/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:03:03,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:03:03,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:03:03,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 11:03:03,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 11:03:03,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 11:03:03,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 11:03:03,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 11:03:03,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 11:03:03,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 11:03:03,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 11:03:03,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 11:03:03,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:03:03,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:03:03,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:03:03,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:03:03,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:03:03,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:03:03,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:03:03,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:03:03,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:03:03,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:03:03,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:03:03,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:03:03,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 11:03:03,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 11:03:03,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 11:03:03,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 11:03:03,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 11:03:03,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 11:03:03,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 11:03:03,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 11:03:03,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 11:03:03,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 11:03:03,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 11:03:03,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 11:03:03,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 11:03:03,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 11:03:03,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:03:03,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:03:03,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:03:03,137 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-VariableLbe.epf [2021-03-24 11:03:03,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:03:03,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:03:03,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:03:03,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:03:03,176 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:03:03,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:03:03,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:03:03,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:03:03,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:03:03,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:03:03,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:03:03,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:03:03,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:03:03,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:03:03,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:03:03,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:03:03,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:03:03,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:03:03,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:03:03,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:03:03,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:03:03,180 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:03:03,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:03:03,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:03:03,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:03:03,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:03:03,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:03:03,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:03:03,499 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:03:03,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-24 11:03:03,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecef0e2a2/a798c46e02164778a6472f31d4bf815f/FLAGa81700cdf [2021-03-24 11:03:04,099 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:03:04,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-24 11:03:04,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecef0e2a2/a798c46e02164778a6472f31d4bf815f/FLAGa81700cdf [2021-03-24 11:03:04,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecef0e2a2/a798c46e02164778a6472f31d4bf815f [2021-03-24 11:03:04,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:03:04,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:03:04,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:03:04,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:03:04,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:03:04,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:04,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ab5f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04, skipping insertion in model container [2021-03-24 11:03:04,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:04,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:03:04,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:03:04,773 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/safe014_pso.oepc.i[950,963] [2021-03-24 11:03:04,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:03:04,883 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:03:04,893 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/safe014_pso.oepc.i[950,963] [2021-03-24 11:03:04,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:03:04,977 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:03:04,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04 WrapperNode [2021-03-24 11:03:04,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:03:04,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:03:04,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:03:04,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:03:04,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:04,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:03:05,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:03:05,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:03:05,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:03:05,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... [2021-03-24 11:03:05,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:03:05,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:03:05,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:03:05,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:03:05,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:03:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:03:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:03:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:03:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:03:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:03:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:03:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:03:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:03:05,123 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:03:05,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:03:05,395 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:03:05,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:03:05 BoogieIcfgContainer [2021-03-24 11:03:05,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:03:05,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:03:05,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:03:05,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:03:05,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:03:04" (1/3) ... [2021-03-24 