/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/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:25:05,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:25:05,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:25:05,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:25:05,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:25:05,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:25:05,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:25:05,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:25:05,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:25:05,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:25:05,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:25:05,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:25:05,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:25:05,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:25:05,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:25:05,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:25:05,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:25:05,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:25:05,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:25:05,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:25:05,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:25:05,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:25:05,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:25:05,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:25:05,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:25:05,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:25:05,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:25:05,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:25:05,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:25:05,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:25:05,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:25:05,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:25:05,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:25:05,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:25:05,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:25:05,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:25:05,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:25:05,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:25:05,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:25:05,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:25:05,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:25:05,296 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 12:25:05,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:25:05,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:25:05,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:25:05,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:25:05,336 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:25:05,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:25:05,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:25:05,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:25:05,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:25:05,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:25:05,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:25:05,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:25:05,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:25:05,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:25:05,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:25:05,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:25:05,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:25:05,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:25:05,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:25:05,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:25:05,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:25:05,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:25:05,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:25:05,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:25:05,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:25:05,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:25:05,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:25:05,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:25:05,678 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:25:05,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-06-10 12:25:05,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2334ffc38/91327369ebd646ac8e6f1377e37009e0/FLAG76bf50cc0 [2021-06-10 12:25:06,255 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:25:06,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-06-10 12:25:06,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2334ffc38/91327369ebd646ac8e6f1377e37009e0/FLAG76bf50cc0 [2021-06-10 12:25:06,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2334ffc38/91327369ebd646ac8e6f1377e37009e0 [2021-06-10 12:25:06,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:25:06,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:25:06,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:06,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:25:06,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:25:06,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:06" (1/1) ... [2021-06-10 12:25:06,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4745e705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:06, skipping insertion in model container [2021-06-10 12:25:06,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:06" (1/1) ... [2021-06-10 12:25:06,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:25:06,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:25:06,914 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/safe009_pso.opt.i[949,962] [2021-06-10 12:25:07,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:07,105 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:25:07,115 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/safe009_pso.opt.i[949,962] [2021-06-10 12:25:07,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:07,192 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:25:07,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07 WrapperNode [2021-06-10 12:25:07,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:07,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:07,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:25:07,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:25:07,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:07,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:25:07,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:25:07,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:25:07,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (1/1) ... [2021-06-10 12:25:07,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:25:07,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:25:07,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:25:07,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:25:07,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (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 12:25:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:25:07,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:25:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:25:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:25:07,332 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:25:07,333 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:25:07,333 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:25:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:25:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:25:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:25:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:25:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:25:07,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:25:07,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:25:07,335 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 12:25:07,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:25:07,762 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:25:07,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:07 BoogieIcfgContainer [2021-06-10 12:25:07,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:25:07,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:25:07,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:25:07,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:25:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:25:06" (1/3) ... [2021-06-10 12:25:07,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a671c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:07, skipping insertion in model container [2021-06-10 12:25:07,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:07" (2/3) ... [2021-06-10 12:25:07,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a671c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:07, skipping insertion in model container [2021-06-10 12:25:07,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:07" (3/3) ... [2021-06-10 12:25:07,770 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2021-06-10 