/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:07:34,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:07:34,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:07:34,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:07:34,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:07:34,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:07:34,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:07:34,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:07:34,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:07:34,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:07:34,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:07:34,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:07:34,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:07:34,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:07:34,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:07:34,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:07:34,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:07:34,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:07:34,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:07:34,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:07:34,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:07:34,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:07:34,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:07:34,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:07:34,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:07:34,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:07:34,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:07:34,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:07:34,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:07:34,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:07:34,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:07:34,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:07:34,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:07:34,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:07:34,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:07:34,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:07:34,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:07:34,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:07:34,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:07:34,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:07:34,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:07:34,467 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-VariableLbe.epf [2021-03-24 11:07:34,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:07:34,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:07:34,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:07:34,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:07:34,498 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:07:34,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:07:34,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:07:34,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:07:34,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:07:34,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:07:34,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:07:34,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:07:34,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:07:34,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:07:34,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:07:34,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:07:34,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:07:34,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:07:34,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:07:34,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:07:34,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:07:34,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:07:34,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:07:34,820 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:07:34,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2021-03-24 11:07:34,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0789932c/bd17a5b0aa99454bbd75663e454d9a9a/FLAG6fa8f10a5 [2021-03-24 11:07:35,480 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:07:35,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i [2021-03-24 11:07:35,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0789932c/bd17a5b0aa99454bbd75663e454d9a9a/FLAG6fa8f10a5 [2021-03-24 11:07:35,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0789932c/bd17a5b0aa99454bbd75663e454d9a9a [2021-03-24 11:07:35,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:07:35,881 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:07:35,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:35,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:07:35,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:07:35,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:35" (1/1) ... [2021-03-24 11:07:35,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bbcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:35, skipping insertion in model container [2021-03-24 11:07:35,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:07:35" (1/1) ... [2021-03-24 11:07:35,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:07:35,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:07:36,036 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i[949,962] [2021-03-24 11:07:36,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:36,190 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:07:36,205 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.opt.i[949,962] [2021-03-24 11:07:36,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:07:36,318 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:07:36,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36 WrapperNode [2021-03-24 11:07:36,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:07:36,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:36,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:07:36,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:07:36,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:07:36,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:07:36,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:07:36,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:07:36,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... [2021-03-24 11:07:36,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:07:36,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:07:36,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:07:36,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:07:36,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:07:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:07:36,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:07:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:07:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:07:36,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:07:36,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:07:36,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:07:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:07:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:07:36,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:07:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:07:36,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:07:36,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:07:36,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:07:36,469 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:07:36,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:07:36,705 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:07:36,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:36 BoogieIcfgContainer [2021-03-24 11:07:36,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:07:36,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:07:36,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:07:36,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:07:36,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:07:35" (1/3) ... [2021-03-24 11:07:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b89d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:36, skipping insertion in model container [2021-03-24 11:07:36,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:07:36" (2/3) ... [2021-03-24 11:07:36,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b89d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:07:36, skipping insertion in model container [2021-03-24 11:07:36,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:07:36" (3/3) ... [2021-03-24 11:07:36,730 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.opt.i [2021-03-24 11:07:36,735 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:07:36,738 