11:03:05,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762bdbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:03:05, skipping insertion in model container [2021-03-24 11:03:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:03:04" (2/3) ... [2021-03-24 11:03:05,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@762bdbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:03:05, skipping insertion in model container [2021-03-24 11:03:05,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:03:05" (3/3) ... [2021-03-24 11:03:05,403 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-24 11:03:05,408 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:03:05,411 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:03:05,412 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:03:05,458 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,462 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,462 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,465 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,467 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,467 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,471 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,471 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,472 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,474 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,474 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:03:05,476 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:03:05,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:03:05,510 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:03:05,510 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:03:05,510 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:03:05,510 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:03:05,510 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:03:05,510 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:03:05,510 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:03:05,510 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:03:05,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:03:05,550 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 11:03:05,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:05,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:03:05,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:03:05,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 11:03:05,565 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:03:05,575 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:03:05,580 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:03:05,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 11:03:05,617 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 11:03:05,617 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:05,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 11:03:05,620 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:03:07,122 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 11:03:07,267 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-24 11:03:07,325 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-24 11:03:07,326 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-24 11:03:07,328 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1764 [2021-03-24 11:03:07,344 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-24 11:03:07,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:07,345 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:07,345 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:07,345 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:07,352 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-24 11:03:07,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:07,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908076987] [2021-03-24 11:03:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:07,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:07,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:07,634 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:07,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:07,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:07,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:07,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908076987] [2021-03-24 11:03:07,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:07,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:07,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484807631] [2021-03-24 11:03:07,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:07,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:07,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:07,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:07,691 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:03:07,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:07,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:03:07,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:07,833 INFO L129 PetriNetUnfolder]: 78/208 cut-off events. [2021-03-24 11:03:07,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:03:07,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 208 events. 78/208 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1017 event pairs, 4 based on Foata normal form. 23/218 useless extension candidates. Maximal degree in co-relation 358. Up to 58 conditions per place. [2021-03-24 11:03:07,838 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 12 selfloop transitions, 6 changer transitions 15/45 dead transitions. [2021-03-24 11:03:07,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 165 flow [2021-03-24 11:03:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2021-03-24 11:03:07,856 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7598522167487685 [2021-03-24 11:03:07,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2021-03-24 11:03:07,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2021-03-24 11:03:07,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:07,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2021-03-24 11:03:07,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,875 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,877 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 7 states and 617 transitions. [2021-03-24 11:03:07,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 165 flow [2021-03-24 11:03:07,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:03:07,881 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 106 flow [2021-03-24 11:03:07,882 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-24 11:03:07,883 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-24 11:03:07,883 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 106 flow [2021-03-24 11:03:07,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,884 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:07,884 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:07,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:03:07,884 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:07,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1039221852, now seen corresponding path program 1 times [2021-03-24 11:03:07,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:07,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146879507] [2021-03-24 11:03:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:07,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:07,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:07,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:07,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:07,975 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:07,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:07,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:07,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:07,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146879507] [2021-03-24 11:03:07,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:07,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:07,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186006145] [2021-03-24 11:03:07,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:07,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:07,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:07,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:07,993 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:03:07,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:07,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:07,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:03:07,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,089 INFO L129 PetriNetUnfolder]: 39/133 cut-off events. [2021-03-24 11:03:08,090 INFO L130 PetriNetUnfolder]: For 214/284 co-relation queries the response was YES. [2021-03-24 11:03:08,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 133 events. 