12:25:07,775 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:25:07,779 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:25:07,780 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:25:07,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,808 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,812 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,813 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,814 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,816 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:07,824 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:25:07,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:25:07,860 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:25:07,860 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:25:07,861 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:25:07,861 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:25:07,861 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:25:07,861 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:25:07,861 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:25:07,861 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:25:07,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:25:07,901 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-06-10 12:25:07,902 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:07,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 12:25:07,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-06-10 12:25:07,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-06-10 12:25:07,925 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-06-10 12:25:07,926 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:07,926 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:07,927 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 12:25:07,927 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:07,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:07,932 INFO L82 PathProgramCache]: Analyzing trace with hash 882178177, now seen corresponding path program 1 times [2021-06-10 12:25:07,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:07,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113631396] [2021-06-10 12:25:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:08,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:08,291 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:08,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:08,318 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:08,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:08,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:08,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:08,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:08,397 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 12:25:08,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113631396] [2021-06-10 12:25:08,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:08,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:25:08,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879643115] [2021-06-10 12:25:08,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:25:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:08,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:25:08,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:25:08,428 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:25:08,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 12:25:08,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:08,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:25:08,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:08,822 INFO L129 PetriNetUnfolder]: 177/507 cut-off events. [2021-06-10 12:25:08,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:08,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 507 events. 177/507 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3016 event pairs, 48 based on Foata normal form. 19/509 useless extension candidates. Maximal degree in co-relation 813. Up to 144 conditions per place. [2021-06-10 12:25:08,830 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 15 selfloop transitions, 5 changer transitions 28/92 dead transitions. [2021-06-10 12:25:08,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 289 flow [2021-06-10 12:25:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:25:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:25:08,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2021-06-10 12:25:08,878 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8462709284627092 [2021-06-10 12:25:08,879 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2021-06-10 12:25:08,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2021-06-10 12:25:08,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:08,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2021-06-10 12:25:08,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:08,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 12:25:08,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 12:25:08,897 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 9 states and 556 transitions. [2021-06-10 12:25:08,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 289 flow [2021-06-10 12:25:08,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:25:08,904 INFO L241 Difference]: Finished difference. Result has 79 places, 60 transitions, 179 flow [2021-06-10 12:25:08,906 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=179, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2021-06-10 12:25:08,906 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2021-06-10 12:25:08,907 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 179 flow [2021-06-10 12:25:08,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 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 12:25:08,907 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:08,907 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, 1] [2021-06-10 12:25:08,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:25:08,908 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:08,908 INFO L82 PathProgramCache]: Analyzing trace with hash -695383550, now seen corresponding path program 1 times [2021-06-10 12:25:08,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:08,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983510300] [2021-06-10 12:25:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:08,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:08,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:08,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:08,971 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:08,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:08,982 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:08,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:09,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:09,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:09,039 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 12:25:09,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983510300] [2021-06-10 12:25:09,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:09,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:09,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412770353] [2021-06-10 12:25:09,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:09,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:09,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:09,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:09,043 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:25:09,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 179 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:25:09,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:09,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:25:09,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:09,386 INFO L129 PetriNetUnfolder]: 115/412 cut-off events. [2021-06-10 12:25:09,386 INFO L130 PetriNetUnfolder]: For 632/802 co-relation queries the response was YES. [2021-06-10 12:25:09,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 412 events. 