/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:37:10,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:37:10,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:37:10,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:37:10,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:37:10,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:37:10,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:37:10,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:37:10,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:37:10,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:37:10,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:37:10,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:37:10,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:37:10,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:37:10,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:37:10,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:37:10,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:37:10,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:37:10,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:37:10,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:37:10,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:37:10,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:37:10,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:37:10,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:37:10,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 07:37:10,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 07:37:10,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 07:37:10,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 07:37:10,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 07:37:10,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 07:37:10,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:37:10,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:37:10,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:37:10,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:37:10,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:37:10,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:37:10,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:37:10,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:37:10,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:37:10,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:37:10,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:37:10,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:37:10,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:37:10,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:37:10,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:37:10,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:37:10,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:37:10,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:37:10,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:10,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:37:10,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:37:10,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:37:10,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:37:10,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:37:10,301 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:37:10,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:37:10,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:37:10,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:37:10,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:37:10,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:37:10,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:37:10,542 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:37:10,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i [2021-06-13 07:37:10,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f60e6d5b/c2a9c6b7fdaf4bfcaac0f43eda8acef1/FLAG23388bb36 [2021-06-13 07:37:11,011 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:37:11,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i [2021-06-13 07:37:11,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f60e6d5b/c2a9c6b7fdaf4bfcaac0f43eda8acef1/FLAG23388bb36 [2021-06-13 07:37:11,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f60e6d5b/c2a9c6b7fdaf4bfcaac0f43eda8acef1 [2021-06-13 07:37:11,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:37:11,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:37:11,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:11,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:37:11,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:37:11,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9998c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11, skipping insertion in model container [2021-06-13 07:37:11,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:37:11,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:37:11,250 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i[949,962] [2021-06-13 07:37:11,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:11,367 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:37:11,374 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.opt.i[949,962] [2021-06-13 07:37:11,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:37:11,453 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:37:11,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11 WrapperNode [2021-06-13 07:37:11,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:37:11,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:11,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:37:11,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:37:11,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:37:11,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:37:11,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:37:11,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:37:11,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... [2021-06-13 07:37:11,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:37:11,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:37:11,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:37:11,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:37:11,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:37:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:37:11,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:37:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:37:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:37:11,579 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:37:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:37:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:37:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:37:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:37:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:37:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:37:11,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:37:11,582 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:37:11,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:37:11,900 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:37:11,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:11 BoogieIcfgContainer [2021-06-13 07:37:11,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:37:11,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:37:11,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:37:11,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:37:11,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:37:11" (1/3) ... [2021-06-13 07:37:11,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc957b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:11, skipping insertion in model container [2021-06-13 07:37:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:37:11" (2/3) ... [2021-06-13 07:37:11,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc957b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:37:11, skipping insertion in model container [2021-06-13 07:37:11,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:37:11" (3/3) ... [2021-06-13 07:37:11,906 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.opt.i [2021-06-13 07:37:11,912 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:37:11,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:37:11,913 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:37:11,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,936 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,936 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,937 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,937 