39/133 cut-off events. For 214/284 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 567 event pairs, 1 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 413. Up to 48 conditions per place. [2021-03-24 11:03:08,091 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 11 selfloop transitions, 11 changer transitions 11/45 dead transitions. [2021-03-24 11:03:08,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 294 flow [2021-03-24 11:03:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2021-03-24 11:03:08,096 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7524630541871922 [2021-03-24 11:03:08,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2021-03-24 11:03:08,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2021-03-24 11:03:08,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2021-03-24 11:03:08,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,101 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 106 flow. Second operand 7 states and 611 transitions. [2021-03-24 11:03:08,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 294 flow [2021-03-24 11:03:08,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 286 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 11:03:08,105 INFO L241 Difference]: Finished difference. Result has 47 places, 30 transitions, 195 flow [2021-03-24 11:03:08,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2021-03-24 11:03:08,106 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2021-03-24 11:03:08,106 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 195 flow [2021-03-24 11:03:08,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:03:08,107 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,108 INFO L82 PathProgramCache]: Analyzing trace with hash 838624182, now seen corresponding path program 1 times [2021-03-24 11:03:08,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457136640] [2021-03-24 11:03:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:08,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,189 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:08,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:08,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457136640] [2021-03-24 11:03:08,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:08,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12982118] [2021-03-24 11:03:08,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:08,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:08,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:08,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:03:08,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 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) [2021-03-24 11:03:08,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:03:08,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,280 INFO L129 PetriNetUnfolder]: 25/107 cut-off events. [2021-03-24 11:03:08,280 INFO L130 PetriNetUnfolder]: For 347/477 co-relation queries the response was YES. [2021-03-24 11:03:08,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 107 events. 25/107 cut-off events. For 347/477 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 439 event pairs, 0 based on Foata normal form. 13/117 useless extension candidates. Maximal degree in co-relation 403. Up to 38 conditions per place. [2021-03-24 11:03:08,284 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 14 selfloop transitions, 14 changer transitions 7/47 dead transitions. [2021-03-24 11:03:08,284 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 416 flow [2021-03-24 11:03:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 606 transitions. [2021-03-24 11:03:08,289 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7463054187192119 [2021-03-24 11:03:08,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 606 transitions. [2021-03-24 11:03:08,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 606 transitions. [2021-03-24 11:03:08,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 606 transitions. [2021-03-24 11:03:08,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,294 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,294 INFO L185 Difference]: Start difference. First operand has 47 places, 30 transitions, 195 flow. Second operand 7 states and 606 transitions. [2021-03-24 11:03:08,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 416 flow [2021-03-24 11:03:08,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 396 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-24 11:03:08,302 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 323 flow [2021-03-24 11:03:08,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-24 11:03:08,302 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2021-03-24 11:03:08,302 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 323 flow [2021-03-24 11:03:08,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 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) [2021-03-24 11:03:08,302 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:03:08,303 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1932997562, now seen corresponding path program 1 times [2021-03-24 11:03:08,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574331389] [2021-03-24 11:03:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,372 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:08,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:08,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574331389] [2021-03-24 11:03:08,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:08,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498410598] [2021-03-24 11:03:08,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:08,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:08,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:03:08,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:03:08,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,440 INFO L129 PetriNetUnfolder]: 20/91 cut-off events. [2021-03-24 11:03:08,440 INFO L130 PetriNetUnfolder]: For 345/450 co-relation queries the response was YES. [2021-03-24 11:03:08,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 91 events. 