115/412 cut-off events. For 632/802 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2351 event pairs, 20 based on Foata normal form. 13/414 useless extension candidates. Maximal degree in co-relation 1119. Up to 115 conditions per place. [2021-06-10 12:25:09,392 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 17 selfloop transitions, 7 changer transitions 34/102 dead transitions. [2021-06-10 12:25:09,392 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 586 flow [2021-06-10 12:25:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:25:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:25:09,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 786 transitions. [2021-06-10 12:25:09,405 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8282402528977871 [2021-06-10 12:25:09,406 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 786 transitions. [2021-06-10 12:25:09,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 786 transitions. [2021-06-10 12:25:09,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:09,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 786 transitions. [2021-06-10 12:25:09,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.46153846153846) internal successors, (786), 13 states have internal predecessors, (786), 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 12:25:09,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:25:09,414 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:25:09,415 INFO L185 Difference]: Start difference. First operand has 79 places, 60 transitions, 179 flow. Second operand 13 states and 786 transitions. [2021-06-10 12:25:09,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 586 flow [2021-06-10 12:25:09,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 546 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-10 12:25:09,425 INFO L241 Difference]: Finished difference. Result has 92 places, 62 transitions, 234 flow [2021-06-10 12:25:09,426 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=234, PETRI_PLACES=92, PETRI_TRANSITIONS=62} [2021-06-10 12:25:09,426 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2021-06-10 12:25:09,427 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 62 transitions, 234 flow [2021-06-10 12:25:09,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 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 12:25:09,427 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:09,428 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, 1] [2021-06-10 12:25:09,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:25:09,428 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2093368638, now seen corresponding path program 1 times [2021-06-10 12:25:09,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:09,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714687003] [2021-06-10 12:25:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:09,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:09,552 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:09,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:09,565 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:09,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:09,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:09,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:09,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:09,614 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 12:25:09,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714687003] [2021-06-10 12:25:09,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596677633] [2021-06-10 12:25:09,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:09,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:09,618 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:25:09,618 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 62 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 12:25:09,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:09,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:25:09,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:09,993 INFO L129 PetriNetUnfolder]: 240/693 cut-off events. [2021-06-10 12:25:09,994 INFO L130 PetriNetUnfolder]: For 2029/2591 co-relation queries the response was YES. [2021-06-10 12:25:09,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 693 events. 240/693 cut-off events. For 2029/2591 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4286 event pairs, 11 based on Foata normal form. 31/710 useless extension candidates. Maximal degree in co-relation 2171. Up to 153 conditions per place. [2021-06-10 12:25:10,001 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 28 selfloop transitions, 15 changer transitions 59/144 dead transitions. [2021-06-10 12:25:10,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 144 transitions, 1062 flow [2021-06-10 12:25:10,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:25:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:25:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1010 transitions. [2021-06-10 12:25:10,004 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8138597904915391 [2021-06-10 12:25:10,005 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1010 transitions. [2021-06-10 12:25:10,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1010 transitions. [2021-06-10 12:25:10,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:10,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1010 transitions. [2021-06-10 12:25:10,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 59.411764705882355) internal successors, (1010), 17 states have internal predecessors, (1010), 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 12:25:10,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 12:25:10,010 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 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 12:25:10,010 INFO L185 Difference]: Start difference. First operand has 92 places, 62 transitions, 234 flow. Second operand 17 states and 1010 transitions. [2021-06-10 12:25:10,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 144 transitions, 1062 flow [2021-06-10 12:25:10,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 144 transitions, 906 flow, removed 60 selfloop flow, removed 8 redundant places. [2021-06-10 12:25:10,020 INFO L241 Difference]: Finished difference. Result has 107 places, 70 transitions, 398 flow [2021-06-10 12:25:10,020 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=398, PETRI_PLACES=107, PETRI_TRANSITIONS=70} [2021-06-10 12:25:10,020 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 40 predicate places. [2021-06-10 12:25:10,020 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 70 transitions, 398 flow [2021-06-10 12:25:10,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 12:25:10,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:10,021 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, 1, 1, 1] [2021-06-10 12:25:10,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:25:10,021 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1741314975, now seen corresponding path program 1 times [2021-06-10 12:25:10,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:10,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598671451] [2021-06-10 12:25:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:10,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:10,062 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:10,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:10,076 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:10,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:10,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,115 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 12:25:10,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598671451] [2021-06-10 12:25:10,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:10,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:10,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672960427] [2021-06-10 12:25:10,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:10,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:10,119 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:25:10,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 70 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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 12:25:10,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:10,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:25:10,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:10,344 INFO L129 PetriNetUnfolder]: 81/376 cut-off events. [2021-06-10 12:25:10,344 INFO L130 PetriNetUnfolder]: For 2977/3843 co-relation queries the response was YES. [2021-06-10 12:25:10,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 376 events. 