/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:02:38,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:02:38,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:02:38,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:02:38,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:02:38,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:02:38,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:02:38,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:02:38,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:02:38,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:02:38,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:02:38,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:02:38,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:02:38,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:02:38,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:02:38,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:02:38,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:02:38,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:02:38,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:02:38,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:02:38,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:02:38,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:02:38,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:02:38,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:02:38,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:02:38,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:02:38,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:02:38,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:02:38,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:02:38,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:02:38,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:02:38,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:02:38,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:02:38,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:02:38,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:02:38,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:02:38,975 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-RepeatedVariableLbe.epf [2021-03-25 05:02:38,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:02:38,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:02:38,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:02:38,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:02:38,995 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:02:38,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:02:38,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:02:38,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:02:38,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:02:38,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:02:38,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:02:38,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:02:38,999 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:02:38,999 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:02:38,999 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:02:39,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:02:39,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:02:39,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:02:39,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:02:39,335 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:02:39,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-03-25 05:02:39,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3215cc62f/f334d90c63dc401bbf39ff8cab5d0467/FLAGf9e08b19d [2021-03-25 05:02:39,945 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:02:39,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i [2021-03-25 05:02:39,960 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3215cc62f/f334d90c63dc401bbf39ff8cab5d0467/FLAGf9e08b19d [2021-03-25 05:02:40,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3215cc62f/f334d90c63dc401bbf39ff8cab5d0467 [2021-03-25 05:02:40,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:02:40,191 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:02:40,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:40,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:02:40,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:02:40,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c81a1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40, skipping insertion in model container [2021-03-25 05:02:40,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:02:40,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:02:40,351 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-03-25 05:02:40,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:40,545 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:02:40,557 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.opt.i[949,962] [2021-03-25 05:02:40,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:02:40,672 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:02:40,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40 WrapperNode [2021-03-25 05:02:40,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:02:40,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:40,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:02:40,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:02:40,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:02:40,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:02:40,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:02:40,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:02:40,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... [2021-03-25 05:02:40,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:02:40,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:02:40,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:02:40,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:02:40,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:02:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:02:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:02:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:02:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:02:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:02:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:02:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:02:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:02:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:02:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:02:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:02:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:02:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:02:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:02:40,822 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:02:41,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:02:41,195 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:02:41,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:41 BoogieIcfgContainer [2021-03-25 05:02:41,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:02:41,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:02:41,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:02:41,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:02:41,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:02:40" (1/3) ... [2021-03-25 05:02:41,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67815358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:41, skipping insertion in model container [2021-03-25 05:02:41,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:02:40" (2/3) ... [2021-03-25 05:02:41,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67815358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:02:41, skipping insertion in model container [2021-03-25 05:02:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:02:41" (3/3) ... [2021-03-25 05:02:41,203 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.opt.i [2021-03-25 05:02:41,210 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:02:41,214 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:02:41,214 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:02:41,253 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,254 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,256 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,257 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,259 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,259 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,259 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,259 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,260 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,260 