/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:25:54,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:25:54,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:25:54,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:25:54,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:25:54,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:25:54,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:25:54,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:25:54,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:25:54,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:25:54,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:25:54,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:25:54,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:25:54,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:25:54,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:25:54,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:25:54,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:25:54,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:25:54,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:25:54,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:25:54,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:25:54,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:25:54,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:25:54,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:25:54,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:25:54,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:25:54,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:25:54,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:25:54,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:25:54,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:25:54,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:25:54,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:25:54,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:25:54,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:25:54,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:25:54,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:25:54,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:25:54,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:25:54,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:25:54,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:25:54,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:25:54,905 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 12:25:54,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:25:54,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:25:54,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:25:54,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:25:54,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:25:54,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:25:54,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:25:54,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:25:54,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:25:54,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:25:54,928 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:25:54,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:25:54,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:25:55,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:25:55,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:25:55,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:25:55,230 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:25:55,230 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:25:55,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-06-10 12:25:55,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08e7d056/1c24b92acbe147bca9970a8f77a932e6/FLAG673a6ad1f [2021-06-10 12:25:55,826 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:25:55,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.opt.i [2021-06-10 12:25:55,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08e7d056/1c24b92acbe147bca9970a8f77a932e6/FLAG673a6ad1f [2021-06-10 12:25:56,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08e7d056/1c24b92acbe147bca9970a8f77a932e6 [2021-06-10 12:25:56,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:25:56,289 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:25:56,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:56,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:25:56,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:25:56,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41385188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56, skipping insertion in model container [2021-06-10 12:25:56,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:25:56,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:25:56,480 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/safe013_tso.opt.i[949,962] [2021-06-10 12:25:56,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:56,687 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:25:56,698 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/safe013_tso.opt.i[949,962] [2021-06-10 12:25:56,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:25:56,783 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:25:56,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56 WrapperNode [2021-06-10 12:25:56,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:25:56,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:56,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:25:56,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:25:56,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:25:56,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:25:56,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:25:56,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:25:56,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... [2021-06-10 12:25:56,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:25:56,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:25:56,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:25:56,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:25:56,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:25:56,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:25:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:25:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:25:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:25:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:25:56,925 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:25:56,925 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:25:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:25:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:25:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:25:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:25:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:25:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:25:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:25:56,928 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:25:57,167 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:25:57,168 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:25:57,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:57 BoogieIcfgContainer [2021-06-10 12:25:57,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:25:57,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:25:57,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:25:57,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:25:57,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:25:56" (1/3) ... [2021-06-10 12:25:57,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3091b55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:57, skipping insertion in model container [2021-06-10 12:25:57,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:25:56" (2/3) ... [2021-06-10 12:25:57,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3091b55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:25:57, skipping insertion in model container [2021-06-10 12:25:57,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:25:57" (3/3) ... [2021-06-10 12:25:57,176 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2021-06-10 12:25:57,181 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:25:57,190 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:25:57,191 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:25:57,233 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,235 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,237 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,238 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,239 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,239 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,240 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,240 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,243 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,243 