/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:59:45,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:59:45,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:59:45,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:59:45,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:59:45,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:59:45,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:59:45,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:59:45,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:59:45,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:59:45,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:59:45,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:59:45,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:59:45,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:59:45,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:59:45,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:59:45,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:59:45,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:59:45,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:59:45,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:59:45,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:59:45,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:59:45,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:59:45,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:59:45,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 19:59:45,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 19:59:45,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 19:59:45,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 19:59:45,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 19:59:45,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 19:59:45,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 19:59:45,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 19:59:45,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 19:59:45,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 19:59:45,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 19:59:45,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 19:59:45,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 19:59:45,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 19:59:45,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:59:45,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:59:45,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:59:45,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:59:45,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:59:45,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:59:45,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:59:45,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:59:45,570 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:59:45,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:59:45,571 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:59:45,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:59:45,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:59:45,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:59:45,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:59:45,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:59:45,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:59:45,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:59:45,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:59:45,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:59:45,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:59:45,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:59:45,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:59:45,804 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:59:45,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-24 19:59:45,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358817de9/6ff4647942964bbcb95938baabb1ee1a/FLAG52074fadc [2021-03-24 19:59:46,243 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:59:46,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_tso.opt.i [2021-03-24 19:59:46,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358817de9/6ff4647942964bbcb95938baabb1ee1a/FLAG52074fadc [2021-03-24 19:59:46,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358817de9/6ff4647942964bbcb95938baabb1ee1a [2021-03-24 19:59:46,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:59:46,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:59:46,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:59:46,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:59:46,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:59:46,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d9f22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46, skipping insertion in model container [2021-03-24 19:59:46,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:59:46,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:59:46,728 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/thin002_tso.opt.i[949,962] [2021-03-24 19:59:46,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:59:46,855 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:59:46,862 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/thin002_tso.opt.i[949,962] [2021-03-24 19:59:46,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:59:46,919 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:59:46,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46 WrapperNode [2021-03-24 19:59:46,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:59:46,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:59:46,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:59:46,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:59:46,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:59:46,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:59:46,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:59:46,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:59:46,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... [2021-03-24 19:59:46,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:59:46,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:59:46,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:59:46,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:59:46,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:59:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:59:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:59:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:59:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:59:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:59:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:59:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:59:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-24 19:59:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:59:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:59:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:59:47,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:59:47,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:59:47,290 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 19:59:47,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:59:47 BoogieIcfgContainer [2021-03-24 19:59:47,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:59:47,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:59:47,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:59:47,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:59:47,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:59:46" (1/3) ... [2021-03-24 19:59:47,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3114a4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:59:47, skipping insertion in model container [2021-03-24 19:59:47,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:59:46" (2/3) ... [2021-03-24 19:59:47,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3114a4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:59:47, skipping insertion in model container [2021-03-24 19:59:47,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:59:47" (3/3) ... [2021-03-24 19:59:47,296 INFO L111 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2021-03-24 19:59:47,300 