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,260 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,263 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,266 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,272 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,272 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,278 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,278 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,278 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,279 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:02:41,281 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:02:41,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:02:41,325 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:02:41,325 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:02:41,325 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:02:41,325 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:02:41,325 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:02:41,326 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:02:41,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:02:41,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:02:41,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:41,392 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:02:41,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:41,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:02:41,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:02:41,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:41,409 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:41,422 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:41,424 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:41,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:02:41,437 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:02:41,437 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:41,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:02:41,440 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:02:43,289 INFO L154 LiptonReduction]: Checked pairs total: 1328 [2021-03-25 05:02:43,290 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:02:43,292 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1884 [2021-03-25 05:02:43,300 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:02:43,300 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:43,300 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:43,301 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:43,301 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:43,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:43,305 INFO L82 PathProgramCache]: Analyzing trace with hash -864788976, now seen corresponding path program 1 times [2021-03-25 05:02:43,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:43,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106819365] [2021-03-25 05:02:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:43,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:43,562 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:43,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:43,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:43,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:43,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106819365] [2021-03-25 05:02:43,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:43,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:43,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777303873] [2021-03-25 05:02:43,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:43,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:43,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:43,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:43,625 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 116 [2021-03-25 05:02:43,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:43,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 116 [2021-03-25 05:02:43,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:43,770 INFO L129 PetriNetUnfolder]: 113/281 cut-off events. [2021-03-25 05:02:43,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:43,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 281 events. 113/281 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1551 event pairs, 33 based on Foata normal form. 25/294 useless extension candidates. Maximal degree in co-relation 488. Up to 103 conditions per place. [2021-03-25 05:02:43,776 INFO L132 encePairwiseOnDemand]: 108/116 looper letters, 9 selfloop transitions, 6 changer transitions 11/38 dead transitions. [2021-03-25 05:02:43,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 137 flow [2021-03-25 05:02:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2021-03-25 05:02:43,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7637931034482759 [2021-03-25 05:02:43,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2021-03-25 05:02:43,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2021-03-25 05:02:43,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:43,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2021-03-25 05:02:43,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:43,817 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 443 transitions. [2021-03-25 05:02:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 137 flow [2021-03-25 05:02:43,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:43,822 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 108 flow [2021-03-25 05:02:43,824 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-03-25 05:02:43,825 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:02:43,825 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:43,825 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-25 05:02:43,825 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 26 transitions, 108 flow [2021-03-25 05:02:43,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 108 flow [2021-03-25 05:02:43,846 INFO L129 PetriNetUnfolder]: 65/168 cut-off events. [2021-03-25 05:02:43,847 INFO L130 PetriNetUnfolder]: For 86/105 co-relation queries the response was YES. [2021-03-25 05:02:43,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 168 events. 65/168 cut-off events. For 86/105 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 772 event pairs, 17 based on Foata normal form. 5/164 useless extension candidates. Maximal degree in co-relation 405. Up to 81 conditions per place. [2021-03-25 05:02:43,851 INFO L142 LiptonReduction]: Number of co-enabled transitions 168 [2021-03-25 05:02:44,245 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:44,454 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:02:44,513 INFO L154 LiptonReduction]: Checked pairs total: 201 [2021-03-25 05:02:44,513 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:02:44,513 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 688 [2021-03-25 05:02:44,514 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 102 flow [2021-03-25 05:02:44,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,514 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:02:44,515 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1038676965, now seen corresponding path program 1 times [2021-03-25 05:02:44,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715391147] [2021-03-25 05:02:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:44,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,596 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:44,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:44,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715391147] [2021-03-25 05:02:44,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:44,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763275757] [2021-03-25 05:02:44,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:44,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:44,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:44,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:44,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:44,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,672 INFO L129 PetriNetUnfolder]: 67/199 cut-off events. [2021-03-25 05:02:44,672 INFO L130 PetriNetUnfolder]: For 181/278 co-relation queries the response was YES. [2021-03-25 05:02:44,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 199 events. 