/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:35:22,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:35:22,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:35:22,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:35:22,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:35:22,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:35:22,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:35:22,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:35:22,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:35:22,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:35:22,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:35:22,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:35:22,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:35:22,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:35:22,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:35:22,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:35:22,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:35:22,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:35:22,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:35:22,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:35:22,276 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 [2021-03-11 02:35:22,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:35:22,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:35:22,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:35:22,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:35:22,311 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:35:22,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:35:22,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:35:22,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:35:22,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:35:22,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:35:22,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:35:22,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:35:22,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:35:22,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:35:22,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:35:22,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:35:22,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:35:22,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:35:22,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:35:22,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:35:22,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:35:22,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:35:22,597 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:35:22,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-03-11 02:35:22,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e873565/126ee0fe01564c3dbc418d67cd7a752f/FLAGda533481b [2021-03-11 02:35:23,066 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:35:23,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.opt.i [2021-03-11 02:35:23,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e873565/126ee0fe01564c3dbc418d67cd7a752f/FLAGda533481b [2021-03-11 02:35:23,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e873565/126ee0fe01564c3dbc418d67cd7a752f [2021-03-11 02:35:23,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:35:23,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:35:23,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:23,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:35:23,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:35:23,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb159b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23, skipping insertion in model container [2021-03-11 02:35:23,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:35:23,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:35:23,590 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/safe022_tso.opt.i[949,962] [2021-03-11 02:35:23,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:23,736 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:35:23,745 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/safe022_tso.opt.i[949,962] [2021-03-11 02:35:23,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:23,834 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:35:23,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23 WrapperNode [2021-03-11 02:35:23,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:23,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:23,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:35:23,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:35:23,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:23,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:35:23,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:35:23,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:35:23,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (1/1) ... [2021-03-11 02:35:23,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:35:23,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:35:23,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:35:23,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:35:23,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (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 [2021-03-11 02:35:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:35:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:35:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:35:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:35:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:35:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:35:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:35:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:35:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:35:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:35:23,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:35:23,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:35:23,972 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:35:24,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:35:24,242 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:35:24,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:24 BoogieIcfgContainer [2021-03-11 02:35:24,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:35:24,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:35:24,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:35:24,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:35:24,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:35:23" (1/3) ... [2021-03-11 02:35:24,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d9d75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:24, skipping insertion in model container [2021-03-11 02:35:24,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:23" (2/3) ... [2021-03-11 02:35:24,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d9d75a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:24, skipping insertion in model container [2021-03-11 02:35:24,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:24" (3/3) ... [2021-03-11 02:35:24,249 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.opt.i [2021-03-11 02:35:24,252 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:35:24,255 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:35:24,256 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:35:24,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,273 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,273 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,275 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,281 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,281 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,282 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:24,283 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:35:24,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 02:35:24,309 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:35:24,309 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:35:24,310 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:35:24,310 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:35:24,310 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:35:24,310 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:35:24,310 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:35:24,310 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:35:24,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:35:24,338 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 02:35:24,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:24,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 02:35:24,341 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:35:24,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-11 02:35:24,359 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-11 02:35:24,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:24,360 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:24,360 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] [2021-03-11 02:35:24,360 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash -894398438, now seen corresponding path program 1 times [2021-03-11 02:35:24,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:24,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008560831] [2021-03-11 02:35:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:24,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:24,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:24,538 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 02:35:24,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:24,549 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:24,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:24,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:24,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:24,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:24,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008560831] [2021-03-11 02:35:24,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:24,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:24,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109241807] [2021-03-11 02:35:24,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:24,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:24,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:24,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:24,617 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:24,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:35:24,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:24,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:24,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:24,763 INFO L129 PetriNetUnfolder]: 11/83 cut-off events. [2021-03-11 02:35:24,763 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:24,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 83 events. 