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:59:47,303 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 19:59:47,303 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,322 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,323 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,324 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,325 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,326 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,327 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,328 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,328 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,328 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,328 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,329 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,329 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,330 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,333 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,333 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,333 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,334 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,334 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,335 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,336 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,336 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:59:47,337 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:59:47,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-24 19:59:47,362 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:59:47,362 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:59:47,362 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:59:47,362 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:59:47,363 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:59:47,363 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:59:47,363 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:59:47,363 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:59:47,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 19:59:47,417 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-03-24 19:59:47,418 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:59:47,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2021-03-24 19:59:47,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 91 transitions, 202 flow [2021-03-24 19:59:47,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 73 transitions, 158 flow [2021-03-24 19:59:47,435 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:59:47,444 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 19:59:47,448 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 73 transitions, 158 flow [2021-03-24 19:59:47,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 73 transitions, 158 flow [2021-03-24 19:59:47,468 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-24 19:59:47,468 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:59:47,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 19:59:47,471 INFO L142 LiptonReduction]: Number of co-enabled transitions 1392 [2021-03-24 19:59:48,723 INFO L154 LiptonReduction]: Checked pairs total: 1938 [2021-03-24 19:59:48,724 INFO L156 LiptonReduction]: Total number of compositions: 46 [2021-03-24 19:59:48,725 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1291 [2021-03-24 19:59:48,732 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2021-03-24 19:59:48,733 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:59:48,733 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:48,733 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:48,733 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1692446056, now seen corresponding path program 1 times [2021-03-24 19:59:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:48,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738924872] [2021-03-24 19:59:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:48,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:48,939 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:59:48,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:59:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:48,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738924872] [2021-03-24 19:59:48,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:48,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:59:48,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316980104] [2021-03-24 19:59:48,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:59:48,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:48,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:59:48,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:59:48,969 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 19:59:48,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 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 19:59:48,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:48,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 19:59:48,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,012 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2021-03-24 19:59:49,012 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:59:49,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 141 events. 45/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 606 event pairs, 23 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 216. Up to 76 conditions per place. [2021-03-24 19:59:49,015 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 6 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-24 19:59:49,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 96 flow [2021-03-24 19:59:49,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:59:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:59:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-03-24 19:59:49,027 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8467153284671532 [2021-03-24 19:59:49,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-03-24 19:59:49,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-03-24 19:59:49,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-03-24 19:59:49,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,042 INFO L185 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 348 transitions. [2021-03-24 19:59:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 96 flow [2021-03-24 19:59:49,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-24 19:59:49,045 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 95 flow [2021-03-24 19:59:49,046 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-03-24 19:59:49,047 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2021-03-24 19:59:49,047 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 95 flow [2021-03-24 19:59:49,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 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 19:59:49,047 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,047 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:59:49,047 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2088650593, now seen corresponding path program 1 times [2021-03-24 19:59:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531601143] [2021-03-24 19:59:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531601143] [2021-03-24 19:59:49,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:59:49,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905142726] [2021-03-24 19:59:49,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:59:49,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:59:49,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:59:49,114 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 137 [2021-03-24 19:59:49,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 137 [2021-03-24 19:59:49,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,139 INFO L129 PetriNetUnfolder]: 29/102 cut-off events. [2021-03-24 19:59:49,140 INFO L130 PetriNetUnfolder]: For 25/58 co-relation queries the response was YES. [2021-03-24 19:59:49,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 102 events. 