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,249 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,250 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,250 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:25:57,251 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:25:57,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:25:57,300 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:25:57,301 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:25:57,301 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:25:57,301 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:25:57,301 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:25:57,301 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:25:57,301 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:25:57,302 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:25:57,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:25:57,346 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-06-10 12:25:57,346 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:57,354 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 54 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. [2021-06-10 12:25:57,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-06-10 12:25:57,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-06-10 12:25:57,395 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 12:25:57,396 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:57,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:57,396 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:57,397 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1193660471, now seen corresponding path program 1 times [2021-06-10 12:25:57,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:57,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842980995] [2021-06-10 12:25:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:57,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:57,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:57,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:57,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:57,790 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:57,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:57,811 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:57,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:57,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:57,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:57,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:57,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:57,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:57,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:57,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842980995] [2021-06-10 12:25:57,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:57,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:57,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349839084] [2021-06-10 12:25:57,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:57,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:57,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:57,890 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2021-06-10 12:25:57,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 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) [2021-06-10 12:25:57,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:57,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2021-06-10 12:25:57,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:58,238 INFO L129 PetriNetUnfolder]: 87/295 cut-off events. [2021-06-10 12:25:58,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:25:58,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 295 events. 87/295 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1361 event pairs, 10 based on Foata normal form. 14/298 useless extension candidates. Maximal degree in co-relation 460. Up to 60 conditions per place. [2021-06-10 12:25:58,250 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 5 changer transitions 35/102 dead transitions. [2021-06-10 12:25:58,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 102 transitions, 325 flow [2021-06-10 12:25:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:25:58,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:25:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 816 transitions. [2021-06-10 12:25:58,267 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8369230769230769 [2021-06-10 12:25:58,268 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 816 transitions. [2021-06-10 12:25:58,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 816 transitions. [2021-06-10 12:25:58,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:58,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 816 transitions. [2021-06-10 12:25:58,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.76923076923077) internal successors, (816), 13 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,287 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,288 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 816 transitions. [2021-06-10 12:25:58,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 102 transitions, 325 flow [2021-06-10 12:25:58,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:25:58,299 INFO L241 Difference]: Finished difference. Result has 89 places, 61 transitions, 181 flow [2021-06-10 12:25:58,300 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=181, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2021-06-10 12:25:58,301 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 20 predicate places. [2021-06-10 12:25:58,301 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 181 flow [2021-06-10 12:25:58,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 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) [2021-06-10 12:25:58,302 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:58,302 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:58,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:25:58,302 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash 837706890, now seen corresponding path program 1 times [2021-06-10 12:25:58,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:58,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758665373] [2021-06-10 12:25:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:58,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:58,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:58,405 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:58,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:58,417 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:58,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:58,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:58,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:58,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758665373] [2021-06-10 12:25:58,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:58,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:58,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084725513] [2021-06-10 12:25:58,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:58,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:58,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:58,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:58,470 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:25:58,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:58,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:25:58,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:58,804 INFO L129 PetriNetUnfolder]: 225/650 cut-off events. [2021-06-10 12:25:58,804 INFO L130 PetriNetUnfolder]: For 1097/1266 co-relation queries the response was YES. [2021-06-10 12:25:58,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 650 events. 