/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/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:24:33,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:24:33,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:24:33,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:24:33,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:24:33,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:24:33,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:24:33,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:24:33,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:24:33,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:24:33,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:24:33,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:24:33,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:24:33,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:24:33,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:24:33,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:24:33,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:24:33,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:24:33,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:24:33,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:24:33,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:24:33,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:24:33,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:24:33,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:24:33,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 12:24:33,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:24:33,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:24:33,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:24:33,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:24:33,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:24:33,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:24:33,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:24:33,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:24:33,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:24:33,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:24:33,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:24:33,247 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 [2021-06-10 12:24:33,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:24:33,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:24:33,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:24:33,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:24:33,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:24:33,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:24:33,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:24:33,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:24:33,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:24:33,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:24:33,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:24:33,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:24:33,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:24:33,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:24:33,550 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:24:33,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-10 12:24:33,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc18c4fa4/6cbd30d65b91406187b040cd76e4959c/FLAG275d3600a [2021-06-10 12:24:34,019 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:24:34,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-10 12:24:34,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc18c4fa4/6cbd30d65b91406187b040cd76e4959c/FLAG275d3600a [2021-06-10 12:24:34,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc18c4fa4/6cbd30d65b91406187b040cd76e4959c [2021-06-10 12:24:34,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:24:34,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:24:34,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:24:34,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:24:34,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:24:34,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9e5dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34, skipping insertion in model container [2021-06-10 12:24:34,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:24:34,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:24:34,221 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/safe006_pso.oepc.i[950,963] [2021-06-10 12:24:34,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:24:34,319 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:24:34,330 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/safe006_pso.oepc.i[950,963] [2021-06-10 12:24:34,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:24:34,399 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:24:34,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34 WrapperNode [2021-06-10 12:24:34,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:24:34,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:24:34,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:24:34,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:24:34,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:24:34,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:24:34,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:24:34,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:24:34,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (1/1) ... [2021-06-10 12:24:34,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:24:34,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:24:34,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:24:34,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:24:34,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (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 [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:24:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:24:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:24:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:24:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:24:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:24:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:24:34,490 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:24:34,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:24:34,685 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:24:34,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:24:34 BoogieIcfgContainer [2021-06-10 12:24:34,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:24:34,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:24:34,688 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:24:34,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:24:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:24:34" (1/3) ... [2021-06-10 12:24:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0abf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:24:34, skipping insertion in model container [2021-06-10 12:24:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:24:34" (2/3) ... [2021-06-10 12:24:34,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0abf61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:24:34, skipping insertion in model container [2021-06-10 12:24:34,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:24:34" (3/3) ... [2021-06-10 12:24:34,691 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-06-10 12:24:34,695 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:24:34,698 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:24:34,699 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:24:34,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,716 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,717 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,718 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,718 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,720 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,721 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,721 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,722 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,725 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,726 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,726 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:24:34,727 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:24:34,740 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 12:24:34,754 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:24:34,754 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:24:34,754 