29/102 cut-off events. For 25/58 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 373 event pairs, 14 based on Foata normal form. 2/93 useless extension candidates. Maximal degree in co-relation 174. Up to 53 conditions per place. [2021-03-24 19:59:49,141 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 1 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2021-03-24 19:59:49,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 103 flow [2021-03-24 19:59:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:59:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:59:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2021-03-24 19:59:49,142 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9148418491484185 [2021-03-24 19:59:49,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2021-03-24 19:59:49,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2021-03-24 19:59:49,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2021-03-24 19:59:49,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,145 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 95 flow. Second operand 3 states and 376 transitions. [2021-03-24 19:59:49,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 103 flow [2021-03-24 19:59:49,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:59:49,146 INFO L241 Difference]: Finished difference. Result has 41 places, 31 transitions, 101 flow [2021-03-24 19:59:49,146 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2021-03-24 19:59:49,146 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2021-03-24 19:59:49,146 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 101 flow [2021-03-24 19:59:49,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,147 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,147 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:59:49,147 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash -396236464, now seen corresponding path program 1 times [2021-03-24 19:59:49,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650391420] [2021-03-24 19:59:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650391420] [2021-03-24 19:59:49,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:59:49,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703125022] [2021-03-24 19:59:49,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:59:49,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:59:49,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:59:49,183 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 137 [2021-03-24 19:59:49,184 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,184 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 137 [2021-03-24 19:59:49,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,202 INFO L129 PetriNetUnfolder]: 25/106 cut-off events. [2021-03-24 19:59:49,202 INFO L130 PetriNetUnfolder]: For 90/333 co-relation queries the response was YES. [2021-03-24 19:59:49,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 106 events. 25/106 cut-off events. For 90/333 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 461 event pairs, 14 based on Foata normal form. 8/105 useless extension candidates. Maximal degree in co-relation 202. Up to 49 conditions per place. [2021-03-24 19:59:49,203 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 1 selfloop transitions, 4 changer transitions 2/32 dead transitions. [2021-03-24 19:59:49,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 122 flow [2021-03-24 19:59:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:59:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:59:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2021-03-24 19:59:49,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8832116788321168 [2021-03-24 19:59:49,205 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,208 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,208 INFO L185 Difference]: Start difference. First operand has 41 places, 31 transitions, 101 flow. Second operand 4 states and 484 transitions. [2021-03-24 19:59:49,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 122 flow [2021-03-24 19:59:49,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:59:49,209 INFO L241 Difference]: Finished difference. Result has 44 places, 30 transitions, 108 flow [2021-03-24 19:59:49,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2021-03-24 19:59:49,209 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2021-03-24 19:59:49,209 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 108 flow [2021-03-24 19:59:49,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,210 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,210 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 19:59:49,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:59:49,210 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash 993266873, now seen corresponding path program 1 times [2021-03-24 19:59:49,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869556265] [2021-03-24 19:59:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,240 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:59:49,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:59:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869556265] [2021-03-24 19:59:49,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:59:49,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983288439] [2021-03-24 19:59:49,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:59:49,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:59:49,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:59:49,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2021-03-24 19:59:49,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2021-03-24 19:59:49,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,261 INFO L129 PetriNetUnfolder]: 10/61 cut-off events. [2021-03-24 19:59:49,262 INFO L130 PetriNetUnfolder]: For 71/169 co-relation queries the response was YES. [2021-03-24 19:59:49,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 61 events. 10/61 cut-off events. For 71/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 170 event pairs, 2 based on Foata normal form. 3/62 useless extension candidates. Maximal degree in co-relation 127. Up to 24 conditions per place. [2021-03-24 19:59:49,262 INFO L132 encePairwiseOnDemand]: 134/137 looper letters, 10 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2021-03-24 19:59:49,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 150 flow [2021-03-24 19:59:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:59:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:59:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2021-03-24 19:59:49,263 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8442822384428224 [2021-03-24 19:59:49,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2021-03-24 19:59:49,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2021-03-24 19:59:49,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2021-03-24 19:59:49,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,266 INFO L185 Difference]: Start difference. First operand has 44 places, 30 transitions, 108 flow. Second operand 3 states and 347 transitions. [2021-03-24 19:59:49,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 150 flow [2021-03-24 19:59:49,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 134 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 19:59:49,267 INFO L241 Difference]: Finished difference. Result has 43 places, 30 transitions, 105 flow [2021-03-24 19:59:49,267 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2021-03-24 19:59:49,267 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2021-03-24 19:59:49,267 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 105 flow [2021-03-24 19:59:49,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,268 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,268 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:59:49,268 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,268 INFO L82 PathProgramCache]: Analyzing trace with hash 361251632, now seen corresponding path program 1 times [2021-03-24 19:59:49,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315479417] [2021-03-24 19:59:49,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,295 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:59:49,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:59:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315479417] [2021-03-24 19:59:49,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:59:49,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360818179] [2021-03-24 19:59:49,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:59:49,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:59:49,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:59:49,304 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 19:59:49,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 19:59:49,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,331 INFO L129 PetriNetUnfolder]: 18/91 cut-off events. [2021-03-24 19:59:49,332 INFO L130 PetriNetUnfolder]: For 91/283 co-relation queries the response was YES. [2021-03-24 19:59:49,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 91 events. 