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:07:36,739 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:07:36,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,825 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,825 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,840 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,841 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,841 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,841 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,843 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,843 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,843 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,843 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:07:36,845 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:07:36,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:07:36,895 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:07:36,895 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:07:36,896 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:07:36,896 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:07:36,896 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:07:36,896 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:07:36,896 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:07:36,896 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:07:36,909 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 11:07:36,983 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-24 11:07:36,984 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:36,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:07:36,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-24 11:07:36,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-24 11:07:36,998 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:07:37,005 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 11:07:37,014 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-24 11:07:37,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-24 11:07:37,040 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-24 11:07:37,041 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:37,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 11:07:37,044 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:07:38,146 INFO L154 LiptonReduction]: Checked pairs total: 1194 [2021-03-24 11:07:38,147 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-24 11:07:38,149 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1152 [2021-03-24 11:07:38,156 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-24 11:07:38,157 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:38,157 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:38,157 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:38,158 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:38,162 INFO L82 PathProgramCache]: Analyzing trace with hash -2108135213, now seen corresponding path program 1 times [2021-03-24 11:07:38,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:38,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426971799] [2021-03-24 11:07:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:38,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:38,426 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:07:38,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:38,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:38,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426971799] [2021-03-24 11:07:38,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:38,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:38,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522065830] [2021-03-24 11:07:38,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:38,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:38,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:38,461 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2021-03-24 11:07:38,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:38,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2021-03-24 11:07:38,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:38,529 INFO L129 PetriNetUnfolder]: 119/279 cut-off events. [2021-03-24 11:07:38,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:07:38,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 279 events. 119/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1473 event pairs, 30 based on Foata normal form. 27/299 useless extension candidates. Maximal degree in co-relation 500. Up to 96 conditions per place. [2021-03-24 11:07:38,533 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 8 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-24 11:07:38,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 135 flow [2021-03-24 11:07:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2021-03-24 11:07:38,545 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7842105263157895 [2021-03-24 11:07:38,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2021-03-24 11:07:38,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2021-03-24 11:07:38,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:38,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2021-03-24 11:07:38,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,560 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 447 transitions. [2021-03-24 11:07:38,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 135 flow [2021-03-24 11:07:38,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:38,564 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-24 11:07:38,566 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-24 11:07:38,567 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-24 11:07:38,567 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 108 flow [2021-03-24 11:07:38,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,567 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:38,567 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:38,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:07:38,568 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:38,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:38,568 INFO L82 PathProgramCache]: Analyzing trace with hash -927709485, now seen corresponding path program 1 times [2021-03-24 11:07:38,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:38,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133810318] [2021-03-24 11:07:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:38,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:38,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,616 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:07:38,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:38,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:38,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133810318] [2021-03-24 11:07:38,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:38,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:38,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604943343] [2021-03-24 11:07:38,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:38,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:38,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:38,631 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2021-03-24 11:07:38,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:38,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2021-03-24 11:07:38,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:38,689 INFO L129 PetriNetUnfolder]: 84/225 cut-off events. [2021-03-24 11:07:38,689 INFO L130 PetriNetUnfolder]: For 216/260 co-relation queries the response was YES. [2021-03-24 11:07:38,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 225 events. 