/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:25:45,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:25:45,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:25:45,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:25:45,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:25:45,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:25:45,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:25:45,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:25:45,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:25:45,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:25:45,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:25:45,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:25:45,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:25:45,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:25:45,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:25:45,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:25:45,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:25:45,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:25:45,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:25:45,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:25:45,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:25:45,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:25:45,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:25:45,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:25:45,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:25:45,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:25:45,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:25:45,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:25:45,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:25:45,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:25:45,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:25:45,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:25:45,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:25:45,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:25:45,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:25:45,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:25:45,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:25:45,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:25:45,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:25:45,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:25:45,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:25:45,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:25:45,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:25:45,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:25:45,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:25:45,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:25:45,160 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:25:45,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:25:45,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:25:45,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:25:45,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:25:45,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:25:45,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:25:45,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:25:45,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:25:45,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:25:45,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:25:45,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:25:45,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:25:45,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:25:45,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:25:45,404 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:25:45,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-06-10 12:25:45,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7c36185/ae2f6f56ecc74d838c01e24ccff6cf69/FLAGa6dbd20f0 [2021-06-10 12:25:45,896 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:25:45,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-06-10 12:25:45,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7c36185/ae2f6f56ecc74d838c01e24ccff6cf69/FLAGa6dbd20f0 [2021-06-10 12:25:46,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7c36185/ae2f6f56ecc74d838c01e24ccff6cf69 [2021-06-10 12:25:46,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:25:46,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:25:46,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:46,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:25:46,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:25:46,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bd6ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46, skipping insertion in model container [2021-06-10 12:25:46,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:25:46,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:25:46,416 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/safe012_tso.opt.i[949,962] [2021-06-10 12:25:46,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:46,538 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:25:46,548 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/safe012_tso.opt.i[949,962] [2021-06-10 12:25:46,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:46,647 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:25:46,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46 WrapperNode [2021-06-10 12:25:46,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:46,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:46,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:25:46,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:25:46,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:46,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:25:46,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:25:46,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:25:46,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... [2021-06-10 12:25:46,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:25:46,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:25:46,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:25:46,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:25:46,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:25:46,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:25:46,773 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:25:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:25:46,774 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:25:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:25:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:25:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:25:46,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:25:46,775 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:25:47,050 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:25:47,050 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:25:47,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:47 BoogieIcfgContainer [2021-06-10 12:25:47,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:25:47,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:25:47,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:25:47,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:25:47,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:25:46" (1/3) ... [2021-06-10 12:25:47,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f4cad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:47, skipping insertion in model container [2021-06-10 12:25:47,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:46" (2/3) ... [2021-06-10 12:25:47,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f4cad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:47, skipping insertion in model container [2021-06-10 12:25:47,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:47" (3/3) ... [2021-06-10 12:25:47,056 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-06-10 12:25:47,060 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:25:47,063 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:25:47,063 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,093 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,102 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,102 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,103 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:47,106 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:25:47,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:25:47,145 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:25:47,145 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:25:47,145 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:25:47,146 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:25:47,146 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:25:47,146 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:25:47,146 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:25:47,146 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:25:47,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-06-10 12:25:47,204 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-06-10 