81/376 cut-off events. For 2977/3843 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2171 event pairs, 0 based on Foata normal form. 22/389 useless extension candidates. Maximal degree in co-relation 1507. Up to 77 conditions per place. [2021-06-10 12:25:10,350 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 23 selfloop transitions, 23 changer transitions 21/112 dead transitions. [2021-06-10 12:25:10,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 112 transitions, 1026 flow [2021-06-10 12:25:10,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:25:10,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:25:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 776 transitions. [2021-06-10 12:25:10,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8177028451001054 [2021-06-10 12:25:10,353 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 776 transitions. [2021-06-10 12:25:10,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 776 transitions. [2021-06-10 12:25:10,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:10,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 776 transitions. [2021-06-10 12:25:10,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.69230769230769) internal successors, (776), 13 states have internal predecessors, (776), 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 12:25:10,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:25:10,357 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 12:25:10,358 INFO L185 Difference]: Start difference. First operand has 107 places, 70 transitions, 398 flow. Second operand 13 states and 776 transitions. [2021-06-10 12:25:10,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 112 transitions, 1026 flow [2021-06-10 12:25:10,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 112 transitions, 840 flow, removed 93 selfloop flow, removed 12 redundant places. [2021-06-10 12:25:10,369 INFO L241 Difference]: Finished difference. Result has 105 places, 82 transitions, 548 flow [2021-06-10 12:25:10,370 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=548, PETRI_PLACES=105, PETRI_TRANSITIONS=82} [2021-06-10 12:25:10,370 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 38 predicate places. [2021-06-10 12:25:10,370 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 82 transitions, 548 flow [2021-06-10 12:25:10,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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 12:25:10,370 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:10,370 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, 1, 1, 1] [2021-06-10 12:25:10,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:25:10,371 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:10,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:10,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1863453281, now seen corresponding path program 1 times [2021-06-10 12:25:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:10,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224081620] [2021-06-10 12:25:10,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:10,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:10,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:10,418 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:10,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:10,428 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:10,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:10,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,468 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 12:25:10,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224081620] [2021-06-10 12:25:10,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:10,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:10,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684170287] [2021-06-10 12:25:10,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:10,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:10,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:10,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:10,470 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-06-10 12:25:10,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 82 transitions, 548 flow. Second operand has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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 12:25:10,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:10,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-06-10 12:25:10,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:10,686 INFO L129 PetriNetUnfolder]: 86/354 cut-off events. [2021-06-10 12:25:10,686 INFO L130 PetriNetUnfolder]: For 2473/4268 co-relation queries the response was YES. [2021-06-10 12:25:10,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 354 events. 86/354 cut-off events. For 2473/4268 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1884 event pairs, 3 based on Foata normal form. 30/376 useless extension candidates. Maximal degree in co-relation 1407. Up to 75 conditions per place. [2021-06-10 12:25:10,689 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 17 selfloop transitions, 8 changer transitions 75/142 dead transitions. [2021-06-10 12:25:10,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 142 transitions, 1448 flow [2021-06-10 12:25:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:25:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:25:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 647 transitions. [2021-06-10 12:25:10,692 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8057285180572852 [2021-06-10 12:25:10,692 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 647 transitions. [2021-06-10 12:25:10,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 647 transitions. [2021-06-10 12:25:10,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:10,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 647 transitions. [2021-06-10 12:25:10,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 58.81818181818182) internal successors, (647), 11 states have internal predecessors, (647), 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 12:25:10,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:25:10,696 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:25:10,696 INFO L185 Difference]: Start difference. First operand has 105 places, 82 transitions, 548 flow. Second operand 11 states and 647 transitions. [2021-06-10 12:25:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 142 transitions, 1448 flow [2021-06-10 12:25:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 142 transitions, 1243 flow, removed 90 selfloop flow, removed 7 redundant places. [2021-06-10 12:25:10,705 INFO L241 Difference]: Finished difference. Result has 113 places, 61 transitions, 299 flow [2021-06-10 12:25:10,705 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=299, PETRI_PLACES=113, PETRI_TRANSITIONS=61} [2021-06-10 12:25:10,705 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 46 predicate places. [2021-06-10 12:25:10,706 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 61 transitions, 299 flow [2021-06-10 12:25:10,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.5) internal successors, (444), 8 states have internal predecessors, (444), 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 12:25:10,706 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:10,706 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, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:10,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:25:10,706 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash 500104438, now seen corresponding path program 1 times [2021-06-10 12:25:10,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:10,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385511320] [2021-06-10 12:25:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:10,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:10,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:10,754 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:10,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:10,764 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:10,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:10,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:10,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,809 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 12:25:10,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385511320] [2021-06-10 12:25:10,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:10,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:10,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797568246] [2021-06-10 12:25:10,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:10,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:10,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:10,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:10,812 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73 [2021-06-10 12:25:10,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 61 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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 12:25:10,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:10,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73 [2021-06-10 12:25:10,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:10,913 INFO L129 PetriNetUnfolder]: 8/126 cut-off events. [2021-06-10 12:25:10,913 INFO L130 PetriNetUnfolder]: For 583/625 co-relation queries the response was YES. [2021-06-10 12:25:10,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 126 events. 