20/91 cut-off events. For 345/450 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 348 event pairs, 0 based on Foata normal form. 11/101 useless extension candidates. Maximal degree in co-relation 409. Up to 31 conditions per place. [2021-03-24 11:03:08,442 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 16 selfloop transitions, 18 changer transitions 3/49 dead transitions. [2021-03-24 11:03:08,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 538 flow [2021-03-24 11:03:08,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:08,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2021-03-24 11:03:08,445 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7438423645320197 [2021-03-24 11:03:08,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2021-03-24 11:03:08,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2021-03-24 11:03:08,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2021-03-24 11:03:08,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,448 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,448 INFO L185 Difference]: Start difference. First operand has 53 places, 37 transitions, 323 flow. Second operand 7 states and 604 transitions. [2021-03-24 11:03:08,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 538 flow [2021-03-24 11:03:08,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 495 flow, removed 16 selfloop flow, removed 5 redundant places. [2021-03-24 11:03:08,453 INFO L241 Difference]: Finished difference. Result has 57 places, 42 transitions, 445 flow [2021-03-24 11:03:08,453 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2021-03-24 11:03:08,454 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2021-03-24 11:03:08,454 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 445 flow [2021-03-24 11:03:08,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,454 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,454 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:03:08,454 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1648643309, now seen corresponding path program 1 times [2021-03-24 11:03:08,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009359486] [2021-03-24 11:03:08,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:08,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,497 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:08,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:08,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009359486] [2021-03-24 11:03:08,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:03:08,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375345043] [2021-03-24 11:03:08,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:03:08,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:03:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:03:08,514 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 116 [2021-03-24 11:03:08,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 116 [2021-03-24 11:03:08,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,578 INFO L129 PetriNetUnfolder]: 42/139 cut-off events. [2021-03-24 11:03:08,579 INFO L130 PetriNetUnfolder]: For 1048/1264 co-relation queries the response was YES. [2021-03-24 11:03:08,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 139 events. 42/139 cut-off events. For 1048/1264 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 572 event pairs, 0 based on Foata normal form. 8/145 useless extension candidates. Maximal degree in co-relation 733. Up to 44 conditions per place. [2021-03-24 11:03:08,580 INFO L132 encePairwiseOnDemand]: 107/116 looper letters, 17 selfloop transitions, 10 changer transitions 30/68 dead transitions. [2021-03-24 11:03:08,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 912 flow [2021-03-24 11:03:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2021-03-24 11:03:08,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7327586206896551 [2021-03-24 11:03:08,583 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2021-03-24 11:03:08,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2021-03-24 11:03:08,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2021-03-24 11:03:08,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,587 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,587 INFO L185 Difference]: Start difference. First operand has 57 places, 42 transitions, 445 flow. Second operand 7 states and 595 transitions. [2021-03-24 11:03:08,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 912 flow [2021-03-24 11:03:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 883 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 11:03:08,593 INFO L241 Difference]: Finished difference. Result has 59 places, 32 transitions, 315 flow [2021-03-24 11:03:08,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2021-03-24 11:03:08,593 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-24 11:03:08,593 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 315 flow [2021-03-24 11:03:08,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,594 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,594 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:03:08,594 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2066078221, now seen corresponding path program 1 times [2021-03-24 11:03:08,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712351391] [2021-03-24 11:03:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712351391] [2021-03-24 11:03:08,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:03:08,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543958018] [2021-03-24 11:03:08,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:03:08,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:03:08,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:03:08,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:03:08,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:03:08,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,692 INFO L129 PetriNetUnfolder]: 62/166 cut-off events. [2021-03-24 11:03:08,692 INFO L130 PetriNetUnfolder]: For 810/838 co-relation queries the response was YES. [2021-03-24 11:03:08,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 166 events. 62/166 cut-off events. For 810/838 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 733 event pairs, 22 based on Foata normal form. 16/173 useless extension candidates. Maximal degree in co-relation 546. Up to 92 conditions per place. [2021-03-24 11:03:08,694 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 7 selfloop transitions, 7 changer transitions 2/42 dead transitions. [2021-03-24 11:03:08,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 367 flow [2021-03-24 11:03:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:03:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:03:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 11:03:08,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 11:03:08,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 11:03:08,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 11:03:08,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 11:03:08,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,698 INFO L185 Difference]: Start difference. First operand has 59 places, 32 transitions, 315 flow. Second operand 5 states and 448 transitions. [2021-03-24 11:03:08,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 367 flow [2021-03-24 11:03:08,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 325 flow, removed 8 selfloop flow, removed 9 redundant places. [2021-03-24 11:03:08,702 INFO L241 Difference]: Finished difference. Result has 55 places, 38 transitions, 327 flow [2021-03-24 11:03:08,702 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2021-03-24 11:03:08,702 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2021-03-24 11:03:08,702 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 327 flow [2021-03-24 11:03:08,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,703 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:03:08,703 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -20522478, now seen corresponding path program 1 times [2021-03-24 11:03:08,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057185294] [2021-03-24 11:03:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057185294] [2021-03-24 11:03:08,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:08,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436151998] [2021-03-24 11:03:08,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:08,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:08,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:08,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:03:08,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:03:08,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,803 INFO L129 PetriNetUnfolder]: 45/142 cut-off events. [2021-03-24 11:03:08,803 INFO L130 PetriNetUnfolder]: For 509/699 co-relation queries the response was YES. [2021-03-24 11:03:08,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 142 events. 