding path program 2 times [2021-06-13 07:37:01,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:01,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39625356] [2021-06-13 07:37:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:01,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:01,512 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:37:01,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:37:01,518 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:01,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:01,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:01,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:01,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:01,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:01,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:01,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39625356] [2021-06-13 07:37:01,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39625356] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:01,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:01,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:01,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785492859] [2021-06-13 07:37:01,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:01,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:01,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:01,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:01,551 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-06-13 07:37:01,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-06-13 07:37:01,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:01,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-06-13 07:37:01,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:01,629 INFO L129 PetriNetUnfolder]: 26/248 cut-off events. [2021-06-13 07:37:01,629 INFO L130 PetriNetUnfolder]: For 135/153 co-relation queries the response was YES. [2021-06-13 07:37:01,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 248 events. 26/248 cut-off events. For 135/153 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1243 event pairs, 0 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 533. Up to 27 conditions per place. [2021-06-13 07:37:01,630 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-06-13 07:37:01,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 82 transitions, 324 flow [2021-06-13 07:37:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:37:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:37:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 486 transitions. [2021-06-13 07:37:01,631 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8168067226890756 [2021-06-13 07:37:01,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 486 transitions. [2021-06-13 07:37:01,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 486 transitions. [2021-06-13 07:37:01,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:01,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 486 transitions. [2021-06-13 07:37:01,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:01,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-06-13 07:37:01,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2021-06-13 07:37:01,633 INFO L185 Difference]: Start difference. First operand has 103 places, 80 transitions, 270 flow. Second operand 7 states and 486 transitions. [2021-06-13 07:37:01,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 82 transitions, 324 flow [2021-06-13 07:37:01,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 303 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-06-13 07:37:01,635 INFO L241 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2021-06-13 07:37:01,635 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2021-06-13 07:37:01,635 INFO L335 CegarLoopForPetriNet]: 79 programPoint places, 18 predicate places. [2021-06-13 07:37:01,635 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2021-06-13 07:37:01,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2021-06-13 07:37:01,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:37:01,637 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:37:01,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:37:01 BasicIcfg [2021-06-13 07:37:01,639 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:37:01,639 INFO L168 Benchmark]: Toolchain (without parser) took 2540.69 ms. Allocated memory was 218.1 MB in the beginning and 316.7 MB in the end (delta: 98.6 MB). Free memory was 181.6 MB in the beginning and 146.1 MB in the end (delta: 35.5 MB). Peak memory consumption was 135.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,640 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 218.1 MB. Free memory is still 199.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:01,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.90 ms. Allocated memory is still 218.1 MB. Free memory was 181.4 MB in the beginning and 181.1 MB in the end (delta: 341.6 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 218.1 MB. Free memory was 181.1 MB in the beginning and 178.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,640 INFO L168 Benchmark]: Boogie Preprocessor took 24.30 ms. Allocated memory is still 218.1 MB. Free memory was 178.9 MB in the beginning and 177.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,641 INFO L168 Benchmark]: RCFGBuilder took 315.59 ms. Allocated memory is still 218.1 MB. Free memory was 177.4 MB in the beginning and 152.7 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,641 INFO L168 Benchmark]: TraceAbstraction took 1798.21 ms. Allocated memory was 218.1 MB in the beginning and 316.7 MB in the end (delta: 98.6 MB). Free memory was 152.7 MB in the beginning and 146.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 106.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:01,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 218.1 MB. Free memory is still 199.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.90 ms. Allocated memory is still 218.1 MB. Free memory was 181.4 MB in the beginning and 181.1 MB in the end (delta: 341.6 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.02 ms. Allocated memory is still 218.1 MB. Free memory was 181.1 MB in the beginning and 178.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.30 ms. Allocated memory is still 218.1 MB. Free memory was 178.9 MB in the beginning and 177.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 315.59 ms. Allocated memory is still 218.1 MB. Free memory was 177.4 MB in the beginning and 152.7 MB in the end (delta: 24.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1798.21 ms. Allocated memory was 218.1 MB in the beginning and 316.7 MB in the end (delta: 98.6 MB). Free memory was 152.7 MB in the beginning and 146.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 106.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1735.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 879.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 118 SDslu, 206 SDs, 0 SdLazy, 263 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 156.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 529.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=4, InterpolantAutomatonStates: 55, 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: 36.6ms SsaConstructionTime, 153.7ms SatisfiabilityAnalysisTime, 504.1ms InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 338 ConstructedInterpolants, 0 QuantifiedInterpolants, 1146 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...