12:25:47,205 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:47,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-06-10 12:25:47,209 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-06-10 12:25:47,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-06-10 12:25:47,237 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-06-10 12:25:47,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:47,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:47,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:47,238 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:47,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1296421566, now seen corresponding path program 1 times [2021-06-10 12:25:47,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:47,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332110641] [2021-06-10 12:25:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:47,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:47,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:47,526 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:47,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:47,543 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:47,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:47,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:47,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:47,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:47,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:47,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332110641] [2021-06-10 12:25:47,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:47,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:47,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805054002] [2021-06-10 12:25:47,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:47,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:47,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:47,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:47,603 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-06-10 12:25:47,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:47,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-06-10 12:25:47,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:47,759 INFO L129 PetriNetUnfolder]: 46/174 cut-off events. [2021-06-10 12:25:47,762 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:47,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 174 events. 46/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 619 event pairs, 21 based on Foata normal form. 8/176 useless extension candidates. Maximal degree in co-relation 252. Up to 47 conditions per place. [2021-06-10 12:25:47,765 INFO L132 encePairwiseOnDemand]: 69/76 looper letters, 11 selfloop transitions, 2 changer transitions 19/80 dead transitions. [2021-06-10 12:25:47,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 233 flow [2021-06-10 12:25:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:25:47,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:25:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 576 transitions. [2021-06-10 12:25:47,782 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8421052631578947 [2021-06-10 12:25:47,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 576 transitions. [2021-06-10 12:25:47,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 576 transitions. [2021-06-10 12:25:47,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:47,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 576 transitions. [2021-06-10 12:25:47,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.0) internal successors, (576), 9 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,801 INFO L185 Difference]: Start difference. First operand has 70 places, 61 transitions, 131 flow. Second operand 9 states and 576 transitions. [2021-06-10 12:25:47,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 233 flow [2021-06-10 12:25:47,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:25:47,807 INFO L241 Difference]: Finished difference. Result has 82 places, 60 transitions, 146 flow [2021-06-10 12:25:47,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=146, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2021-06-10 12:25:47,809 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 12 predicate places. [2021-06-10 12:25:47,809 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 146 flow [2021-06-10 12:25:47,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,810 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:47,810 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:47,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:25:47,810 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash 417553791, now seen corresponding path program 1 times [2021-06-10 12:25:47,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:47,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927779248] [2021-06-10 12:25:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:47,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:47,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:47,867 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:47,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:47,874 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:47,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:47,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:47,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:47,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:47,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:47,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927779248] [2021-06-10 12:25:47,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:47,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:47,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002151775] [2021-06-10 12:25:47,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:47,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:47,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:47,911 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2021-06-10 12:25:47,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:47,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:47,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2021-06-10 12:25:47,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:48,042 INFO L129 PetriNetUnfolder]: 21/137 cut-off events. [2021-06-10 12:25:48,042 INFO L130 PetriNetUnfolder]: For 35/37 co-relation queries the response was YES. [2021-06-10 12:25:48,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 137 events. 21/137 cut-off events. For 35/37 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 0 based on Foata normal form. 4/136 useless extension candidates. Maximal degree in co-relation 224. Up to 22 conditions per place. [2021-06-10 12:25:48,046 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 10 selfloop transitions, 4 changer transitions 16/78 dead transitions. [2021-06-10 12:25:48,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 263 flow [2021-06-10 12:25:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:25:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:25:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 632 transitions. [2021-06-10 12:25:48,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-10 12:25:48,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 632 transitions. [2021-06-10 12:25:48,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 632 transitions. [2021-06-10 12:25:48,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:48,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 632 transitions. [2021-06-10 12:25:48,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.2) internal successors, (632), 10 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,052 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,052 INFO L185 Difference]: Start difference. First operand has 82 places, 60 transitions, 146 flow. Second operand 10 states and 632 transitions. [2021-06-10 12:25:48,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 263 flow [2021-06-10 12:25:48,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 229 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-10 12:25:48,058 INFO L241 Difference]: Finished difference. Result has 84 places, 60 transitions, 154 flow [2021-06-10 12:25:48,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=154, PETRI_PLACES=84, PETRI_TRANSITIONS=60} [2021-06-10 12:25:48,059 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2021-06-10 12:25:48,059 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 60 transitions, 154 flow [2021-06-10 12:25:48,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,059 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:48,059 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:48,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:25:48,060 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash -929171362, now seen corresponding path program 1 times [2021-06-10 