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,939 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,940 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,941 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,942 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,942 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,946 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,946 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:37:11,948 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:37:11,963 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 07:37:11,975 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:37:11,975 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:37:11,975 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:37:11,976 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:37:11,976 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:37:11,976 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:37:11,976 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:37:11,976 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:37:11,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:37:12,025 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-06-13 07:37:12,025 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:12,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-06-13 07:37:12,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:37:12,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-06-13 07:37:12,039 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-06-13 07:37:12,039 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:12,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:12,040 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:12,040 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:12,043 INFO L82 PathProgramCache]: Analyzing trace with hash -593502858, now seen corresponding path program 1 times [2021-06-13 07:37:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:12,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442057040] [2021-06-13 07:37:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:12,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:12,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:12,303 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:37:12,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,313 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:12,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:12,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:12,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:12,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442057040] [2021-06-13 07:37:12,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442057040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:12,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:12,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:12,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369290768] [2021-06-13 07:37:12,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:12,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:12,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:12,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:12,365 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:37:12,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:12,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:37:12,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:12,525 INFO L129 PetriNetUnfolder]: 20/113 cut-off events. [2021-06-13 07:37:12,526 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:37:12,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 113 events. 20/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 298 event pairs, 5 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 143. Up to 19 conditions per place. [2021-06-13 07:37:12,527 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 9 selfloop transitions, 2 changer transitions 16/71 dead transitions. [2021-06-13 07:37:12,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 202 flow [2021-06-13 07:37:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:37:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:37:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 508 transitions. [2021-06-13 07:37:12,543 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8424543946932007 [2021-06-13 07:37:12,543 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 508 transitions. [2021-06-13 07:37:12,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 508 transitions. [2021-06-13 07:37:12,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:12,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 508 transitions. [2021-06-13 07:37:12,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.44444444444444) internal successors, (508), 9 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,554 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,555 INFO L185 Difference]: Start difference. First operand has 61 places, 55 transitions, 116 flow. Second operand 9 states and 508 transitions. [2021-06-13 07:37:12,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 202 flow [2021-06-13 07:37:12,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:37:12,560 INFO L241 Difference]: Finished difference. Result has 74 places, 54 transitions, 132 flow [2021-06-13 07:37:12,561 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2021-06-13 07:37:12,562 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2021-06-13 07:37:12,562 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 132 flow [2021-06-13 07:37:12,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,562 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:12,562 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:12,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:37:12,563 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:12,563 INFO L82 PathProgramCache]: Analyzing trace with hash -293216521, now seen corresponding path program 1 times [2021-06-13 07:37:12,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:12,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687811527] [2021-06-13 07:37:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:12,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:12,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:12,633 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:37:12,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,643 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:12,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:12,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:12,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:12,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:12,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:12,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:12,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687811527] [2021-06-13 07:37:12,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687811527] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:12,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:12,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:12,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745913304] [2021-06-13 07:37:12,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:12,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:12,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:12,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:12,695 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-06-13 07:37:12,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:12,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-06-13 07:37:12,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:12,949 INFO L129 PetriNetUnfolder]: 16/119 cut-off events. [2021-06-13 07:37:12,950 INFO L130 PetriNetUnfolder]: For 40/51 co-relation queries the response was YES. [2021-06-13 07:37:12,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 119 events. 