84/225 cut-off events. For 216/260 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1138 event pairs, 8 based on Foata normal form. 19/240 useless extension candidates. Maximal degree in co-relation 717. Up to 82 conditions per place. [2021-03-24 11:07:38,694 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 10 selfloop transitions, 10 changer transitions 12/45 dead transitions. [2021-03-24 11:07:38,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 284 flow [2021-03-24 11:07:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 621 transitions. [2021-03-24 11:07:38,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7781954887218046 [2021-03-24 11:07:38,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 621 transitions. [2021-03-24 11:07:38,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 621 transitions. [2021-03-24 11:07:38,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:38,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 621 transitions. [2021-03-24 11:07:38,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,706 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 108 flow. Second operand 7 states and 621 transitions. [2021-03-24 11:07:38,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 284 flow [2021-03-24 11:07:38,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:38,711 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 168 flow [2021-03-24 11:07:38,712 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-24 11:07:38,712 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 11:07:38,712 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 168 flow [2021-03-24 11:07:38,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:38,713 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:38,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:07:38,714 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:38,714 INFO L82 PathProgramCache]: Analyzing trace with hash -928190946, now seen corresponding path program 1 times [2021-03-24 11:07:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:38,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186150608] [2021-03-24 11:07:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:38,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:38,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,821 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 11:07:38,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 11:07:38,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:38,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186150608] [2021-03-24 11:07:38,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:38,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:38,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773337776] [2021-03-24 11:07:38,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:38,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:38,841 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 114 [2021-03-24 11:07:38,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:38,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 114 [2021-03-24 11:07:38,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:38,918 INFO L129 PetriNetUnfolder]: 69/202 cut-off events. [2021-03-24 11:07:38,918 INFO L130 PetriNetUnfolder]: For 709/768 co-relation queries the response was YES. [2021-03-24 11:07:38,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 202 events. 69/202 cut-off events. For 709/768 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1034 event pairs, 10 based on Foata normal form. 28/228 useless extension candidates. Maximal degree in co-relation 741. Up to 70 conditions per place. [2021-03-24 11:07:38,925 INFO L132 encePairwiseOnDemand]: 106/114 looper letters, 12 selfloop transitions, 12 changer transitions 13/50 dead transitions. [2021-03-24 11:07:38,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 375 flow [2021-03-24 11:07:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2021-03-24 11:07:38,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7756892230576441 [2021-03-24 11:07:38,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2021-03-24 11:07:38,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2021-03-24 11:07:38,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:38,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2021-03-24 11:07:38,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,933 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,933 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 168 flow. Second operand 7 states and 619 transitions. [2021-03-24 11:07:38,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 375 flow [2021-03-24 11:07:38,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 355 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:38,946 INFO L241 Difference]: Finished difference. Result has 49 places, 36 transitions, 256 flow [2021-03-24 11:07:38,946 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=256, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2021-03-24 11:07:38,947 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-24 11:07:38,947 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 256 flow [2021-03-24 11:07:38,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:38,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:38,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:07:38,947 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1282031274, now seen corresponding path program 1 times [2021-03-24 11:07:38,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:38,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087779040] [2021-03-24 11:07:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:38,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:38,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:38,987 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:38,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:38,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:38,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:38,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087779040] [2021-03-24 11:07:38,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:38,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:38,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994932279] [2021-03-24 11:07:38,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:38,996 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 11:07:38,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:38,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:38,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 11:07:38,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:39,052 INFO L129 PetriNetUnfolder]: 130/326 cut-off events. [2021-03-24 11:07:39,052 INFO L130 PetriNetUnfolder]: For 856/912 co-relation queries the response was YES. [2021-03-24 11:07:39,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 326 events. 130/326 cut-off events. For 856/912 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1880 event pairs, 35 based on Foata normal form. 53/364 useless extension candidates. Maximal degree in co-relation 1000. Up to 165 conditions per place. [2021-03-24 11:07:39,055 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 8 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2021-03-24 11:07:39,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 308 flow [2021-03-24 11:07:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-24 11:07:39,057 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7771929824561403 [2021-03-24 11:07:39,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-24 11:07:39,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-24 11:07:39,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:39,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-24 11:07:39,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,060 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,060 INFO L185 Difference]: Start difference. First operand has 49 places, 36 transitions, 256 flow. Second operand 5 states and 443 transitions. [2021-03-24 11:07:39,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 308 flow [2021-03-24 11:07:39,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 298 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:39,066 INFO L241 Difference]: Finished difference. Result has 51 places, 43 transitions, 306 flow [2021-03-24 11:07:39,066 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2021-03-24 11:07:39,066 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2021-03-24 11:07:39,066 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 306 flow [2021-03-24 11:07:39,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,067 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:39,067 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:39,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:07:39,067 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:39,068 INFO L82 PathProgramCache]: Analyzing trace with hash -677347563, now seen corresponding path program 1 times [2021-03-24 11:07:39,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:39,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996287704] [2021-03-24 11:07:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:39,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,128 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:39,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:39,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:39,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996287704] [2021-03-24 11:07:39,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:39,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:07:39,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331262069] [2021-03-24 11:07:39,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:39,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:39,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:39,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:39,137 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 11:07:39,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:39,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 11:07:39,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:39,215 INFO L129 PetriNetUnfolder]: 81/247 cut-off events. [2021-03-24 11:07:39,215 INFO L130 PetriNetUnfolder]: For 888/1121 co-relation queries the response was YES. [2021-03-24 11:07:39,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 247 events. 