8/126 cut-off events. For 583/625 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 371 event pairs, 0 based on Foata normal form. 6/130 useless extension candidates. Maximal degree in co-relation 375. Up to 13 conditions per place. [2021-06-10 12:25:10,914 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 12 selfloop transitions, 5 changer transitions 15/75 dead transitions. [2021-06-10 12:25:10,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 75 transitions, 525 flow [2021-06-10 12:25:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:25:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:25:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 479 transitions. [2021-06-10 12:25:10,917 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8202054794520548 [2021-06-10 12:25:10,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 479 transitions. [2021-06-10 12:25:10,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 479 transitions. [2021-06-10 12:25:10,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:10,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 479 transitions. [2021-06-10 12:25:10,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.875) internal successors, (479), 8 states have internal predecessors, (479), 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 12:25:10,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 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 12:25:10,920 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 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 12:25:10,920 INFO L185 Difference]: Start difference. First operand has 113 places, 61 transitions, 299 flow. Second operand 8 states and 479 transitions. [2021-06-10 12:25:10,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 75 transitions, 525 flow [2021-06-10 12:25:10,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 313 flow, removed 59 selfloop flow, removed 26 redundant places. [2021-06-10 12:25:10,924 INFO L241 Difference]: Finished difference. Result has 86 places, 56 transitions, 177 flow [2021-06-10 12:25:10,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=177, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2021-06-10 12:25:10,924 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2021-06-10 12:25:10,925 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 177 flow [2021-06-10 12:25:10,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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 12:25:10,925 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:10,925 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, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:10,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:25:10,926 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1926470118, now seen corresponding path program 2 times [2021-06-10 12:25:10,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:10,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455082386] [2021-06-10 12:25:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:10,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:10,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:10,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,003 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:11,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:11,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:11,031 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:11,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:11,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:11,042 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 12:25:11,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455082386] [2021-06-10 12:25:11,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:11,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:25:11,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139166957] [2021-06-10 12:25:11,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:25:11,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:11,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:25:11,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:25:11,045 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:25:11,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 12:25:11,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:11,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:25:11,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:11,169 INFO L129 PetriNetUnfolder]: 93/305 cut-off events. [2021-06-10 12:25:11,170 INFO L130 PetriNetUnfolder]: For 51/55 co-relation queries the response was YES. [2021-06-10 12:25:11,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 305 events. 93/305 cut-off events. For 51/55 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1575 event pairs, 12 based on Foata normal form. 8/302 useless extension candidates. Maximal degree in co-relation 523. Up to 86 conditions per place. [2021-06-10 12:25:11,171 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 9 selfloop transitions, 5 changer transitions 21/81 dead transitions. [2021-06-10 12:25:11,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 81 transitions, 297 flow [2021-06-10 12:25:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:25:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:25:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 568 transitions. [2021-06-10 12:25:11,173 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8645357686453576 [2021-06-10 12:25:11,174 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 568 transitions. [2021-06-10 12:25:11,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 568 transitions. [2021-06-10 12:25:11,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:11,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 568 transitions. [2021-06-10 12:25:11,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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 12:25:11,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 12:25:11,177 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 12:25:11,177 INFO L185 Difference]: Start difference. First operand has 86 places, 56 transitions, 177 flow. Second operand 9 states and 568 transitions. [2021-06-10 12:25:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 81 transitions, 297 flow [2021-06-10 12:25:11,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 266 flow, removed 7 selfloop flow, removed 13 redundant places. [2021-06-10 12:25:11,181 INFO L241 Difference]: Finished difference. Result has 83 places, 58 transitions, 196 flow [2021-06-10 12:25:11,181 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=83, PETRI_TRANSITIONS=58} [2021-06-10 12:25:11,182 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2021-06-10 12:25:11,182 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 58 transitions, 196 flow [2021-06-10 12:25:11,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 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 12:25:11,182 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:11,182 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, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:11,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:25:11,182 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:11,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1220901564, now seen corresponding path program 1 times [2021-06-10 12:25:11,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:11,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102405322] [2021-06-10 12:25:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:11,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:11,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,259 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:11,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:11,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:11,288 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:11,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:11,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:11,298 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 12:25:11,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102405322] [2021-06-10 12:25:11,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:11,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:11,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230530885] [2021-06-10 12:25:11,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:11,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:11,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:11,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:11,300 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:25:11,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 58 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 12:25:11,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:11,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:25:11,301 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:11,431 INFO L129 PetriNetUnfolder]: 42/170 cut-off events. [2021-06-10 12:25:11,432 INFO L130 PetriNetUnfolder]: For 228/266 co-relation queries the response was YES. [2021-06-10 12:25:11,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 170 events. 