18/91 cut-off events. For 91/283 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 368 event pairs, 2 based on Foata normal form. 10/99 useless extension candidates. Maximal degree in co-relation 203. Up to 37 conditions per place. [2021-03-24 19:59:49,332 INFO L132 encePairwiseOnDemand]: 129/137 looper letters, 9 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2021-03-24 19:59:49,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 184 flow [2021-03-24 19:59:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:59:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:59:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-03-24 19:59:49,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102189781021898 [2021-03-24 19:59:49,334 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-03-24 19:59:49,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-03-24 19:59:49,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-03-24 19:59:49,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,337 INFO L185 Difference]: Start difference. First operand has 43 places, 30 transitions, 105 flow. Second operand 5 states and 555 transitions. [2021-03-24 19:59:49,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 184 flow [2021-03-24 19:59:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:59:49,338 INFO L241 Difference]: Finished difference. Result has 48 places, 36 transitions, 179 flow [2021-03-24 19:59:49,338 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2021-03-24 19:59:49,339 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2021-03-24 19:59:49,339 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 179 flow [2021-03-24 19:59:49,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,339 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,339 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:59:49,339 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2130438990, now seen corresponding path program 2 times [2021-03-24 19:59:49,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572997755] [2021-03-24 19:59:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572997755] [2021-03-24 19:59:49,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:59:49,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827956759] [2021-03-24 19:59:49,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:59:49,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:59:49,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:59:49,368 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 137 [2021-03-24 19:59:49,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 137 [2021-03-24 19:59:49,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,392 INFO L129 PetriNetUnfolder]: 12/86 cut-off events. [2021-03-24 19:59:49,393 INFO L130 PetriNetUnfolder]: For 226/411 co-relation queries the response was YES. [2021-03-24 19:59:49,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 86 events. 12/86 cut-off events. For 226/411 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 368 event pairs, 4 based on Foata normal form. 6/90 useless extension candidates. Maximal degree in co-relation 220. Up to 33 conditions per place. [2021-03-24 19:59:49,393 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 1 selfloop transitions, 4 changer transitions 7/36 dead transitions. [2021-03-24 19:59:49,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 195 flow [2021-03-24 19:59:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:59:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:59:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2021-03-24 19:59:49,395 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8832116788321168 [2021-03-24 19:59:49,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2021-03-24 19:59:49,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,398 INFO L185 Difference]: Start difference. First operand has 48 places, 36 transitions, 179 flow. Second operand 4 states and 484 transitions. [2021-03-24 19:59:49,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 195 flow [2021-03-24 19:59:49,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 36 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 19:59:49,402 INFO L241 Difference]: Finished difference. Result has 52 places, 29 transitions, 142 flow [2021-03-24 19:59:49,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=52, PETRI_TRANSITIONS=29} [2021-03-24 19:59:49,402 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2021-03-24 19:59:49,402 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 29 transitions, 142 flow [2021-03-24 19:59:49,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:59:49,403 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash 869397468, now seen corresponding path program 1 times [2021-03-24 19:59:49,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939420212] [2021-03-24 19:59:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,448 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:59:49,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:59:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939420212] [2021-03-24 19:59:49,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:59:49,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40530312] [2021-03-24 19:59:49,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:59:49,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:59:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:59:49,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2021-03-24 19:59:49,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 29 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2021-03-24 19:59:49,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,481 INFO L129 PetriNetUnfolder]: 5/54 cut-off events. [2021-03-24 19:59:49,481 INFO L130 PetriNetUnfolder]: For 162/171 co-relation queries the response was YES. [2021-03-24 19:59:49,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 54 events. 5/54 cut-off events. For 162/171 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 2 based on Foata normal form. 3/56 useless extension candidates. Maximal degree in co-relation 143. Up to 17 conditions per place. [2021-03-24 19:59:49,481 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 4 selfloop transitions, 4 changer transitions 7/34 dead transitions. [2021-03-24 19:59:49,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 34 transitions, 214 flow [2021-03-24 19:59:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 19:59:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 19:59:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2021-03-24 19:59:49,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8302919708029197 [2021-03-24 19:59:49,483 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2021-03-24 19:59:49,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2021-03-24 19:59:49,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2021-03-24 19:59:49,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 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 19:59:49,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,485 INFO L185 Difference]: Start difference. First operand has 52 places, 29 transitions, 142 flow. Second operand 4 states and 455 transitions. [2021-03-24 19:59:49,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 34 transitions, 214 flow [2021-03-24 19:59:49,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 150 flow, removed 