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:24:34,754 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:24:34,754 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:24:34,754 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:24:34,755 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:24:34,755 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:24:34,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-06-10 12:24:34,782 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-06-10 12:24:34,782 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:34,784 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. [2021-06-10 12:24:34,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-06-10 12:24:34,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-06-10 12:24:34,797 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-06-10 12:24:34,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:34,798 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:34,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:34,799 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:34,802 INFO L82 PathProgramCache]: Analyzing trace with hash -894398438, now seen corresponding path program 1 times [2021-06-10 12:24:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:34,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978752623] [2021-06-10 12:24:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:35,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:35,049 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 12:24:35,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,068 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:35,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:35,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:24:35,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978752623] [2021-06-10 12:24:35,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:35,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:35,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404364533] [2021-06-10 12:24:35,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:35,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:35,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:35,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:35,154 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-06-10 12:24:35,157 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) [2021-06-10 12:24:35,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:35,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-06-10 12:24:35,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:35,331 INFO L129 PetriNetUnfolder]: 20/107 cut-off events. [2021-06-10 12:24:35,331 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:24:35,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 107 events. 20/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 5 based on Foata normal form. 6/110 useless extension candidates. Maximal degree in co-relation 139. Up to 19 conditions per place. [2021-06-10 12:24:35,333 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 9 selfloop transitions, 2 changer transitions 16/65 dead transitions. [2021-06-10 12:24:35,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 190 flow [2021-06-10 12:24:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:24:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:24:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 454 transitions. [2021-06-10 12:24:35,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8269581056466302 [2021-06-10 12:24:35,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 454 transitions. [2021-06-10 12:24:35,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 454 transitions. [2021-06-10 12:24:35,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:35,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 454 transitions. [2021-06-10 12:24:35,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.44444444444444) internal successors, (454), 9 states have internal predecessors, (454), 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) [2021-06-10 12:24:35,371 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) [2021-06-10 12:24:35,374 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) [2021-06-10 12:24:35,375 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 104 flow. Second operand 9 states and 454 transitions. [2021-06-10 12:24:35,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 190 flow [2021-06-10 12:24:35,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 12:24:35,381 INFO L241 Difference]: Finished difference. Result has 68 places, 48 transitions, 120 flow [2021-06-10 12:24:35,383 INFO L326 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=120, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2021-06-10 12:24:35,383 INFO L343 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-06-10 12:24:35,383 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 120 flow [2021-06-10 12:24:35,384 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) [2021-06-10 12:24:35,384 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:35,384 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:35,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:24:35,384 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1574208101, now seen corresponding path program 1 times [2021-06-10 12:24:35,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:35,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271898701] [2021-06-10 12:24:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:35,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:35,440 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:35,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:35,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:24:35,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271898701] [2021-06-10 12:24:35,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:35,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:24:35,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178346769] [2021-06-10 12:24:35,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:24:35,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:35,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:24:35,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:24:35,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 61 [2021-06-10 12:24:35,493 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2021-06-10 12:24:35,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:35,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 61 [2021-06-10 12:24:35,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:35,578 INFO L129 PetriNetUnfolder]: 3/71 cut-off events. [2021-06-10 12:24:35,578 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-10 12:24:35,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 71 events. 3/71 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 108. Up to 7 conditions per place. [2021-06-10 12:24:35,579 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 6 selfloop transitions, 2 changer transitions 11/58 dead transitions. [2021-06-10 12:24:35,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 194 flow [2021-06-10 12:24:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:24:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:24:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 461 transitions. [2021-06-10 12:24:35,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8397085610200364 [2021-06-10 12:24:35,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 461 transitions. [2021-06-10 12:24:35,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 461 transitions. [2021-06-10 12:24:35,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:35,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 461 transitions. [2021-06-10 12:24:35,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.22222222222222) internal successors, (461), 9 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:24:35,585 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) [2021-06-10 12:24:35,586 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) [2021-06-10 12:24:35,586 INFO L185 Difference]: Start difference. First operand has 68 places, 48 transitions, 120 flow. Second operand 9 states and 461 transitions. [2021-06-10 12:24:35,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 194 flow [2021-06-10 12:24:35,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 162 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-10 12:24:35,588 INFO L241 Difference]: Finished difference. Result has 69 places, 47 transitions, 122 