16/119 cut-off events. For 40/51 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 309 event pairs, 0 based on Foata normal form. 5/121 useless extension candidates. Maximal degree in co-relation 212. Up to 16 conditions per place. [2021-06-13 07:37:12,951 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 14 selfloop transitions, 4 changer transitions 25/85 dead transitions. [2021-06-13 07:37:12,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 336 flow [2021-06-13 07:37:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 07:37:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 07:37:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 914 transitions. [2021-06-13 07:37:12,953 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8024582967515365 [2021-06-13 07:37:12,953 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 914 transitions. [2021-06-13 07:37:12,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 914 transitions. [2021-06-13 07:37:12,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:12,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 914 transitions. [2021-06-13 07:37:12,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 53.76470588235294) internal successors, (914), 17 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,958 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,958 INFO L185 Difference]: Start difference. First operand has 74 places, 54 transitions, 132 flow. Second operand 17 states and 914 transitions. [2021-06-13 07:37:12,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 336 flow [2021-06-13 07:37:12,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 272 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-13 07:37:12,962 INFO L241 Difference]: Finished difference. Result has 91 places, 54 transitions, 160 flow [2021-06-13 07:37:12,962 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=160, PETRI_PLACES=91, PETRI_TRANSITIONS=54} [2021-06-13 07:37:12,962 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2021-06-13 07:37:12,963 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 54 transitions, 160 flow [2021-06-13 07:37:12,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:12,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:12,963 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:12,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:37:12,963 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:12,964 INFO L82 PathProgramCache]: Analyzing trace with hash 354043192, now seen corresponding path program 1 times [2021-06-13 07:37:12,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:12,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425261063] [2021-06-13 07:37:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:13,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:13,045 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:37:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,054 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:13,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:13,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:13,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:13,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425261063] [2021-06-13 07:37:13,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425261063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:13,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:13,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:13,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305346392] [2021-06-13 07:37:13,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:13,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:13,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:13,094 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-06-13 07:37:13,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 54 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:13,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-06-13 07:37:13,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:13,270 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2021-06-13 07:37:13,270 INFO L130 PetriNetUnfolder]: For 139/167 co-relation queries the response was YES. [2021-06-13 07:37:13,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 101 events. 9/101 cut-off events. For 139/167 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 228 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 208. Up to 18 conditions per place. [2021-06-13 07:37:13,272 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 14 selfloop transitions, 4 changer transitions 13/73 dead transitions. [2021-06-13 07:37:13,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 342 flow [2021-06-13 07:37:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:37:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:37:13,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 594 transitions. [2021-06-13 07:37:13,273 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8059701492537313 [2021-06-13 07:37:13,274 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 594 transitions. [2021-06-13 07:37:13,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 594 transitions. [2021-06-13 07:37:13,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:13,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 594 transitions. [2021-06-13 07:37:13,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 67.0) internal successors, (804), 12 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,277 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 67.0) internal successors, (804), 12 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,277 INFO L185 Difference]: Start difference. First operand has 91 places, 54 transitions, 160 flow. Second operand 11 states and 594 transitions. [2021-06-13 07:37:13,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 342 flow [2021-06-13 07:37:13,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 240 flow, removed 44 selfloop flow, removed 17 redundant places. [2021-06-13 07:37:13,280 INFO L241 Difference]: Finished difference. Result has 81 places, 54 transitions, 156 flow [2021-06-13 07:37:13,280 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=156, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2021-06-13 07:37:13,281 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2021-06-13 07:37:13,281 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 156 flow [2021-06-13 07:37:13,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,281 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:13,281 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:13,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:37:13,281 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash -635467116, now seen corresponding path program 1 times [2021-06-13 07:37:13,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:13,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502507801] [2021-06-13 07:37:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:13,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:13,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:13,346 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:13,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:13,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:13,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:13,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502507801] [2021-06-13 07:37:13,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502507801] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:13,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:13,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:13,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072597576] [2021-06-13 07:37:13,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:13,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:13,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:13,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:13,387 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:37:13,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:13,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:37:13,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:13,496 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-06-13 07:37:13,497 INFO L130 PetriNetUnfolder]: For 58/73 co-relation queries the response was YES. [2021-06-13 07:37:13,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 76 events. 