67/199 cut-off events. For 181/278 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1026 event pairs, 6 based on Foata normal form. 23/216 useless extension candidates. Maximal degree in co-relation 604. Up to 90 conditions per place. [2021-03-25 05:02:44,674 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 12 selfloop transitions, 7 changer transitions 15/44 dead transitions. [2021-03-25 05:02:44,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 294 flow [2021-03-25 05:02:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 620 transitions. [2021-03-25 05:02:44,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7442977190876351 [2021-03-25 05:02:44,677 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 620 transitions. [2021-03-25 05:02:44,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 620 transitions. [2021-03-25 05:02:44,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 620 transitions. [2021-03-25 05:02:44,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.57142857142857) internal successors, (620), 7 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,682 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,682 INFO L185 Difference]: Start difference. First operand has 31 places, 23 transitions, 102 flow. Second operand 7 states and 620 transitions. [2021-03-25 05:02:44,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 294 flow [2021-03-25 05:02:44,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 258 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 05:02:44,685 INFO L241 Difference]: Finished difference. Result has 41 places, 26 transitions, 148 flow [2021-03-25 05:02:44,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=148, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2021-03-25 05:02:44,686 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-25 05:02:44,686 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,686 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 26 transitions, 148 flow [2021-03-25 05:02:44,686 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 26 transitions, 148 flow [2021-03-25 05:02:44,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 26 transitions, 148 flow [2021-03-25 05:02:44,697 INFO L129 PetriNetUnfolder]: 45/124 cut-off events. [2021-03-25 05:02:44,697 INFO L130 PetriNetUnfolder]: For 180/223 co-relation queries the response was YES. [2021-03-25 05:02:44,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 124 events. 45/124 cut-off events. For 180/223 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 533 event pairs, 16 based on Foata normal form. 10/126 useless extension candidates. Maximal degree in co-relation 368. Up to 65 conditions per place. [2021-03-25 05:02:44,699 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-25 05:02:44,702 INFO L154 LiptonReduction]: Checked pairs total: 90 [2021-03-25 05:02:44,702 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:44,702 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 05:02:44,703 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 148 flow [2021-03-25 05:02:44,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,703 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,704 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:02:44,704 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash 595450843, now seen corresponding path program 1 times [2021-03-25 05:02:44,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410606354] [2021-03-25 05:02:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,744 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:44,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:44,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410606354] [2021-03-25 05:02:44,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:44,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:44,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263637553] [2021-03-25 05:02:44,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:44,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:44,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:44,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 119 [2021-03-25 05:02:44,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:44,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 119 [2021-03-25 05:02:44,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:44,857 INFO L129 PetriNetUnfolder]: 134/319 cut-off events. [2021-03-25 05:02:44,857 INFO L130 PetriNetUnfolder]: For 1054/1227 co-relation queries the response was YES. [2021-03-25 05:02:44,858 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 319 events. 134/319 cut-off events. For 1054/1227 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1647 event pairs, 6 based on Foata normal form. 24/338 useless extension candidates. Maximal degree in co-relation 1149. Up to 119 conditions per place. [2021-03-25 05:02:44,860 INFO L132 encePairwiseOnDemand]: 110/119 looper letters, 22 selfloop transitions, 18 changer transitions 17/66 dead transitions. [2021-03-25 05:02:44,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 546 flow [2021-03-25 05:02:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 05:02:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 05:02:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 783 transitions. [2021-03-25 05:02:44,863 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7310924369747899 [2021-03-25 05:02:44,863 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 783 transitions. [2021-03-25 05:02:44,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 783 transitions. [2021-03-25 05:02:44,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:44,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 783 transitions. [2021-03-25 05:02:44,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,868 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,868 INFO L185 Difference]: Start difference. First operand has 38 places, 26 transitions, 148 flow. Second operand 9 states and 783 transitions. [2021-03-25 05:02:44,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 546 flow [2021-03-25 05:02:44,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 66 transitions, 507 flow, removed 16 selfloop flow, removed 2 redundant places. [2021-03-25 05:02:44,876 INFO L241 Difference]: Finished difference. Result has 52 places, 39 transitions, 341 flow [2021-03-25 05:02:44,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=341, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2021-03-25 05:02:44,876 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2021-03-25 05:02:44,876 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:44,876 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 39 transitions, 341 flow [2021-03-25 05:02:44,877 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 39 transitions, 341 flow [2021-03-25 05:02:44,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 341 flow [2021-03-25 05:02:44,897 INFO L129 PetriNetUnfolder]: 82/217 cut-off events. [2021-03-25 05:02:44,898 INFO L130 PetriNetUnfolder]: For 719/768 co-relation queries the response was YES. [2021-03-25 05:02:44,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 217 events. 82/217 cut-off events. For 719/768 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1084 event pairs, 12 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 965. Up to 91 conditions per place. [2021-03-25 05:02:44,901 INFO L142 LiptonReduction]: Number of co-enabled transitions 238 [2021-03-25 05:02:44,912 INFO L154 LiptonReduction]: Checked pairs total: 152 [2021-03-25 05:02:44,913 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:44,913 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 37 [2021-03-25 05:02:44,918 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 341 flow [2021-03-25 05:02:44,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:44,918 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:44,918 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:44,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:02:44,918 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1904680456, now seen corresponding path program 1 times [2021-03-25 05:02:44,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:44,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282074200] [2021-03-25 05:02:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:44,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:44,985 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:44,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:44,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:44,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282074200] [2021-03-25 05:02:45,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:45,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585737115] [2021-03-25 05:02:45,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,006 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:45,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:45,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,076 INFO L129 PetriNetUnfolder]: 79/217 cut-off events. [2021-03-25 05:02:45,076 INFO L130 PetriNetUnfolder]: For 1142/1365 co-relation queries the response was YES. [2021-03-25 05:02:45,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 217 events. 