15 selfloop flow, removed 11 redundant places. [2021-03-24 19:59:49,486 INFO L241 Difference]: Finished difference. Result has 46 places, 27 transitions, 104 flow [2021-03-24 19:59:49,486 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2021-03-24 19:59:49,486 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2021-03-24 19:59:49,486 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 104 flow [2021-03-24 19:59:49,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,486 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:59:49,486 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:59:49,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:59:49,487 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:59:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:59:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1545391290, now seen corresponding path program 1 times [2021-03-24 19:59:49,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:59:49,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689572650] [2021-03-24 19:59:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:59:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:59:49,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:59:49,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:59:49,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:59:49,532 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 19:59:49,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:59:49,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:59:49,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689572650] [2021-03-24 19:59:49,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:59:49,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:59:49,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473071361] [2021-03-24 19:59:49,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:59:49,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:59:49,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:59:49,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:59:49,547 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 137 [2021-03-24 19:59:49,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:59:49,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 137 [2021-03-24 19:59:49,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:59:49,558 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-03-24 19:59:49,558 INFO L130 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2021-03-24 19:59:49,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 26 events. 0/26 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-03-24 19:59:49,559 INFO L132 encePairwiseOnDemand]: 132/137 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 19:59:49,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 26 transitions, 110 flow [2021-03-24 19:59:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:59:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:59:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-03-24 19:59:49,561 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7956204379562044 [2021-03-24 19:59:49,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-03-24 19:59:49,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-03-24 19:59:49,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:59:49,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-03-24 19:59:49,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,566 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,566 INFO L185 Difference]: Start difference. First operand has 46 places, 27 transitions, 104 flow. Second operand 5 states and 545 transitions. [2021-03-24 19:59:49,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 26 transitions, 110 flow [2021-03-24 19:59:49,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-24 19:59:49,568 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-24 19:59:49,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-24 19:59:49,568 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2021-03-24 19:59:49,568 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-24 19:59:49,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:59:49,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:59:49,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:59:49 BasicIcfg [2021-03-24 19:59:49,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:59:49,573 INFO L168 Benchmark]: Toolchain (without parser) took 2990.66 ms. Allocated memory was 255.9 MB in the beginning and 438.3 MB in the end (delta: 182.5 MB). Free memory was 235.1 MB in the beginning and 302.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 114.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,574 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:59:49,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.60 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.7 MB in the beginning and 328.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 364.9 MB. Free memory was 328.0 MB in the beginning and 325.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,578 INFO L168 Benchmark]: Boogie Preprocessor took 13.63 ms. Allocated memory is still 364.9 MB. Free memory was 325.9 MB in the beginning and 324.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,578 INFO L168 Benchmark]: RCFGBuilder took 324.92 ms. Allocated memory is still 364.9 MB. Free memory was 324.3 MB in the beginning and 299.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,580 INFO L168 Benchmark]: TraceAbstraction took 2278.48 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.2 MB in the beginning and 302.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:59:49,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 337.60 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 234.7 MB in the beginning and 328.0 MB in the end (delta: -93.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.49 ms. Allocated memory is still 364.9 MB. Free memory was 328.0 MB in the beginning and 325.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.63 ms. Allocated memory is still 364.9 MB. Free memory was 325.9 MB in the beginning and 324.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 324.92 ms. Allocated memory is still 364.9 MB. Free memory was 324.3 MB in the beginning and 299.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2278.48 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.2 MB in the beginning and 302.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 71.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1276.2ms, 85 PlacesBefore, 40 PlacesAfterwards, 73 TransitionsBefore, 27 TransitionsAfterwards, 1392 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 46 TotalNumberOfCompositions, 1938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1133, positive: 1081, positive conditional: 0, positive unconditional: 1081, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 882, positive: 846, positive conditional: 0, positive unconditional: 846, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 882, positive: 846, positive conditional: 0, positive unconditional: 846, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 882, positive: 835, positive conditional: 0, positive unconditional: 835, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 140, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1133, positive: 235, positive conditional: 0, positive unconditional: 235, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 882, unknown conditional: 0, unknown unconditional: 882] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, 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 5 procedures, 90 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2209.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 282.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1366.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 33 SDslu, 19 SDs, 0 SdLazy, 46 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=5, InterpolantAutomatonStates: 31, 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: 16.2ms SsaConstructionTime, 91.6ms SatisfiabilityAnalysisTime, 327.1ms InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 823 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...