12:25:48,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:48,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129081983] [2021-06-10 12:25:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:48,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,154 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:48,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:48,164 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:48,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:48,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:48,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129081983] [2021-06-10 12:25:48,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:48,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:48,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336881375] [2021-06-10 12:25:48,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:48,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:48,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:48,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:48,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:25:48,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 60 transitions, 154 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:48,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:25:48,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:48,355 INFO L129 PetriNetUnfolder]: 24/127 cut-off events. [2021-06-10 12:25:48,356 INFO L130 PetriNetUnfolder]: For 46/73 co-relation queries the response was YES. [2021-06-10 12:25:48,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 127 events. 24/127 cut-off events. For 46/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 311 event pairs, 7 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 238. Up to 18 conditions per place. [2021-06-10 12:25:48,356 INFO L132 encePairwiseOnDemand]: 68/76 looper letters, 10 selfloop transitions, 4 changer transitions 21/80 dead transitions. [2021-06-10 12:25:48,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 287 flow [2021-06-10 12:25:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:25:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:25:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 616 transitions. [2021-06-10 12:25:48,358 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-06-10 12:25:48,358 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 616 transitions. [2021-06-10 12:25:48,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 616 transitions. [2021-06-10 12:25:48,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:48,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 616 transitions. [2021-06-10 12:25:48,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.6) internal successors, (616), 10 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,361 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,361 INFO L185 Difference]: Start difference. First operand has 84 places, 60 transitions, 154 flow. Second operand 10 states and 616 transitions. [2021-06-10 12:25:48,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 287 flow [2021-06-10 12:25:48,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 251 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-06-10 12:25:48,363 INFO L241 Difference]: Finished difference. Result has 86 places, 59 transitions, 162 flow [2021-06-10 12:25:48,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2021-06-10 12:25:48,364 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-06-10 12:25:48,364 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 162 flow [2021-06-10 12:25:48,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:48,364 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:48,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:25:48,364 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -935715024, now seen corresponding path program 1 times [2021-06-10 12:25:48,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:48,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887621495] [2021-06-10 12:25:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:48,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,411 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:48,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:48,418 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:48,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:48,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:48,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887621495] [2021-06-10 12:25:48,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:48,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:48,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297743616] [2021-06-10 12:25:48,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:48,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:48,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:48,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:48,452 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:25:48,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:48,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:25:48,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:48,572 INFO L129 PetriNetUnfolder]: 23/129 cut-off events. [2021-06-10 12:25:48,572 INFO L130 PetriNetUnfolder]: For 85/96 co-relation queries the response was YES. [2021-06-10 12:25:48,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 129 events. 23/129 cut-off events. For 85/96 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 372 event pairs, 5 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 257. Up to 20 conditions per place. [2021-06-10 12:25:48,576 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 8 selfloop transitions, 6 changer transitions 22/81 dead transitions. [2021-06-10 12:25:48,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 81 transitions, 319 flow [2021-06-10 12:25:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:25:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:25:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 676 transitions. [2021-06-10 12:25:48,578 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8086124401913876 [2021-06-10 12:25:48,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 676 transitions. [2021-06-10 12:25:48,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 676 transitions. [2021-06-10 12:25:48,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:48,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 676 transitions. [2021-06-10 12:25:48,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.45454545454545) internal successors, (676), 11 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,581 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,581 INFO L185 Difference]: Start difference. First operand has 86 places, 59 transitions, 162 flow. Second operand 11 states and 676 transitions. [2021-06-10 12:25:48,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 81 transitions, 319 flow [2021-06-10 12:25:48,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 256 flow, removed 23 selfloop flow, removed 11 redundant places. [2021-06-10 12:25:48,584 INFO L241 Difference]: Finished difference. Result has 86 places, 59 transitions, 166 flow [2021-06-10 12:25:48,585 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=166, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2021-06-10 12:25:48,585 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 16 predicate places. [2021-06-10 12:25:48,585 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 166 flow [2021-06-10 12:25:48,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 59.5) internal successors, (476), 8 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:48,585 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:48,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:25:48,585 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:48,586 INFO L82 PathProgramCache]: Analyzing trace with hash 374825275, now seen corresponding path program 1 times [2021-06-10 12:25:48,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:48,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155869022] [2021-06-10 12:25:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:48,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,641 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:48,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:48,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:48,658 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:48,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:48,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155869022] [2021-06-10 12:25:48,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:48,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:25:48,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428885266] [2021-06-10 12:25:48,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:25:48,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:48,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:25:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:25:48,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:25:48,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:48,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:25:48,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:48,750 INFO L129 PetriNetUnfolder]: 91/310 cut-off events. [2021-06-10 12:25:48,750 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2021-06-10 12:25:48,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 310 events. 