81/247 cut-off events. For 888/1121 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1465 event pairs, 5 based on Foata normal form. 138/375 useless extension candidates. Maximal degree in co-relation 974. Up to 153 conditions per place. [2021-03-24 11:07:39,218 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 5 selfloop transitions, 15 changer transitions 3/53 dead transitions. [2021-03-24 11:07:39,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 410 flow [2021-03-24 11:07:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:07:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:07:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-03-24 11:07:39,220 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7769423558897243 [2021-03-24 11:07:39,220 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-03-24 11:07:39,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-03-24 11:07:39,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:39,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-03-24 11:07:39,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 114.0) internal successors, (912), 8 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,224 INFO L185 Difference]: Start difference. First operand has 51 places, 43 transitions, 306 flow. Second operand 7 states and 620 transitions. [2021-03-24 11:07:39,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 410 flow [2021-03-24 11:07:39,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 402 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:39,230 INFO L241 Difference]: Finished difference. Result has 58 places, 50 transitions, 397 flow [2021-03-24 11:07:39,230 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2021-03-24 11:07:39,231 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2021-03-24 11:07:39,231 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 397 flow [2021-03-24 11:07:39,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,232 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:39,232 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:39,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:07:39,232 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1178285045, now seen corresponding path program 1 times [2021-03-24 11:07:39,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270330077] [2021-03-24 11:07:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:39,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:39,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270330077] [2021-03-24 11:07:39,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:07:39,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166795472] [2021-03-24 11:07:39,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:07:39,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:07:39,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:07:39,310 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 114 [2021-03-24 11:07:39,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:39,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 114 [2021-03-24 11:07:39,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:39,374 INFO L129 PetriNetUnfolder]: 99/318 cut-off events. [2021-03-24 11:07:39,375 INFO L130 PetriNetUnfolder]: For 1446/1668 co-relation queries the response was YES. [2021-03-24 11:07:39,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 318 events. 99/318 cut-off events. For 1446/1668 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2123 event pairs, 7 based on Foata normal form. 26/327 useless extension candidates. Maximal degree in co-relation 1398. Up to 199 conditions per place. [2021-03-24 11:07:39,378 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 8 selfloop transitions, 2 changer transitions 4/56 dead transitions. [2021-03-24 11:07:39,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 478 flow [2021-03-24 11:07:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:07:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:07:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 461 transitions. [2021-03-24 11:07:39,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8087719298245614 [2021-03-24 11:07:39,380 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 461 transitions. [2021-03-24 11:07:39,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 461 transitions. [2021-03-24 11:07:39,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:39,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 461 transitions. [2021-03-24 11:07:39,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.2) internal successors, (461), 5 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,383 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,383 INFO L185 Difference]: Start difference. First operand has 58 places, 50 transitions, 397 flow. Second operand 5 states and 461 transitions. [2021-03-24 11:07:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 478 flow [2021-03-24 11:07:39,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 439 flow, removed 15 selfloop flow, removed 3 redundant places. [2021-03-24 11:07:39,392 INFO L241 Difference]: Finished difference. Result has 62 places, 49 transitions, 360 flow [2021-03-24 11:07:39,392 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2021-03-24 11:07:39,392 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2021-03-24 11:07:39,392 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 360 flow [2021-03-24 11:07:39,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,393 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:39,393 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:39,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:07:39,393 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:39,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:39,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1501889640, now seen corresponding path program 1 times [2021-03-24 11:07:39,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:39,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096585738] [2021-03-24 11:07:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:39,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:39,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096585738] [2021-03-24 11:07:39,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:39,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:07:39,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177666910] [2021-03-24 11:07:39,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:07:39,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:39,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:07:39,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:07:39,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 114 [2021-03-24 11:07:39,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:39,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 114 [2021-03-24 11:07:39,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:39,493 INFO L129 PetriNetUnfolder]: 107/355 cut-off events. [2021-03-24 11:07:39,493 INFO L130 PetriNetUnfolder]: For 953/1003 co-relation queries the response was YES. [2021-03-24 11:07:39,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 355 events. 