79/217 cut-off events. For 1142/1365 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1048 event pairs, 5 based on Foata normal form. 17/230 useless extension candidates. Maximal degree in co-relation 1091. Up to 80 conditions per place. [2021-03-25 05:02:45,079 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 21 selfloop transitions, 18 changer transitions 12/62 dead transitions. [2021-03-25 05:02:45,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 699 flow [2021-03-25 05:02:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2021-03-25 05:02:45,081 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.737094837935174 [2021-03-25 05:02:45,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2021-03-25 05:02:45,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2021-03-25 05:02:45,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2021-03-25 05:02:45,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,088 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 341 flow. Second operand 7 states and 614 transitions. [2021-03-25 05:02:45,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 699 flow [2021-03-25 05:02:45,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 655 flow, removed 22 selfloop flow, removed 6 redundant places. [2021-03-25 05:02:45,095 INFO L241 Difference]: Finished difference. Result has 54 places, 45 transitions, 480 flow [2021-03-25 05:02:45,095 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2021-03-25 05:02:45,095 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 05:02:45,095 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,095 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 45 transitions, 480 flow [2021-03-25 05:02:45,096 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 45 transitions, 480 flow [2021-03-25 05:02:45,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 45 transitions, 480 flow [2021-03-25 05:02:45,111 INFO L129 PetriNetUnfolder]: 64/182 cut-off events. [2021-03-25 05:02:45,112 INFO L130 PetriNetUnfolder]: For 823/886 co-relation queries the response was YES. [2021-03-25 05:02:45,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 182 events. 64/182 cut-off events. For 823/886 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 880 event pairs, 10 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 876. Up to 78 conditions per place. [2021-03-25 05:02:45,114 INFO L142 LiptonReduction]: Number of co-enabled transitions 254 [2021-03-25 05:02:45,124 INFO L154 LiptonReduction]: Checked pairs total: 301 [2021-03-25 05:02:45,124 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:45,124 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 05:02:45,125 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 480 flow [2021-03-25 05:02:45,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,125 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,125 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:02:45,126 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,126 INFO L82 PathProgramCache]: Analyzing trace with hash -726625152, now seen corresponding path program 1 times [2021-03-25 05:02:45,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608623630] [2021-03-25 05:02:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,183 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:45,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:45,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608623630] [2021-03-25 05:02:45,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:45,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146883121] [2021-03-25 05:02:45,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,212 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:45,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:45,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,274 INFO L129 PetriNetUnfolder]: 60/185 cut-off events. [2021-03-25 05:02:45,274 INFO L130 PetriNetUnfolder]: For 1301/1527 co-relation queries the response was YES. [2021-03-25 05:02:45,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 185 events. 60/185 cut-off events. For 1301/1527 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 877 event pairs, 1 based on Foata normal form. 27/211 useless extension candidates. Maximal degree in co-relation 975. Up to 64 conditions per place. [2021-03-25 05:02:45,276 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 20 selfloop transitions, 25 changer transitions 12/68 dead transitions. [2021-03-25 05:02:45,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 893 flow [2021-03-25 05:02:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-25 05:02:45,279 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7358943577430972 [2021-03-25 05:02:45,279 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-25 05:02:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-25 05:02:45,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-25 05:02:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,283 INFO L185 Difference]: Start difference. First operand has 51 places, 45 transitions, 480 flow. Second operand 7 states and 613 transitions. [2021-03-25 05:02:45,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 893 flow [2021-03-25 05:02:45,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 867 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-25 05:02:45,289 INFO L241 Difference]: Finished difference. Result has 60 places, 52 transitions, 693 flow [2021-03-25 05:02:45,290 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=693, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2021-03-25 05:02:45,290 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2021-03-25 05:02:45,290 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,290 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 52 transitions, 693 flow [2021-03-25 05:02:45,290 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 52 transitions, 693 flow [2021-03-25 05:02:45,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 693 flow [2021-03-25 05:02:45,306 INFO L129 PetriNetUnfolder]: 44/145 cut-off events. [2021-03-25 05:02:45,306 INFO L130 PetriNetUnfolder]: For 1237/1311 co-relation queries the response was YES. [2021-03-25 05:02:45,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 145 events. 44/145 cut-off events. For 1237/1311 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 693 event pairs, 1 based on Foata normal form. 8/153 useless extension candidates. Maximal degree in co-relation 745. Up to 50 conditions per place. [2021-03-25 05:02:45,309 INFO L142 LiptonReduction]: Number of co-enabled transitions 276 [2021-03-25 05:02:45,315 INFO L154 LiptonReduction]: Checked pairs total: 282 [2021-03-25 05:02:45,316 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:45,316 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 05:02:45,318 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 693 flow [2021-03-25 05:02:45,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,320 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:02:45,320 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash 649353657, now seen corresponding path program 1 times [2021-03-25 05:02:45,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356915095] [2021-03-25 05:02:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,373 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:45,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356915095] [2021-03-25 05:02:45,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:45,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820233243] [2021-03-25 05:02:45,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-25 05:02:45,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-25 05:02:45,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,444 INFO L129 PetriNetUnfolder]: 45/146 cut-off events. [2021-03-25 05:02:45,444 INFO L130 PetriNetUnfolder]: For 1462/1787 co-relation queries the response was YES. [2021-03-25 05:02:45,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 146 events. 