45/142 cut-off events. For 509/699 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 623 event pairs, 3 based on Foata normal form. 64/200 useless extension candidates. Maximal degree in co-relation 579. Up to 93 conditions per place. [2021-03-24 11:03:08,805 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 5 selfloop transitions, 13 changer transitions 4/48 dead transitions. [2021-03-24 11:03:08,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 429 flow [2021-03-24 11:03:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2021-03-24 11:03:08,807 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.770935960591133 [2021-03-24 11:03:08,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2021-03-24 11:03:08,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2021-03-24 11:03:08,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2021-03-24 11:03:08,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,811 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,811 INFO L185 Difference]: Start difference. First operand has 55 places, 38 transitions, 327 flow. Second operand 7 states and 626 transitions. [2021-03-24 11:03:08,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 429 flow [2021-03-24 11:03:08,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 48 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:03:08,814 INFO L241 Difference]: Finished difference. Result has 63 places, 44 transitions, 411 flow [2021-03-24 11:03:08,815 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2021-03-24 11:03:08,815 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-24 11:03:08,815 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 411 flow [2021-03-24 11:03:08,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:03:08,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:03:08,816 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1803149453, now seen corresponding path program 1 times [2021-03-24 11:03:08,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386282698] [2021-03-24 11:03:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:08,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:08,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:08,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:08,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386282698] [2021-03-24 11:03:08,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:08,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:03:08,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079768997] [2021-03-24 11:03:08,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:03:08,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:08,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:03:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:03:08,892 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 116 [2021-03-24 11:03:08,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 411 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:08,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 116 [2021-03-24 11:03:08,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:08,966 INFO L129 PetriNetUnfolder]: 28/113 cut-off events. [2021-03-24 11:03:08,966 INFO L130 PetriNetUnfolder]: For 720/1124 co-relation queries the response was YES. [2021-03-24 11:03:08,967 INFO L84 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 113 events. 28/113 cut-off events. For 720/1124 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 484 event pairs, 0 based on Foata normal form. 83/191 useless extension candidates. Maximal degree in co-relation 572. Up to 73 conditions per place. [2021-03-24 11:03:08,968 INFO L132 encePairwiseOnDemand]: 110/116 looper letters, 2 selfloop transitions, 17 changer transitions 8/48 dead transitions. [2021-03-24 11:03:08,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 48 transitions, 487 flow [2021-03-24 11:03:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 11:03:08,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 11:03:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2021-03-24 11:03:08,974 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-03-24 11:03:08,974 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2021-03-24 11:03:08,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2021-03-24 11:03:08,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:08,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2021-03-24 11:03:08,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,979 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,979 INFO L185 Difference]: Start difference. First operand has 63 places, 44 transitions, 411 flow. Second operand 9 states and 798 transitions. [2021-03-24 11:03:08,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 48 transitions, 487 flow [2021-03-24 11:03:08,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 48 transitions, 457 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-03-24 11:03:08,986 INFO L241 Difference]: Finished difference. Result has 72 places, 40 transitions, 374 flow [2021-03-24 11:03:08,986 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=374, PETRI_PLACES=72, PETRI_TRANSITIONS=40} [2021-03-24 11:03:08,986 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2021-03-24 11:03:08,986 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 40 transitions, 374 flow [2021-03-24 11:03:08,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:08,987 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:08,987 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] [2021-03-24 11:03:08,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:03:08,987 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:08,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:08,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1735227960, now seen corresponding path program 1 times [2021-03-24 11:03:08,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:08,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103913860] [2021-03-24 11:03:08,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:09,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:09,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,053 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:03:09,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:03:09,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:09,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103913860] [2021-03-24 11:03:09,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:09,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:03:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473598602] [2021-03-24 11:03:09,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:03:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:03:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:03:09,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-24 11:03:09,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 40 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:09,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-24 11:03:09,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:09,114 INFO L129 PetriNetUnfolder]: 17/90 cut-off events. [2021-03-24 11:03:09,115 INFO L130 PetriNetUnfolder]: For 490/511 co-relation queries the response was YES. [2021-03-24 11:03:09,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 90 events. 