107/355 cut-off events. For 953/1003 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 2569 event pairs, 9 based on Foata normal form. 12/344 useless extension candidates. Maximal degree in co-relation 1254. Up to 99 conditions per place. [2021-03-24 11:07:39,496 INFO L132 encePairwiseOnDemand]: 110/114 looper letters, 6 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2021-03-24 11:07:39,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 408 flow [2021-03-24 11:07:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:07:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:07:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2021-03-24 11:07:39,498 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8355263157894737 [2021-03-24 11:07:39,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2021-03-24 11:07:39,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2021-03-24 11:07:39,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:39,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2021-03-24 11:07:39,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,500 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,500 INFO L185 Difference]: Start difference. First operand has 62 places, 49 transitions, 360 flow. Second operand 4 states and 381 transitions. [2021-03-24 11:07:39,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 408 flow [2021-03-24 11:07:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 403 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 11:07:39,506 INFO L241 Difference]: Finished difference. Result has 64 places, 49 transitions, 376 flow [2021-03-24 11:07:39,506 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2021-03-24 11:07:39,506 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-24 11:07:39,507 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 376 flow [2021-03-24 11:07:39,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,507 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:07:39,507 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:07:39,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:07:39,507 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:07:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:07:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash 628127790, now seen corresponding path program 2 times [2021-03-24 11:07:39,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:07:39,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183081659] [2021-03-24 11:07:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:07:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:07:39,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:07:39,546 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 11:07:39,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 11:07:39,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:07:39,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:07:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:07:39,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183081659] [2021-03-24 11:07:39,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:07:39,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:07:39,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552942079] [2021-03-24 11:07:39,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:07:39,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:07:39,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:07:39,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:07:39,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 114 [2021-03-24 11:07:39,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:07:39,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 114 [2021-03-24 11:07:39,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:07:39,652 INFO L129 PetriNetUnfolder]: 100/335 cut-off events. [2021-03-24 11:07:39,652 INFO L130 PetriNetUnfolder]: For 1286/1780 co-relation queries the response was YES. [2021-03-24 11:07:39,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 335 events. 100/335 cut-off events. For 1286/1780 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 2438 event pairs, 3 based on Foata normal form. 227/539 useless extension candidates. Maximal degree in co-relation 1425. Up to 110 conditions per place. [2021-03-24 11:07:39,655 INFO L132 encePairwiseOnDemand]: 108/114 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2021-03-24 11:07:39,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 51 transitions, 426 flow [2021-03-24 11:07:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:07:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:07:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 789 transitions. [2021-03-24 11:07:39,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7690058479532164 [2021-03-24 11:07:39,658 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 789 transitions. [2021-03-24 11:07:39,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 789 transitions. [2021-03-24 11:07:39,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:07:39,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 789 transitions. [2021-03-24 11:07:39,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.66666666666667) internal successors, (789), 9 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,662 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 114.0) internal successors, (1140), 10 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,662 INFO L185 Difference]: Start difference. First operand has 64 places, 49 transitions, 376 flow. Second operand 9 states and 789 transitions. [2021-03-24 11:07:39,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 51 transitions, 426 flow [2021-03-24 11:07:39,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 380 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-24 11:07:39,667 INFO L241 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2021-03-24 11:07:39,667 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2021-03-24 11:07:39,668 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2021-03-24 11:07:39,668 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2021-03-24 11:07:39,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 85.83333333333333) internal successors, (515), 6 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:07:39,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:07:39,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:07:39 BasicIcfg [2021-03-24 11:07:39,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:07:39,676 INFO L168 Benchmark]: Toolchain (without parser) took 3792.36 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.6 MB in the beginning and 282.8 MB in the end (delta: -48.2 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,677 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:07:39,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.95 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.6 MB in the beginning and 329.4 MB in the end (delta: -94.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,678 INFO L168 Benchmark]: Boogie Preprocessor took 38.68 ms. Allocated memory is still 367.0 MB. Free memory was 327.2 MB in the beginning and 325.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,679 INFO L168 Benchmark]: RCFGBuilder took 301.99 ms. Allocated memory is still 367.0 MB. Free memory was 325.9 MB in the beginning and 303.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,682 INFO L168 Benchmark]: TraceAbstraction took 2964.41 ms. Allocated memory is still 367.0 MB. Free memory was 303.5 MB in the beginning and 282.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.0 GB. [2021-03-24 11:07:39,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 439.95 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 234.6 MB in the beginning and 329.4 MB in the end (delta: -94.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 367.0 MB. Free memory was 329.4 MB in the beginning and 327.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 38.68 ms. Allocated memory is still 367.0 MB. Free memory was 327.2 MB in the beginning and 325.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 301.99 ms. Allocated memory is still 367.0 MB. Free memory was 325.9 MB in the beginning and 303.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2964.41 ms. Allocated memory is still 367.0 MB. Free memory was 303.5 MB in the beginning and 282.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1133.1ms, 68 PlacesBefore, 31 PlacesAfterwards, 59 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 1194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 724, positive: 685, positive conditional: 0, positive unconditional: 685, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 462, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 462, positive: 438, positive conditional: 0, positive unconditional: 438, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 724, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 462, unknown conditional: 0, unknown unconditional: 462] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2779.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 723.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1256.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 54 SDslu, 67 SDs, 0 SdLazy, 142 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 182.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=397occurred in iteration=5, InterpolantAutomatonStates: 49, 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: 24.9ms SsaConstructionTime, 189.3ms SatisfiabilityAnalysisTime, 412.3ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...