45/146 cut-off events. For 1462/1787 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 0 based on Foata normal form. 29/175 useless extension candidates. Maximal degree in co-relation 865. Up to 47 conditions per place. [2021-03-25 05:02:45,446 INFO L132 encePairwiseOnDemand]: 111/119 looper letters, 20 selfloop transitions, 29 changer transitions 9/69 dead transitions. [2021-03-25 05:02:45,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 1105 flow [2021-03-25 05:02:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:45,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:45,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 610 transitions. [2021-03-25 05:02:45,448 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7322929171668667 [2021-03-25 05:02:45,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 610 transitions. [2021-03-25 05:02:45,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 610 transitions. [2021-03-25 05:02:45,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 610 transitions. [2021-03-25 05:02:45,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.14285714285714) internal successors, (610), 7 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,452 INFO L185 Difference]: Start difference. First operand has 57 places, 52 transitions, 693 flow. Second operand 7 states and 610 transitions. [2021-03-25 05:02:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 1105 flow [2021-03-25 05:02:45,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 1070 flow, removed 13 selfloop flow, removed 5 redundant places. [2021-03-25 05:02:45,461 INFO L241 Difference]: Finished difference. Result has 64 places, 56 transitions, 885 flow [2021-03-25 05:02:45,461 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2021-03-25 05:02:45,461 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2021-03-25 05:02:45,462 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,462 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 56 transitions, 885 flow [2021-03-25 05:02:45,462 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 56 transitions, 885 flow [2021-03-25 05:02:45,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 56 transitions, 885 flow [2021-03-25 05:02:45,475 INFO L129 PetriNetUnfolder]: 36/124 cut-off events. [2021-03-25 05:02:45,475 INFO L130 PetriNetUnfolder]: For 1041/1143 co-relation queries the response was YES. [2021-03-25 05:02:45,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 124 events. 36/124 cut-off events. For 1041/1143 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 576 event pairs, 1 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 749. Up to 45 conditions per place. [2021-03-25 05:02:45,477 INFO L142 LiptonReduction]: Number of co-enabled transitions 286 [2021-03-25 05:02:45,541 INFO L154 LiptonReduction]: Checked pairs total: 733 [2021-03-25 05:02:45,541 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:02:45,541 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 79 [2021-03-25 05:02:45,542 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 883 flow [2021-03-25 05:02:45,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,542 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,542 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:02:45,542 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash 682039165, now seen corresponding path program 1 times [2021-03-25 05:02:45,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686748405] [2021-03-25 05:02:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686748405] [2021-03-25 05:02:45,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:45,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830413467] [2021-03-25 05:02:45,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,583 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-25 05:02:45,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 883 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-25 05:02:45,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,619 INFO L129 PetriNetUnfolder]: 38/127 cut-off events. [2021-03-25 05:02:45,619 INFO L130 PetriNetUnfolder]: For 1623/1791 co-relation queries the response was YES. [2021-03-25 05:02:45,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 127 events. 38/127 cut-off events. For 1623/1791 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 549 event pairs, 0 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 821. Up to 44 conditions per place. [2021-03-25 05:02:45,620 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 1 selfloop transitions, 5 changer transitions 24/55 dead transitions. [2021-03-25 05:02:45,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 903 flow [2021-03-25 05:02:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:02:45,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:02:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2021-03-25 05:02:45,622 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.78125 [2021-03-25 05:02:45,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2021-03-25 05:02:45,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2021-03-25 05:02:45,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2021-03-25 05:02:45,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,625 INFO L185 Difference]: Start difference. First operand has 60 places, 55 transitions, 883 flow. Second operand 4 states and 375 transitions. [2021-03-25 05:02:45,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 903 flow [2021-03-25 05:02:45,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 853 flow, removed 17 selfloop flow, removed 6 redundant places. [2021-03-25 05:02:45,632 INFO L241 Difference]: Finished difference. Result has 59 places, 31 transitions, 404 flow [2021-03-25 05:02:45,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=59, PETRI_TRANSITIONS=31} [2021-03-25 05:02:45,633 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2021-03-25 05:02:45,633 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,633 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 31 transitions, 404 flow [2021-03-25 05:02:45,633 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 31 transitions, 404 flow [2021-03-25 05:02:45,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 59 places, 31 transitions, 404 flow [2021-03-25 05:02:45,640 INFO L129 PetriNetUnfolder]: 9/48 cut-off events. [2021-03-25 05:02:45,641 INFO L130 PetriNetUnfolder]: For 410/413 co-relation queries the response was YES. [2021-03-25 05:02:45,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 48 events. 9/48 cut-off events. For 410/413 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 127 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 272. Up to 17 conditions per place. [2021-03-25 05:02:45,641 INFO L142 LiptonReduction]: Number of co-enabled transitions 108 [2021-03-25 05:02:45,643 INFO L154 LiptonReduction]: Checked pairs total: 87 [2021-03-25 05:02:45,643 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:45,644 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 05:02:45,644 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 31 transitions, 404 flow [2021-03-25 05:02:45,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,644 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,644 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:02:45,645 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash -760861359, now seen corresponding path program 1 times [2021-03-25 05:02:45,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753362266] [2021-03-25 05:02:45,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753362266] [2021-03-25 05:02:45,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:02:45,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742654986] [2021-03-25 05:02:45,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:45,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:45,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:45,683 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-25 05:02:45,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 31 transitions, 404 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-25 05:02:45,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,715 INFO L129 PetriNetUnfolder]: 60/149 cut-off events. [2021-03-25 05:02:45,715 INFO L130 PetriNetUnfolder]: For 1402/1431 co-relation queries the response was YES. [2021-03-25 05:02:45,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 149 events. 