17/90 cut-off events. For 490/511 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 355 event pairs, 0 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 423. Up to 33 conditions per place. [2021-03-24 11:03:09,116 INFO L132 encePairwiseOnDemand]: 109/116 looper letters, 4 selfloop transitions, 5 changer transitions 16/43 dead transitions. [2021-03-24 11:03:09,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 43 transitions, 461 flow [2021-03-24 11:03:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 11:03:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 11:03:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2021-03-24 11:03:09,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7352216748768473 [2021-03-24 11:03:09,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2021-03-24 11:03:09,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2021-03-24 11:03:09,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:09,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2021-03-24 11:03:09,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 116.0) internal successors, (928), 8 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,124 INFO L185 Difference]: Start difference. First operand has 72 places, 40 transitions, 374 flow. Second operand 7 states and 597 transitions. [2021-03-24 11:03:09,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 43 transitions, 461 flow [2021-03-24 11:03:09,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 43 transitions, 376 flow, removed 20 selfloop flow, removed 10 redundant places. [2021-03-24 11:03:09,128 INFO L241 Difference]: Finished difference. Result has 69 places, 27 transitions, 194 flow [2021-03-24 11:03:09,128 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=69, PETRI_TRANSITIONS=27} [2021-03-24 11:03:09,129 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2021-03-24 11:03:09,129 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 27 transitions, 194 flow [2021-03-24 11:03:09,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,129 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:03:09,129 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] [2021-03-24 11:03:09,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:03:09,129 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:03:09,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:03:09,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1117701138, now seen corresponding path program 2 times [2021-03-24 11:03:09,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:03:09,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172689551] [2021-03-24 11:03:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:03:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:03:09,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:03:09,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:03:09,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:03:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:03:09,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172689551] [2021-03-24 11:03:09,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:03:09,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:03:09,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317931277] [2021-03-24 11:03:09,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:03:09,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:03:09,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:03:09,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:03:09,179 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 116 [2021-03-24 11:03:09,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 27 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:03:09,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 116 [2021-03-24 11:03:09,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:03:09,206 INFO L129 PetriNetUnfolder]: 5/30 cut-off events. [2021-03-24 11:03:09,206 INFO L130 PetriNetUnfolder]: For 116/117 co-relation queries the response was YES. [2021-03-24 11:03:09,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 30 events. 5/30 cut-off events. For 116/117 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2021-03-24 11:03:09,206 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2021-03-24 11:03:09,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 26 transitions, 204 flow [2021-03-24 11:03:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:03:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:03:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-03-24 11:03:09,208 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7724137931034483 [2021-03-24 11:03:09,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-03-24 11:03:09,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-03-24 11:03:09,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:03:09,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-03-24 11:03:09,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,211 INFO L185 Difference]: Start difference. First operand has 69 places, 27 transitions, 194 flow. Second operand 5 states and 448 transitions. [2021-03-24 11:03:09,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 26 transitions, 204 flow [2021-03-24 11:03:09,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 26 transitions, 134 flow, removed 11 selfloop flow, removed 21 redundant places. [2021-03-24 11:03:09,213 INFO L241 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2021-03-24 11:03:09,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2021-03-24 11:03:09,213 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-24 11:03:09,213 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2021-03-24 11:03:09,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 11:03:09,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 11:03:09,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:03:09 BasicIcfg [2021-03-24 11:03:09,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:03:09,218 INFO L168 Benchmark]: Toolchain (without parser) took 4656.68 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 235.1 MB in the beginning and 129.7 MB in the end (delta: 105.4 MB). Peak memory consumption was 204.8 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,219 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:03:09,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.21 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 235.1 MB in the beginning and 318.8 MB in the end (delta: -83.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,222 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 356.5 MB. Free memory was 318.8 MB in the beginning and 316.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,223 INFO L168 Benchmark]: Boogie Preprocessor took 20.19 ms. Allocated memory is still 356.5 MB. Free memory was 316.8 MB in the beginning and 315.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,225 INFO L168 Benchmark]: RCFGBuilder took 361.97 ms. Allocated memory is still 356.5 MB. Free memory was 315.3 MB in the beginning and 331.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,226 INFO L168 Benchmark]: TraceAbstraction took 3819.22 ms. Allocated memory is still 356.5 MB. Free memory was 330.9 MB in the beginning and 129.7 MB in the end (delta: 201.2 MB). Peak memory consumption was 199.7 MB. Max. memory is 16.0 GB. [2021-03-24 11:03:09,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 406.21 ms. Allocated memory was 255.9 MB in the beginning and 356.5 MB in the end (delta: 100.7 MB). Free memory was 235.1 MB in the beginning and 318.8 MB in the end (delta: -83.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.45 ms. Allocated memory is still 356.5 MB. Free memory was 318.8 MB in the beginning and 316.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.19 ms. Allocated memory is still 356.5 MB. Free memory was 316.8 MB in the beginning and 315.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 361.97 ms. Allocated memory is still 356.5 MB. Free memory was 315.3 MB in the beginning and 331.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3819.22 ms. Allocated memory is still 356.5 MB. Free memory was 330.9 MB in the beginning and 129.7 MB in the end (delta: 201.2 MB). Peak memory consumption was 199.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1746.7ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 680, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3708.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 869.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1823.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 87 SDslu, 124 SDs, 0 SdLazy, 211 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 184.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 263.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=4, InterpolantAutomatonStates: 68, 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: 29.9ms SsaConstructionTime, 202.0ms SatisfiabilityAnalysisTime, 569.1ms InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...