flow [2021-06-10 12:24:35,588 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=122, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2021-06-10 12:24:35,589 INFO L343 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2021-06-10 12:24:35,589 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 122 flow [2021-06-10 12:24:35,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2021-06-10 12:24:35,589 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:35,589 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:35,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:24:35,589 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash -739361380, now seen corresponding path program 1 times [2021-06-10 12:24:35,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:35,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190750550] [2021-06-10 12:24:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:35,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:35,664 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 12:24:35,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,675 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:35,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:35,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:24:35,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190750550] [2021-06-10 12:24:35,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:35,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:35,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121991430] [2021-06-10 12:24:35,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:35,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:35,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:35,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:35,719 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 61 [2021-06-10 12:24:35,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 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) [2021-06-10 12:24:35,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:35,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 61 [2021-06-10 12:24:35,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:35,875 INFO L129 PetriNetUnfolder]: 10/85 cut-off events. [2021-06-10 12:24:35,876 INFO L130 PetriNetUnfolder]: For 29/46 co-relation queries the response was YES. [2021-06-10 12:24:35,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 85 events. 10/85 cut-off events. For 29/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 152. Up to 14 conditions per place. [2021-06-10 12:24:35,876 INFO L132 encePairwiseOnDemand]: 52/61 looper letters, 14 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2021-06-10 12:24:35,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 264 flow [2021-06-10 12:24:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:24:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:24:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 528 transitions. [2021-06-10 12:24:35,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7868852459016393 [2021-06-10 12:24:35,878 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 528 transitions. [2021-06-10 12:24:35,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 528 transitions. [2021-06-10 12:24:35,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:35,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 528 transitions. [2021-06-10 12:24:35,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 48.0) internal successors, (528), 11 states have internal predecessors, (528), 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) [2021-06-10 12:24:35,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2021-06-10 12:24:35,881 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 61.0) internal successors, (732), 12 states have internal predecessors, (732), 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) [2021-06-10 12:24:35,881 INFO L185 Difference]: Start difference. First operand has 69 places, 47 transitions, 122 flow. Second operand 11 states and 528 transitions. [2021-06-10 12:24:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 264 flow [2021-06-10 12:24:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 220 flow, removed 20 selfloop flow, removed 8 redundant places. [2021-06-10 12:24:35,883 INFO L241 Difference]: Finished difference. Result has 73 places, 47 transitions, 138 flow [2021-06-10 12:24:35,883 INFO L326 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=138, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2021-06-10 12:24:35,884 INFO L343 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-06-10 12:24:35,884 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 138 flow [2021-06-10 12:24:35,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 46.57142857142857) internal successors, (326), 7 states have internal predecessors, (326), 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) [2021-06-10 12:24:35,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:35,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:35,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:24:35,884 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1364973306, now seen corresponding path program 2 times [2021-06-10 12:24:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:35,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798952156] [2021-06-10 12:24:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:35,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:35,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:35,945 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:35,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:35,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:35,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:35,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:24:35,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798952156] [2021-06-10 12:24:35,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:35,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:24:35,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886925919] [2021-06-10 12:24:35,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:24:35,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:35,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:24:35,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:24:35,975 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-06-10 12:24:35,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 138 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) [2021-06-10 12:24:35,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:35,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-06-10 12:24:35,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:36,102 INFO L129 PetriNetUnfolder]: 9/87 cut-off events. [2021-06-10 12:24:36,102 INFO L130 PetriNetUnfolder]: For 80/114 co-relation queries the response was YES. [2021-06-10 12:24:36,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 87 events. 9/87 cut-off events. For 80/114 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 203 event pairs, 1 based on Foata normal form. 4/88 useless extension candidates. Maximal degree in co-relation 188. Up to 11 conditions per place. [2021-06-10 12:24:36,103 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 6 selfloop transitions, 4 changer transitions 12/59 dead transitions. [2021-06-10 12:24:36,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 243 flow [2021-06-10 12:24:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:24:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:24:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2021-06-10 12:24:36,105 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8098360655737705 [2021-06-10 12:24:36,105 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2021-06-10 12:24:36,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2021-06-10 12:24:36,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:36,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2021-06-10 12:24:36,106 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) [2021-06-10 12:24:36,107 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) [2021-06-10 12:24:36,107 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) [2021-06-10 12:24:36,107 INFO L185 Difference]: Start difference. First operand has 73 places, 47 transitions, 138 flow. Second operand 10 states and 494 transitions. [2021-06-10 12:24:36,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 243 flow [2021-06-10 12:24:36,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 188 flow, removed 