60/149 cut-off events. For 1402/1431 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 645 event pairs, 21 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 580. Up to 87 conditions per place. [2021-03-25 05:02:45,717 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 6 changer transitions 5/41 dead transitions. [2021-03-25 05:02:45,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 41 transitions, 456 flow [2021-03-25 05:02:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:02:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:02:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 05:02:45,718 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.755 [2021-03-25 05:02:45,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 05:02:45,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 05:02:45,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 05:02:45,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,722 INFO L185 Difference]: Start difference. First operand has 59 places, 31 transitions, 404 flow. Second operand 5 states and 453 transitions. [2021-03-25 05:02:45,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 41 transitions, 456 flow [2021-03-25 05:02:45,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 357 flow, removed 14 selfloop flow, removed 12 redundant places. [2021-03-25 05:02:45,727 INFO L241 Difference]: Finished difference. Result has 54 places, 36 transitions, 351 flow [2021-03-25 05:02:45,727 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2021-03-25 05:02:45,727 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2021-03-25 05:02:45,727 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,727 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 36 transitions, 351 flow [2021-03-25 05:02:45,727 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 36 transitions, 351 flow [2021-03-25 05:02:45,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 36 transitions, 351 flow [2021-03-25 05:02:45,738 INFO L129 PetriNetUnfolder]: 41/127 cut-off events. [2021-03-25 05:02:45,738 INFO L130 PetriNetUnfolder]: For 486/519 co-relation queries the response was YES. [2021-03-25 05:02:45,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 127 events. 41/127 cut-off events. For 486/519 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 593 event pairs, 22 based on Foata normal form. 2/123 useless extension candidates. Maximal degree in co-relation 493. Up to 75 conditions per place. [2021-03-25 05:02:45,740 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:02:45,742 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:45,742 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:45,743 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-25 05:02:45,743 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 351 flow [2021-03-25 05:02:45,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,743 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,743 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:02:45,744 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2111867564, now seen corresponding path program 1 times [2021-03-25 05:02:45,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276658753] [2021-03-25 05:02:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276658753] [2021-03-25 05:02:45,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:02:45,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451701607] [2021-03-25 05:02:45,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:45,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:45,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:45,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-25 05:02:45,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-25 05:02:45,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,836 INFO L129 PetriNetUnfolder]: 40/122 cut-off events. [2021-03-25 05:02:45,836 INFO L130 PetriNetUnfolder]: For 650/787 co-relation queries the response was YES. [2021-03-25 05:02:45,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 122 events. 40/122 cut-off events. For 650/787 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 528 event pairs, 3 based on Foata normal form. 46/162 useless extension candidates. Maximal degree in co-relation 524. Up to 65 conditions per place. [2021-03-25 05:02:45,837 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 10 changer transitions 6/46 dead transitions. [2021-03-25 05:02:45,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 445 flow [2021-03-25 05:02:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2021-03-25 05:02:45,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2021-03-25 05:02:45,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2021-03-25 05:02:45,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2021-03-25 05:02:45,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2021-03-25 05:02:45,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 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) [2021-03-25 05:02:45,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,843 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,843 INFO L185 Difference]: Start difference. First operand has 54 places, 36 transitions, 351 flow. Second operand 7 states and 632 transitions. [2021-03-25 05:02:45,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 445 flow [2021-03-25 05:02:45,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 445 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 05:02:45,846 INFO L241 Difference]: Finished difference. Result has 63 places, 40 transitions, 418 flow [2021-03-25 05:02:45,846 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2021-03-25 05:02:45,846 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-25 05:02:45,847 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,847 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 40 transitions, 418 flow [2021-03-25 05:02:45,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 40 transitions, 418 flow [2021-03-25 05:02:45,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 40 transitions, 418 flow [2021-03-25 05:02:45,860 INFO L129 PetriNetUnfolder]: 29/99 cut-off events. [2021-03-25 05:02:45,860 INFO L130 PetriNetUnfolder]: For 557/642 co-relation queries the response was YES. [2021-03-25 05:02:45,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 99 events. 29/99 cut-off events. For 557/642 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 381 event pairs, 3 based on Foata normal form. 7/104 useless extension candidates. Maximal degree in co-relation 479. Up to 49 conditions per place. [2021-03-25 05:02:45,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 166 [2021-03-25 05:02:45,866 INFO L154 LiptonReduction]: Checked pairs total: 34 [2021-03-25 05:02:45,866 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:02:45,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 05:02:45,867 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 402 flow [2021-03-25 05:02:45,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,867 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:45,867 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:45,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:02:45,868 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:45,868 INFO L82 PathProgramCache]: Analyzing trace with hash 776399953, now seen corresponding path program 1 times [2021-03-25 05:02:45,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:45,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230906200] [2021-03-25 05:02:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:45,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:45,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:45,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230906200] [2021-03-25 05:02:45,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:45,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:45,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885032115] [2021-03-25 05:02:45,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:02:45,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:45,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:02:45,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:02:45,910 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 120 [2021-03-25 05:02:45,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:45,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 120 [2021-03-25 05:02:45,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:45,953 INFO L129 PetriNetUnfolder]: 23/74 cut-off events. [2021-03-25 05:02:45,953 INFO L130 PetriNetUnfolder]: For 536/583 co-relation queries the response was YES. [2021-03-25 05:02:45,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 74 events. 