11/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 5 based on Foata normal form. 5/86 useless extension candidates. Maximal degree in co-relation 101. Up to 18 conditions per place. [2021-03-11 02:35:24,764 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 8 selfloop transitions, 2 changer transitions 14/61 dead transitions. [2021-03-11 02:35:24,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 174 flow [2021-03-11 02:35:24,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:35:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:35:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 450 transitions. [2021-03-11 02:35:24,774 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.819672131147541 [2021-03-11 02:35:24,774 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 450 transitions. [2021-03-11 02:35:24,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 450 transitions. [2021-03-11 02:35:24,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:24,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 450 transitions. [2021-03-11 02:35:24,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2021-03-11 02:35:24,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:24,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:24,786 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 104 flow. Second operand 9 states and 450 transitions. [2021-03-11 02:35:24,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 174 flow [2021-03-11 02:35:24,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:35:24,790 INFO L241 Difference]: Finished difference. Result has 68 places, 47 transitions, 118 flow [2021-03-11 02:35:24,792 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=118, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2021-03-11 02:35:24,792 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-03-11 02:35:24,792 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 118 flow [2021-03-11 02:35:24,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:35:24,793 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:24,793 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] [2021-03-11 02:35:24,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:35:24,793 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1322774107, now seen corresponding path program 1 times [2021-03-11 02:35:24,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:24,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99639354] [2021-03-11 02:35:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:24,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:24,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:24,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:24,853 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:24,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:24,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:24,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:24,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:24,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:24,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99639354] [2021-03-11 02:35:24,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:24,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:24,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473626671] [2021-03-11 02:35:24,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:24,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:24,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:24,924 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:24,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:35:24,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:24,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:24,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:25,137 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2021-03-11 02:35:25,138 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-03-11 02:35:25,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 68 events. 4/68 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2021-03-11 02:35:25,138 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 6 selfloop transitions, 4 changer transitions 12/59 dead transitions. [2021-03-11 02:35:25,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 209 flow [2021-03-11 02:35:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:35:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:35:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2021-03-11 02:35:25,140 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8098360655737705 [2021-03-11 02:35:25,140 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2021-03-11 02:35:25,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2021-03-11 02:35:25,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:25,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2021-03-11 02:35:25,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.4) internal successors, (494), 10 states have internal predecessors, (494), 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) [2021-03-11 02:35:25,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:25,143 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:25,143 INFO L185 Difference]: Start difference. First operand has 68 places, 47 transitions, 118 flow. Second operand 10 states and 494 transitions. [2021-03-11 02:35:25,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 209 flow [2021-03-11 02:35:25,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 175 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 02:35:25,145 INFO L241 Difference]: Finished difference. Result has 70 places, 47 transitions, 132 flow [2021-03-11 02:35:25,145 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=132, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2021-03-11 02:35:25,145 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2021-03-11 02:35:25,146 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 132 flow [2021-03-11 02:35:25,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:35:25,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:25,146 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] [2021-03-11 02:35:25,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:35:25,146 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1004606386, now seen corresponding path program 1 times [2021-03-11 02:35:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:25,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111910559] [2021-03-11 02:35:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:25,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:25,191 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:25,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:25,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:25,220 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:25,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:25,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:25,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111910559] [2021-03-11 02:35:25,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:25,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:35:25,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987423135] [2021-03-11 02:35:25,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:35:25,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:25,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:35:25,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:35:25,234 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 61 [2021-03-11 02:35:25,234 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:25,234 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:25,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 61 [2021-03-11 02:35:25,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:25,395 INFO L129 PetriNetUnfolder]: 24/124 cut-off events. [2021-03-11 02:35:25,395 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-03-11 02:35:25,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 124 events. 24/124 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 401 event pairs, 0 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 211. Up to 26 conditions per place. [2021-03-11 02:35:25,398 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 8 selfloop transitions, 5 changer transitions 15/66 dead transitions. [2021-03-11 02:35:25,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 226 flow [2021-03-11 02:35:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:35:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:35:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 462 transitions. [2021-03-11 02:35:25,402 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2021-03-11 02:35:25,402 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 462 transitions. [2021-03-11 02:35:25,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 462 transitions. [2021-03-11 02:35:25,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:25,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 462 transitions. [2021-03-11 02:35:25,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.333333333333336) internal successors, (462), 9 states have internal predecessors, (462), 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) [2021-03-11 02:35:25,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:25,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:25,406 INFO L185 Difference]: Start difference. First operand has 70 places, 47 transitions, 132 flow. Second operand 9 states and 462 transitions. [2021-03-11 02:35:25,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 226 flow [2021-03-11 02:35:25,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 200 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-03-11 02:35:25,412 INFO L241 Difference]: Finished difference. Result has 68 places, 49 transitions, 150 flow [2021-03-11 02:35:25,413 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2021-03-11 02:35:25,415 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-03-11 02:35:25,415 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 150 flow [2021-03-11 02:35:25,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:35:25,415 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:25,421 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] [2021-03-11 02:35:25,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:35:25,421 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:25,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:25,422 INFO L82 PathProgramCache]: Analyzing trace with hash -182144863, now seen corresponding path program 1 times [2021-03-11 02:35:25,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:25,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125425924] [2021-03-11 02:35:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:25,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:25,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:25,513 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:25,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:25,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:25,540 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:25,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:25,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:25,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125425924] [2021-03-11 02:35:25,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:25,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:25,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888824637] [2021-03-11 02:35:25,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:25,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:25,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:25,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:25,551 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 61 [2021-03-11 02:35:25,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 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) [2021-03-11 02:35:25,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:25,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 61 [2021-03-11 02:35:25,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:25,708 INFO L129 PetriNetUnfolder]: 8/76 cut-off events. [2021-03-11 02:35:25,708 INFO L130 PetriNetUnfolder]: For 67/74 co-relation queries the response was YES. [2021-03-11 02:35:25,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 76 events. 