20 selfloop flow, removed 12 redundant places. [2021-06-10 12:24:36,112 INFO L241 Difference]: Finished difference. Result has 72 places, 47 transitions, 140 flow [2021-06-10 12:24:36,112 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=140, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2021-06-10 12:24:36,112 INFO L343 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2021-06-10 12:24:36,112 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 140 flow [2021-06-10 12:24:36,113 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) [2021-06-10 12:24:36,113 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:24:36,113 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:24:36,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:24:36,113 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:24:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:24:36,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1288652630, now seen corresponding path program 1 times [2021-06-10 12:24:36,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:24:36,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016278072] [2021-06-10 12:24:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:24:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:24:36,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:36,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:36,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:24:36,180 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 12:24:36,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:36,187 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:24:36,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:24:36,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:36,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:24:36,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:24:36,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:24:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:24:36,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016278072] [2021-06-10 12:24:36,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:24:36,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:24:36,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163417573] [2021-06-10 12:24:36,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:24:36,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:24:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:24:36,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:24:36,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 61 [2021-06-10 12:24:36,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 140 flow. Second operand has 8 states, 8 states have (on average 46.375) internal successors, (371), 8 states have internal predecessors, (371), 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) [2021-06-10 12:24:36,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:24:36,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 61 [2021-06-10 12:24:36,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:24:36,336 INFO L129 PetriNetUnfolder]: 4/53 cut-off events. [2021-06-10 12:24:36,336 INFO L130 PetriNetUnfolder]: For 41/48 co-relation queries the response was YES. [2021-06-10 12:24:36,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 53 events. 4/53 cut-off events. For 41/48 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 2/55 useless extension candidates. Maximal degree in co-relation 107. Up to 7 conditions per place. [2021-06-10 12:24:36,336 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2021-06-10 12:24:36,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 52 transitions, 201 flow [2021-06-10 12:24:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:24:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:24:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 470 transitions. [2021-06-10 12:24:36,339 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2021-06-10 12:24:36,339 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 470 transitions. [2021-06-10 12:24:36,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 470 transitions. [2021-06-10 12:24:36,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:24:36,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 470 transitions. [2021-06-10 12:24:36,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 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) [2021-06-10 12:24:36,341 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) [2021-06-10 12:24:36,341 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) [2021-06-10 12:24:36,341 INFO L185 Difference]: Start difference. First operand has 72 places, 47 transitions, 140 flow. Second operand 10 states and 470 transitions. [2021-06-10 12:24:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 52 transitions, 201 flow [2021-06-10 12:24:36,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 52 transitions, 160 flow, removed 13 selfloop flow, removed 9 redundant places. [2021-06-10 12:24:36,342 INFO L241 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2021-06-10 12:24:36,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2021-06-10 12:24:36,342 INFO L343 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2021-06-10 12:24:36,343 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2021-06-10 12:24:36,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 46.375) internal successors, (371), 8 states have internal predecessors, (371), 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) [2021-06-10 12:24:36,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:24:36,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:24:36 BasicIcfg [2021-06-10 12:24:36,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:24:36,347 INFO L168 Benchmark]: Toolchain (without parser) took 2299.74 ms. Allocated memory is still 367.0 MB. Free memory was 329.8 MB in the beginning and 242.2 MB in the end (delta: 87.6 MB). Peak memory consumption was 90.5 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:36,347 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 367.0 MB. Free memory is still 347.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:24:36,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.97 ms. Allocated memory is still 367.0 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 124.4 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:36,348 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 367.0 MB. Free memory was 329.5 MB in the beginning and 327.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:36,348 INFO L168 Benchmark]: Boogie Preprocessor took 13.11 ms. Allocated memory is still 367.0 MB. Free memory was 327.4 MB in the beginning and 326.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:24:36,348 INFO L168 Benchmark]: RCFGBuilder took 247.17 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 304.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:36,349 INFO L168 Benchmark]: TraceAbstraction took 1658.93 ms. Allocated memory is still 367.0 MB. Free memory was 304.4 MB in the beginning and 242.2 MB in the end (delta: 62.1 MB). Peak memory consumption was 64.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:24:36,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 367.0 MB. Free memory is still 347.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 349.97 ms. Allocated memory is still 367.0 MB. Free memory was 329.6 MB in the beginning and 329.5 MB in the end (delta: 124.4 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.58 ms. Allocated memory is still 367.0 MB. Free memory was 329.5 MB in the beginning and 327.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.11 ms. Allocated memory is still 367.0 MB. Free memory was 327.4 MB in the beginning and 326.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 247.17 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 304.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1658.93 ms. Allocated memory is still 367.0 MB. Free memory was 304.4 MB in the beginning and 242.2 MB in the end (delta: 62.1 MB). Peak memory consumption was 64.2 MB. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1592.1ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 758.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 61 SDtfs, 119 SDslu, 172 SDs, 0 SdLazy, 142 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 585.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.3ms SsaConstructionTime, 127.8ms SatisfiabilityAnalysisTime, 529.2ms InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 759 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...