23/74 cut-off events. For 536/583 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 0 based on Foata normal form. 23/95 useless extension candidates. Maximal degree in co-relation 393. Up to 33 conditions per place. [2021-03-25 05:02:45,954 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 2 selfloop transitions, 10 changer transitions 10/41 dead transitions. [2021-03-25 05:02:45,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 41 transitions, 459 flow [2021-03-25 05:02:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:02:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:02:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2021-03-25 05:02:45,956 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7464285714285714 [2021-03-25 05:02:45,956 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2021-03-25 05:02:45,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2021-03-25 05:02:45,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2021-03-25 05:02:45,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,959 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:45,959 INFO L185 Difference]: Start difference. First operand has 62 places, 38 transitions, 402 flow. Second operand 7 states and 627 transitions. [2021-03-25 05:02:45,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 41 transitions, 459 flow [2021-03-25 05:02:45,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 425 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-25 05:02:45,963 INFO L241 Difference]: Finished difference. Result has 63 places, 31 transitions, 316 flow [2021-03-25 05:02:45,963 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=63, PETRI_TRANSITIONS=31} [2021-03-25 05:02:45,963 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2021-03-25 05:02:45,963 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:45,964 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 31 transitions, 316 flow [2021-03-25 05:02:45,964 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 31 transitions, 316 flow [2021-03-25 05:02:45,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 61 places, 31 transitions, 316 flow [2021-03-25 05:02:45,968 INFO L129 PetriNetUnfolder]: 11/45 cut-off events. [2021-03-25 05:02:45,968 INFO L130 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2021-03-25 05:02:45,969 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 45 events. 11/45 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 210. Up to 15 conditions per place. [2021-03-25 05:02:45,969 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-25 05:02:46,099 INFO L154 LiptonReduction]: Checked pairs total: 12 [2021-03-25 05:02:46,099 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:02:46,099 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 136 [2021-03-25 05:02:46,100 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 29 transitions, 348 flow [2021-03-25 05:02:46,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,100 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:46,100 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:46,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 05:02:46,100 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:46,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:46,101 INFO L82 PathProgramCache]: Analyzing trace with hash -951958936, now seen corresponding path program 1 times [2021-03-25 05:02:46,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:46,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642137616] [2021-03-25 05:02:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:46,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:46,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:46,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:46,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:46,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:46,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642137616] [2021-03-25 05:02:46,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:46,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:02:46,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180569861] [2021-03-25 05:02:46,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:02:46,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:02:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:02:46,127 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 124 [2021-03-25 05:02:46,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 29 transitions, 348 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:46,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 124 [2021-03-25 05:02:46,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:46,150 INFO L129 PetriNetUnfolder]: 14/52 cut-off events. [2021-03-25 05:02:46,151 INFO L130 PetriNetUnfolder]: For 639/643 co-relation queries the response was YES. [2021-03-25 05:02:46,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 52 events. 14/52 cut-off events. For 639/643 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 130 event pairs, 0 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 355. Up to 22 conditions per place. [2021-03-25 05:02:46,151 INFO L132 encePairwiseOnDemand]: 120/124 looper letters, 5 selfloop transitions, 3 changer transitions 12/33 dead transitions. [2021-03-25 05:02:46,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 33 transitions, 484 flow [2021-03-25 05:02:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:02:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:02:46,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2021-03-25 05:02:46,153 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.780241935483871 [2021-03-25 05:02:46,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2021-03-25 05:02:46,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2021-03-25 05:02:46,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:46,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2021-03-25 05:02:46,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,155 INFO L185 Difference]: Start difference. First operand has 59 places, 29 transitions, 348 flow. Second operand 4 states and 387 transitions. [2021-03-25 05:02:46,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 33 transitions, 484 flow [2021-03-25 05:02:46,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 33 transitions, 353 flow, removed 16 selfloop flow, removed 14 redundant places. [2021-03-25 05:02:46,158 INFO L241 Difference]: Finished difference. Result has 49 places, 21 transitions, 182 flow [2021-03-25 05:02:46,158 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=21} [2021-03-25 05:02:46,159 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2021-03-25 05:02:46,159 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:46,159 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 21 transitions, 182 flow [2021-03-25 05:02:46,159 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 21 transitions, 182 flow [2021-03-25 05:02:46,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 21 transitions, 182 flow [2021-03-25 05:02:46,164 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:02:46,164 INFO L130 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2021-03-25 05:02:46,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 24 events. 5/24 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2021-03-25 05:02:46,164 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 05:02:46,330 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-25 05:02:46,330 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 05:02:46,330 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 171 [2021-03-25 05:02:46,330 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 19 transitions, 196 flow [2021-03-25 05:02:46,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,331 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:02:46,331 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:02:46,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 05:02:46,332 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:02:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:02:46,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1752321277, now seen corresponding path program 1 times [2021-03-25 05:02:46,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:02:46,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778377791] [2021-03-25 05:02:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:02:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:02:46,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:46,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:02:46,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:46,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:46,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:02:46,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:02:46,385 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-25 05:02:46,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 05:02:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:02:46,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778377791] [2021-03-25 05:02:46,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:02:46,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:02:46,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147944696] [2021-03-25 05:02:46,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:02:46,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:02:46,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:02:46,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:02:46,396 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 129 [2021-03-25 05:02:46,397 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 19 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,397 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:02:46,397 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 129 [2021-03-25 05:02:46,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:02:46,413 INFO L129 PetriNetUnfolder]: 5/22 cut-off events. [2021-03-25 05:02:46,414 INFO L130 PetriNetUnfolder]: For 126/128 co-relation queries the response was YES. [2021-03-25 05:02:46,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 22 events. 