91/310 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1583 event pairs, 25 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 530. Up to 81 conditions per place. [2021-06-10 12:25:48,751 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 10 selfloop transitions, 6 changer transitions 19/84 dead transitions. [2021-06-10 12:25:48,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 286 flow [2021-06-10 12:25:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:25:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:25:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 595 transitions. [2021-06-10 12:25:48,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8698830409356725 [2021-06-10 12:25:48,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 595 transitions. [2021-06-10 12:25:48,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 595 transitions. [2021-06-10 12:25:48,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:48,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 595 transitions. [2021-06-10 12:25:48,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 66.11111111111111) internal successors, (595), 9 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) [2021-06-10 12:25:48,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,757 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 76.0) internal successors, (760), 10 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,757 INFO L185 Difference]: Start difference. First operand has 86 places, 59 transitions, 166 flow. Second operand 9 states and 595 transitions. [2021-06-10 12:25:48,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 286 flow [2021-06-10 12:25:48,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 256 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-06-10 12:25:48,759 INFO L241 Difference]: Finished difference. Result has 83 places, 62 transitions, 192 flow [2021-06-10 12:25:48,760 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2021-06-10 12:25:48,760 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2021-06-10 12:25:48,760 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 192 flow [2021-06-10 12:25:48,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:48,760 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:48,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:25:48,761 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1883129236, now seen corresponding path program 1 times [2021-06-10 12:25:48,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:48,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844388577] [2021-06-10 12:25:48,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:48,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,790 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:48,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:48,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:48,813 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:48,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:48,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:48,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844388577] [2021-06-10 12:25:48,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:48,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:48,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841077207] [2021-06-10 12:25:48,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:48,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:48,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:48,822 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:25:48,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:48,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:25:48,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:48,936 INFO L129 PetriNetUnfolder]: 52/212 cut-off events. [2021-06-10 12:25:48,936 INFO L130 PetriNetUnfolder]: For 254/301 co-relation queries the response was YES. [2021-06-10 12:25:48,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 212 events. 52/212 cut-off events. For 254/301 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 857 event pairs, 0 based on Foata normal form. 14/222 useless extension candidates. Maximal degree in co-relation 561. Up to 75 conditions per place. [2021-06-10 12:25:48,937 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 10 selfloop transitions, 9 changer transitions 19/87 dead transitions. [2021-06-10 12:25:48,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 445 flow [2021-06-10 12:25:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:25:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:25:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 660 transitions. [2021-06-10 12:25:48,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2021-06-10 12:25:48,939 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 660 transitions. [2021-06-10 12:25:48,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 660 transitions. [2021-06-10 12:25:48,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:48,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 660 transitions. [2021-06-10 12:25:48,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,942 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,942 INFO L185 Difference]: Start difference. First operand has 83 places, 62 transitions, 192 flow. Second operand 10 states and 660 transitions. [2021-06-10 12:25:48,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 445 flow [2021-06-10 12:25:48,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 421 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 12:25:48,944 INFO L241 Difference]: Finished difference. Result has 89 places, 65 transitions, 260 flow [2021-06-10 12:25:48,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2021-06-10 12:25:48,944 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2021-06-10 12:25:48,945 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 260 flow [2021-06-10 12:25:48,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:48,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:48,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:48,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:25:48,945 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash -333882655, now seen corresponding path program 1 times [2021-06-10 12:25:48,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:48,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989444629] [2021-06-10 12:25:48,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:48,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:48,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:48,980 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:48,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:48,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:48,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:48,997 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:49,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:49,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989444629] [2021-06-10 12:25:49,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:49,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:49,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830796356] [2021-06-10 12:25:49,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:49,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:49,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 76 [2021-06-10 12:25:49,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:49,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 76 [2021-06-10 12:25:49,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:49,130 INFO L129 PetriNetUnfolder]: 16/105 cut-off events. [2021-06-10 12:25:49,130 INFO L130 PetriNetUnfolder]: For 390/437 co-relation queries the response was YES. [2021-06-10 12:25:49,131 INFO L84 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 105 events. 