42/170 cut-off events. For 228/266 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 652 event pairs, 0 based on Foata normal form. 9/176 useless extension candidates. Maximal degree in co-relation 477. Up to 64 conditions per place. [2021-06-10 12:25:11,433 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 5 selfloop transitions, 7 changer transitions 25/83 dead transitions. [2021-06-10 12:25:11,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 447 flow [2021-06-10 12:25:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:25:11,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:25:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 629 transitions. [2021-06-10 12:25:11,435 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8616438356164383 [2021-06-10 12:25:11,435 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 629 transitions. [2021-06-10 12:25:11,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 629 transitions. [2021-06-10 12:25:11,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:11,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 629 transitions. [2021-06-10 12:25:11,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 62.9) internal successors, (629), 10 states have internal predecessors, (629), 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 12:25:11,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 12:25:11,439 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 12:25:11,439 INFO L185 Difference]: Start difference. First operand has 83 places, 58 transitions, 196 flow. Second operand 10 states and 629 transitions. [2021-06-10 12:25:11,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 447 flow [2021-06-10 12:25:11,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 418 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-10 12:25:11,441 INFO L241 Difference]: Finished difference. Result has 88 places, 58 transitions, 216 flow [2021-06-10 12:25:11,441 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=88, PETRI_TRANSITIONS=58} [2021-06-10 12:25:11,442 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2021-06-10 12:25:11,442 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 58 transitions, 216 flow [2021-06-10 12:25:11,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 12:25:11,442 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:11,442 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:11,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:25:11,442 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:11,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:11,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1460799759, now seen corresponding path program 1 times [2021-06-10 12:25:11,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:11,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721479264] [2021-06-10 12:25:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:11,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:11,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:11,485 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:11,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:11,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:11,510 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:11,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:11,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:11,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:11,522 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 12:25:11,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721479264] [2021-06-10 12:25:11,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:11,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:11,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312039235] [2021-06-10 12:25:11,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:11,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:11,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:11,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:11,524 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-06-10 12:25:11,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 58 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 12:25:11,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:11,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-06-10 12:25:11,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:11,649 INFO L129 PetriNetUnfolder]: 4/67 cut-off events. [2021-06-10 12:25:11,649 INFO L130 PetriNetUnfolder]: For 178/201 co-relation queries the response was YES. [2021-06-10 12:25:11,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 67 events. 4/67 cut-off events. For 178/201 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 98 event pairs, 0 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 174. Up to 13 conditions per place. [2021-06-10 12:25:11,650 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-06-10 12:25:11,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 61 transitions, 312 flow [2021-06-10 12:25:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:25:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:25:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2021-06-10 12:25:11,652 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8368617683686177 [2021-06-10 12:25:11,652 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2021-06-10 12:25:11,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2021-06-10 12:25:11,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:11,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2021-06-10 12:25:11,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 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 12:25:11,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:25:11,656 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 12:25:11,656 INFO L185 Difference]: Start difference. First operand has 88 places, 58 transitions, 216 flow. Second operand 11 states and 672 transitions. [2021-06-10 12:25:11,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 61 transitions, 312 flow [2021-06-10 12:25:11,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 61 transitions, 248 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-06-10 12:25:11,658 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-06-10 12:25:11,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-06-10 12:25:11,658 INFO L343 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2021-06-10 12:25:11,658 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-06-10 12:25:11,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 12:25:11,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:25:11,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:25:11 BasicIcfg [2021-06-10 12:25:11,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:25:11,664 INFO L168 Benchmark]: Toolchain (without parser) took 4943.95 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 323.1 MB in the beginning and 208.8 MB in the end (delta: 114.3 MB). Peak memory consumption was 189.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,664 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 360.7 MB. Free memory is still 341.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:25:11,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.21 ms. Allocated memory is still 360.7 MB. Free memory was 322.9 MB in the beginning and 324.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.14 ms. Allocated memory is still 360.7 MB. Free memory was 324.2 MB in the beginning and 322.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,665 INFO L168 Benchmark]: Boogie Preprocessor took 18.87 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 321.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,666 INFO L168 Benchmark]: RCFGBuilder took 516.96 ms. Allocated memory is still 360.7 MB. Free memory was 321.0 MB in the beginning and 296.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,666 INFO L168 Benchmark]: TraceAbstraction took 3898.43 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 296.9 MB in the beginning and 208.8 MB in the end (delta: 88.1 MB). Peak memory consumption was 164.7 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:11,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 360.7 MB. Free memory is still 341.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 470.21 ms. Allocated memory is still 360.7 MB. Free memory was 322.9 MB in the beginning and 324.2 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 33.14 ms. Allocated memory is still 360.7 MB. Free memory was 324.2 MB in the beginning and 322.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.87 ms. Allocated memory is still 360.7 MB. Free memory was 322.1 MB in the beginning and 321.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 516.96 ms. Allocated memory is still 360.7 MB. Free memory was 321.0 MB in the beginning and 296.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3898.43 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 296.9 MB in the beginning and 208.8 MB in the end (delta: 88.1 MB). Peak memory consumption was 164.7 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3803.2ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2295.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 143 SDtfs, 327 SDslu, 450 SDs, 0 SdLazy, 414 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 368.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1376.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=548occurred in iteration=4, InterpolantAutomatonStates: 101, 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: 32.5ms SsaConstructionTime, 209.9ms SatisfiabilityAnalysisTime, 1007.9ms InterpolantComputationTime, 394 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 1501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...