4/76 cut-off events. For 58/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 150. Up to 9 conditions per place. [2021-06-13 07:37:13,497 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 6 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2021-06-13 07:37:13,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 266 flow [2021-06-13 07:37:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 554 transitions. [2021-06-13 07:37:13,500 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.826865671641791 [2021-06-13 07:37:13,500 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 554 transitions. [2021-06-13 07:37:13,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 554 transitions. [2021-06-13 07:37:13,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:13,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 554 transitions. [2021-06-13 07:37:13,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 55.4) internal successors, (554), 10 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,503 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,503 INFO L185 Difference]: Start difference. First operand has 81 places, 54 transitions, 156 flow. Second operand 10 states and 554 transitions. [2021-06-13 07:37:13,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 266 flow [2021-06-13 07:37:13,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 211 flow, removed 20 selfloop flow, removed 12 redundant places. [2021-06-13 07:37:13,505 INFO L241 Difference]: Finished difference. Result has 80 places, 53 transitions, 156 flow [2021-06-13 07:37:13,505 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2021-06-13 07:37:13,505 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 19 predicate places. [2021-06-13 07:37:13,505 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 156 flow [2021-06-13 07:37:13,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:37:13,506 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:37:13,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:37:13,506 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:37:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:37:13,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1703076296, now seen corresponding path program 1 times [2021-06-13 07:37:13,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:37:13,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767351816] [2021-06-13 07:37:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:37:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:37:13,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:13,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:37:13,540 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:37:13,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:37:13,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:37:13,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:37:13,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:37:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:37:13,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:37:13,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767351816] [2021-06-13 07:37:13,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767351816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:37:13,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:37:13,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:37:13,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005937871] [2021-06-13 07:37:13,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:37:13,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:37:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:37:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:37:13,570 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:37:13,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:37:13,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:37:13,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:37:13,700 INFO L129 PetriNetUnfolder]: 4/59 cut-off events. [2021-06-13 07:37:13,700 INFO L130 PetriNetUnfolder]: For 38/41 co-relation queries the response was YES. [2021-06-13 07:37:13,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 59 events. 4/59 cut-off events. For 38/41 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2021-06-13 07:37:13,700 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2021-06-13 07:37:13,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 58 transitions, 213 flow [2021-06-13 07:37:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:37:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:37:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 548 transitions. [2021-06-13 07:37:13,702 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.817910447761194 [2021-06-13 07:37:13,702 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 548 transitions. [2021-06-13 07:37:13,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 548 transitions. [2021-06-13 07:37:13,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:37:13,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 548 transitions. [2021-06-13 07:37:13,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 54.8) internal successors, (548), 10 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) [2021-06-13 07:37:13,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,705 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,705 INFO L185 Difference]: Start difference. First operand has 80 places, 53 transitions, 156 flow. Second operand 10 states and 548 transitions. [2021-06-13 07:37:13,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 58 transitions, 213 flow [2021-06-13 07:37:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 162 flow, removed 16 selfloop flow, removed 11 redundant places. [2021-06-13 07:37:13,706 INFO L241 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2021-06-13 07:37:13,706 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2021-06-13 07:37:13,707 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-06-13 07:37:13,707 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2021-06-13 07:37:13,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:37:13,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:37:13,709 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:37:13,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:37:13 BasicIcfg [2021-06-13 07:37:13,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:37:13,711 INFO L168 Benchmark]: Toolchain (without parser) took 2662.99 ms. Allocated memory was 196.1 MB in the beginning and 262.1 MB in the end (delta: 66.1 MB). Free memory was 159.7 MB in the beginning and 230.0 MB in the end (delta: -70.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:13,711 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 196.1 MB. Free memory is still 177.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:13,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.33 ms. Allocated memory is still 196.1 MB. Free memory was 159.5 MB in the beginning and 158.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:13,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 196.1 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:13,712 INFO L168 Benchmark]: Boogie Preprocessor took 30.11 ms. Allocated memory is still 196.1 MB. Free memory was 156.0 MB in the beginning and 154.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:13,712 INFO L168 Benchmark]: RCFGBuilder took 370.85 ms. Allocated memory is still 196.1 MB. Free memory was 154.5 MB in the beginning and 133.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:37:13,713 INFO L168 Benchmark]: TraceAbstraction took 1808.19 ms. Allocated memory was 196.1 MB in the beginning and 262.1 MB in the end (delta: 66.1 MB). Free memory was 132.9 MB in the beginning and 230.0 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:37:13,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 196.1 MB. Free memory is still 177.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 404.33 ms. Allocated memory is still 196.1 MB. Free memory was 159.5 MB in the beginning and 158.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 196.1 MB. Free memory was 158.0 MB in the beginning and 156.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.11 ms. Allocated memory is still 196.1 MB. Free memory was 156.0 MB in the beginning and 154.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.85 ms. Allocated memory is still 196.1 MB. Free memory was 154.5 MB in the beginning and 133.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1808.19 ms. Allocated memory was 196.1 MB in the beginning and 262.1 MB in the end (delta: 66.1 MB). Free memory was 132.9 MB in the beginning and 230.0 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1734.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 916.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 54.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 142 SDslu, 209 SDs, 0 SdLazy, 174 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 709.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=2, InterpolantAutomatonStates: 57, 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: 13.2ms SsaConstructionTime, 121.5ms SatisfiabilityAnalysisTime, 489.8ms InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...