5/22 cut-off events. For 126/128 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 117. Up to 7 conditions per place. [2021-03-25 05:02:46,414 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 05:02:46,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 18 transitions, 196 flow [2021-03-25 05:02:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:02:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:02:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2021-03-25 05:02:46,416 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7028423772609819 [2021-03-25 05:02:46,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2021-03-25 05:02:46,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2021-03-25 05:02:46,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:02:46,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2021-03-25 05:02:46,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,420 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,420 INFO L185 Difference]: Start difference. First operand has 46 places, 19 transitions, 196 flow. Second operand 6 states and 544 transitions. [2021-03-25 05:02:46,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 18 transitions, 196 flow [2021-03-25 05:02:46,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 4 selfloop flow, removed 22 redundant places. [2021-03-25 05:02:46,421 INFO L241 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:46,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-03-25 05:02:46,421 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2021-03-25 05:02:46,421 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:02:46,421 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:46,421 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 0 transitions, 0 flow [2021-03-25 05:02:46,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:46,422 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:02:46,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:02:46,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:02:46,422 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:02:46,422 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:02:46,422 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:02:46,422 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:02:46,424 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:02:46,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:02:46,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 05:02:46,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:02:46 BasicIcfg [2021-03-25 05:02:46,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:02:46,428 INFO L168 Benchmark]: Toolchain (without parser) took 6237.39 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 233.4 MB in the beginning and 368.4 MB in the end (delta: -135.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:46,428 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:46,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 480.72 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.4 MB in the beginning and 316.2 MB in the end (delta: -82.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:46,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 352.3 MB. Free memory was 316.2 MB in the beginning and 314.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:46,429 INFO L168 Benchmark]: Boogie Preprocessor took 31.05 ms. Allocated memory is still 352.3 MB. Free memory was 314.1 MB in the beginning and 313.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:02:46,430 INFO L168 Benchmark]: RCFGBuilder took 433.95 ms. Allocated memory is still 352.3 MB. Free memory was 313.0 MB in the beginning and 330.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:46,431 INFO L168 Benchmark]: TraceAbstraction took 5229.51 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 330.7 MB in the beginning and 368.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:02:46,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 480.72 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 233.4 MB in the beginning and 316.2 MB in the end (delta: -82.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.13 ms. Allocated memory is still 352.3 MB. Free memory was 316.2 MB in the beginning and 314.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.05 ms. Allocated memory is still 352.3 MB. Free memory was 314.1 MB in the beginning and 313.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 433.95 ms. Allocated memory is still 352.3 MB. Free memory was 313.0 MB in the beginning and 330.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5229.51 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 330.7 MB in the beginning and 368.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1865.5ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 680, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 439, positive: 424, positive conditional: 0, positive unconditional: 424, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 680, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 687.5ms, 36 PlacesBefore, 31 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 168 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 201 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 30, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 30, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.7ms, 41 PlacesBefore, 38 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.8ms, 52 PlacesBefore, 48 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 238 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.5ms, 54 PlacesBefore, 51 PlacesAfterwards, 45 TransitionsBefore, 45 TransitionsAfterwards, 254 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 301 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.3ms, 60 PlacesBefore, 57 PlacesAfterwards, 52 TransitionsBefore, 52 TransitionsAfterwards, 276 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 282 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.3ms, 64 PlacesBefore, 60 PlacesAfterwards, 56 TransitionsBefore, 55 TransitionsAfterwards, 286 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 733 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 113, positive: 78, positive conditional: 0, positive unconditional: 78, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 113, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.5ms, 59 PlacesBefore, 59 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 108 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 87 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.1ms, 54 PlacesBefore, 54 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.6ms, 63 PlacesBefore, 62 PlacesAfterwards, 40 TransitionsBefore, 38 TransitionsAfterwards, 166 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 34 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 135.5ms, 63 PlacesBefore, 59 PlacesAfterwards, 31 TransitionsBefore, 29 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 12 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 170.8ms, 49 PlacesBefore, 46 PlacesAfterwards, 21 TransitionsBefore, 19 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 28 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5104.2ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 906.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1969.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 96 SDslu, 99 SDs, 0 SdLazy, 238 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 177.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 279.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=885occurred in iteration=6, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.1ms SsaConstructionTime, 216.2ms SatisfiabilityAnalysisTime, 553.6ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...