16/105 cut-off events. For 390/437 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 220 event pairs, 0 based on Foata normal form. 14/118 useless extension candidates. Maximal degree in co-relation 324. Up to 30 conditions per place. [2021-06-10 12:25:49,131 INFO L132 encePairwiseOnDemand]: 67/76 looper letters, 4 selfloop transitions, 12 changer transitions 13/78 dead transitions. [2021-06-10 12:25:49,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 78 transitions, 444 flow [2021-06-10 12:25:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:25:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:25:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 713 transitions. [2021-06-10 12:25:49,133 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8528708133971292 [2021-06-10 12:25:49,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 713 transitions. [2021-06-10 12:25:49,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 713 transitions. [2021-06-10 12:25:49,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:49,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 713 transitions. [2021-06-10 12:25:49,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.81818181818181) internal successors, (713), 11 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,136 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,136 INFO L185 Difference]: Start difference. First operand has 89 places, 65 transitions, 260 flow. Second operand 11 states and 713 transitions. [2021-06-10 12:25:49,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 78 transitions, 444 flow [2021-06-10 12:25:49,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 78 transitions, 345 flow, removed 39 selfloop flow, removed 10 redundant places. [2021-06-10 12:25:49,138 INFO L241 Difference]: Finished difference. Result has 91 places, 65 transitions, 246 flow [2021-06-10 12:25:49,138 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=246, PETRI_PLACES=91, PETRI_TRANSITIONS=65} [2021-06-10 12:25:49,138 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 21 predicate places. [2021-06-10 12:25:49,138 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 65 transitions, 246 flow [2021-06-10 12:25:49,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,139 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:49,139 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:49,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:25:49,139 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:49,140 INFO L82 PathProgramCache]: Analyzing trace with hash 104630178, now seen corresponding path program 1 times [2021-06-10 12:25:49,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:49,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475917217] [2021-06-10 12:25:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:49,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:49,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:49,184 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:49,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:49,191 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:49,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:49,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:49,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:49,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:49,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:49,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:49,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475917217] [2021-06-10 12:25:49,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:49,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:49,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404156024] [2021-06-10 12:25:49,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:49,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:49,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:49,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:49,220 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 76 [2021-06-10 12:25:49,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 65 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-06-10 12:25:49,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:49,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 76 [2021-06-10 12:25:49,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:49,286 INFO L129 PetriNetUnfolder]: 5/74 cut-off events. [2021-06-10 12:25:49,286 INFO L130 PetriNetUnfolder]: For 72/78 co-relation queries the response was YES. [2021-06-10 12:25:49,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 74 events. 5/74 cut-off events. For 72/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 145. Up to 11 conditions per place. [2021-06-10 12:25:49,287 INFO L132 encePairwiseOnDemand]: 66/76 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2021-06-10 12:25:49,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 63 transitions, 268 flow [2021-06-10 12:25:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:25:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:25:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-06-10 12:25:49,288 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7861842105263158 [2021-06-10 12:25:49,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-06-10 12:25:49,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-06-10 12:25:49,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:49,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-06-10 12:25:49,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:49,290 INFO L185 Difference]: Start difference. First operand has 91 places, 65 transitions, 246 flow. Second operand 8 states and 478 transitions. [2021-06-10 12:25:49,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 63 transitions, 268 flow [2021-06-10 12:25:49,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 63 transitions, 186 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-10 12:25:49,292 INFO L241 Difference]: Finished difference. Result has 77 places, 0 transitions, 0 flow [2021-06-10 12:25:49,292 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=77, PETRI_TRANSITIONS=0} [2021-06-10 12:25:49,292 INFO L343 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2021-06-10 12:25:49,292 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 0 transitions, 0 flow [2021-06-10 12:25:49,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.0) internal successors, (420), 7 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) [2021-06-10 12:25:49,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:25:49,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:25:49 BasicIcfg [2021-06-10 12:25:49,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:25:49,297 INFO L168 Benchmark]: Toolchain (without parser) took 3039.82 ms. Allocated memory was 375.4 MB in the beginning and 455.1 MB in the end (delta: 79.7 MB). Free memory was 337.4 MB in the beginning and 403.7 MB in the end (delta: -66.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:49,297 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 375.4 MB. Free memory is still 355.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:25:49,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.49 ms. Allocated memory is still 375.4 MB. Free memory was 337.2 MB in the beginning and 337.2 MB in the end (delta: -52.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:49,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 375.4 MB. Free memory was 337.2 MB in the beginning and 335.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:25:49,298 INFO L168 Benchmark]: Boogie Preprocessor took 25.66 ms. Allocated memory is still 375.4 MB. Free memory was 335.1 MB in the beginning and 333.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:49,298 INFO L168 Benchmark]: RCFGBuilder took 335.73 ms. Allocated memory is still 375.4 MB. Free memory was 333.0 MB in the beginning and 308.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 12:25:49,298 INFO L168 Benchmark]: TraceAbstraction took 2243.52 ms. Allocated memory was 375.4 MB in the beginning and 455.1 MB in the end (delta: 79.7 MB). Free memory was 308.9 MB in the beginning and 403.7 MB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:25:49,300 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 375.4 MB. Free memory is still 355.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 391.49 ms. Allocated memory is still 375.4 MB. Free memory was 337.2 MB in the beginning and 337.2 MB in the end (delta: -52.4 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 375.4 MB. Free memory was 337.2 MB in the beginning and 335.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.66 ms. Allocated memory is still 375.4 MB. Free memory was 335.1 MB in the beginning and 333.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 335.73 ms. Allocated memory is still 375.4 MB. Free memory was 333.0 MB in the beginning and 308.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2243.52 ms. Allocated memory was 375.4 MB in the beginning and 455.1 MB in the end (delta: 79.7 MB). Free memory was 308.9 MB in the beginning and 403.7 MB in the end (delta: -94.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2152.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1073.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 72.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 91 SDtfs, 199 SDslu, 304 SDs, 0 SdLazy, 324 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 192.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 728.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=6, InterpolantAutomatonStates: 78, 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: 20.2ms SsaConstructionTime, 138.8ms SatisfiabilityAnalysisTime, 679.2ms InterpolantComputationTime, 378 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 1522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...