8/76 cut-off events. For 67/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 141 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 163. Up to 17 conditions per place. [2021-03-11 02:35:25,709 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 4 selfloop transitions, 7 changer transitions 11/60 dead transitions. [2021-03-11 02:35:25,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 259 flow [2021-03-11 02:35:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:35:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:35:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 504 transitions. [2021-03-11 02:35:25,712 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8262295081967214 [2021-03-11 02:35:25,712 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 504 transitions. [2021-03-11 02:35:25,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 504 transitions. [2021-03-11 02:35:25,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:25,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 504 transitions. [2021-03-11 02:35:25,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 50.4) internal successors, (504), 10 states have internal predecessors, (504), 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) [2021-03-11 02:35:25,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:25,715 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:25,715 INFO L185 Difference]: Start difference. First operand has 68 places, 49 transitions, 150 flow. Second operand 10 states and 504 transitions. [2021-03-11 02:35:25,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 259 flow [2021-03-11 02:35:25,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 220 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 02:35:25,717 INFO L241 Difference]: Finished difference. Result has 73 places, 49 transitions, 162 flow [2021-03-11 02:35:25,717 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2021-03-11 02:35:25,717 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-03-11 02:35:25,717 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 162 flow [2021-03-11 02:35:25,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 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) [2021-03-11 02:35:25,717 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:25,717 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] [2021-03-11 02:35:25,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:35:25,717 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -222690148, now seen corresponding path program 1 times [2021-03-11 02:35:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:25,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273861340] [2021-03-11 02:35:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:25,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:25,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:25,789 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:25,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:25,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:25,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:25,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:25,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:25,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273861340] [2021-03-11 02:35:25,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:25,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:25,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631955029] [2021-03-11 02:35:25,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:25,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:25,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:25,831 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:25,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 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) [2021-03-11 02:35:25,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:25,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:25,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:25,892 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-11 02:35:25,892 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-11 02:35:25,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 49 events. 1/49 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2021-03-11 02:35:25,893 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2021-03-11 02:35:25,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 47 transitions, 176 flow [2021-03-11 02:35:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:35:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:35:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 339 transitions. [2021-03-11 02:35:25,894 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7939110070257611 [2021-03-11 02:35:25,894 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 339 transitions. [2021-03-11 02:35:25,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 339 transitions. [2021-03-11 02:35:25,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:25,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 339 transitions. [2021-03-11 02:35:25,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 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) [2021-03-11 02:35:25,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2021-03-11 02:35:25,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2021-03-11 02:35:25,895 INFO L185 Difference]: Start difference. First operand has 73 places, 49 transitions, 162 flow. Second operand 7 states and 339 transitions. [2021-03-11 02:35:25,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 47 transitions, 176 flow [2021-03-11 02:35:25,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 130 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-03-11 02:35:25,897 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2021-03-11 02:35:25,897 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2021-03-11 02:35:25,897 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2021-03-11 02:35:25,897 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2021-03-11 02:35:25,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 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) [2021-03-11 02:35:25,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:35:25,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:35:25 BasicIcfg [2021-03-11 02:35:25,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:35:25,902 INFO L168 Benchmark]: Toolchain (without parser) took 2492.97 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 237.4 MB in the beginning and 318.2 MB in the end (delta: -80.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,902 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 127.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.51 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 236.3 MB in the beginning and 333.9 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,903 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 371.2 MB. Free memory was 333.9 MB in the beginning and 331.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,903 INFO L168 Benchmark]: Boogie Preprocessor took 27.69 ms. Allocated memory is still 371.2 MB. Free memory was 331.7 MB in the beginning and 330.9 MB in the end (delta: 845.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,903 INFO L168 Benchmark]: RCFGBuilder took 334.59 ms. Allocated memory is still 371.2 MB. Free memory was 330.3 MB in the beginning and 310.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:25,903 INFO L168 Benchmark]: TraceAbstraction took 1656.19 ms. Allocated memory is still 371.2 MB. Free memory was 310.8 MB in the beginning and 318.2 MB in the end (delta: -7.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:35:25,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 237.8 MB in the beginning and 237.7 MB in the end (delta: 127.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 422.51 ms. Allocated memory was 255.9 MB in the beginning and 371.2 MB in the end (delta: 115.3 MB). Free memory was 236.3 MB in the beginning and 333.9 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 371.2 MB. Free memory was 333.9 MB in the beginning and 331.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.69 ms. Allocated memory is still 371.2 MB. Free memory was 331.7 MB in the beginning and 330.9 MB in the end (delta: 845.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 334.59 ms. Allocated memory is still 371.2 MB. Free memory was 330.3 MB in the beginning and 310.8 MB in the end (delta: 19.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1656.19 ms. Allocated memory is still 371.2 MB. Free memory was 310.8 MB in the beginning and 318.2 MB in the end (delta: -7.4 MB). There was no memory consumed. Max. memory is 16.0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1591.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 821.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 87 SDslu, 125 SDs, 0 SdLazy, 159 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 640.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, InterpolantAutomatonStates: 45, 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: 9.8ms SsaConstructionTime, 97.0ms SatisfiabilityAnalysisTime, 510.7ms InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...