225/650 cut-off events. For 1097/1266 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4145 event pairs, 10 based on Foata normal form. 20/662 useless extension candidates. Maximal degree in co-relation 1749. Up to 121 conditions per place. [2021-06-10 12:25:58,810 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 28 selfloop transitions, 16 changer transitions 62/150 dead transitions. [2021-06-10 12:25:58,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 150 transitions, 965 flow [2021-06-10 12:25:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:25:58,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:25:58,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1046 transitions. [2021-06-10 12:25:58,813 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8203921568627451 [2021-06-10 12:25:58,813 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1046 transitions. [2021-06-10 12:25:58,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1046 transitions. [2021-06-10 12:25:58,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:58,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1046 transitions. [2021-06-10 12:25:58,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.529411764705884) internal successors, (1046), 17 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,820 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 75.0) internal successors, (1350), 18 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,820 INFO L185 Difference]: Start difference. First operand has 89 places, 61 transitions, 181 flow. Second operand 17 states and 1046 transitions. [2021-06-10 12:25:58,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 150 transitions, 965 flow [2021-06-10 12:25:58,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 843 flow, removed 40 selfloop flow, removed 8 redundant places. [2021-06-10 12:25:58,828 INFO L241 Difference]: Finished difference. Result has 104 places, 72 transitions, 356 flow [2021-06-10 12:25:58,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=356, PETRI_PLACES=104, PETRI_TRANSITIONS=72} [2021-06-10 12:25:58,829 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 35 predicate places. [2021-06-10 12:25:58,829 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 72 transitions, 356 flow [2021-06-10 12:25:58,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:58,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:58,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:25:58,830 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:58,830 INFO L82 PathProgramCache]: Analyzing trace with hash -230773877, now seen corresponding path program 1 times [2021-06-10 12:25:58,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:58,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876366440] [2021-06-10 12:25:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:58,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:58,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:58,899 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:25:58,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:25:58,914 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:58,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:58,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:58,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:58,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:58,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:58,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876366440] [2021-06-10 12:25:58,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:58,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:25:58,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439189031] [2021-06-10 12:25:58,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:25:58,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:25:58,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:25:58,954 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:25:58,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 72 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:58,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:58,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:25:58,957 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:59,185 INFO L129 PetriNetUnfolder]: 117/408 cut-off events. [2021-06-10 12:25:59,186 INFO L130 PetriNetUnfolder]: For 3253/3590 co-relation queries the response was YES. [2021-06-10 12:25:59,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 408 events. 117/408 cut-off events. For 3253/3590 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2222 event pairs, 10 based on Foata normal form. 16/418 useless extension candidates. Maximal degree in co-relation 1728. Up to 84 conditions per place. [2021-06-10 12:25:59,191 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 18 selfloop transitions, 9 changer transitions 44/115 dead transitions. [2021-06-10 12:25:59,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 115 transitions, 999 flow [2021-06-10 12:25:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:25:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:25:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 669 transitions. [2021-06-10 12:25:59,194 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8109090909090909 [2021-06-10 12:25:59,194 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 669 transitions. [2021-06-10 12:25:59,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 669 transitions. [2021-06-10 12:25:59,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:59,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 669 transitions. [2021-06-10 12:25:59,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 60.81818181818182) internal successors, (669), 11 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,198 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,198 INFO L185 Difference]: Start difference. First operand has 104 places, 72 transitions, 356 flow. Second operand 11 states and 669 transitions. [2021-06-10 12:25:59,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 115 transitions, 999 flow [2021-06-10 12:25:59,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 795 flow, removed 102 selfloop flow, removed 9 redundant places. [2021-06-10 12:25:59,208 INFO L241 Difference]: Finished difference. Result has 101 places, 65 transitions, 282 flow [2021-06-10 12:25:59,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=101, PETRI_TRANSITIONS=65} [2021-06-10 12:25:59,209 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-06-10 12:25:59,209 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 65 transitions, 282 flow [2021-06-10 12:25:59,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,209 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:59,210 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:59,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:25:59,210 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2112886337, now seen corresponding path program 1 times [2021-06-10 12:25:59,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:59,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531773774] [2021-06-10 12:25:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:59,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:59,249 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:25:59,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:25:59,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:59,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:59,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:59,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531773774] [2021-06-10 12:25:59,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:59,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:25:59,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494010058] [2021-06-10 12:25:59,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:25:59,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:25:59,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:25:59,286 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 75 [2021-06-10 12:25:59,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 65 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:59,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 75 [2021-06-10 12:25:59,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:59,408 INFO L129 PetriNetUnfolder]: 42/247 cut-off events. [2021-06-10 12:25:59,408 INFO L130 PetriNetUnfolder]: For 792/827 co-relation queries the response was YES. [2021-06-10 12:25:59,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 247 events. 42/247 cut-off events. For 792/827 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1229 event pairs, 18 based on Foata normal form. 12/256 useless extension candidates. Maximal degree in co-relation 790. Up to 45 conditions per place. [2021-06-10 12:25:59,410 INFO L132 encePairwiseOnDemand]: 68/75 looper letters, 8 selfloop transitions, 5 changer transitions 19/85 dead transitions. [2021-06-10 12:25:59,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 85 transitions, 532 flow [2021-06-10 12:25:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:25:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:25:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 590 transitions. [2021-06-10 12:25:59,413 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8740740740740741 [2021-06-10 12:25:59,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 590 transitions. [2021-06-10 12:25:59,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 590 transitions. [2021-06-10 12:25:59,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:59,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 590 transitions. [2021-06-10 12:25:59,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.55555555555556) internal successors, (590), 9 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,416 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,416 INFO L185 Difference]: Start difference. First operand has 101 places, 65 transitions, 282 flow. Second operand 9 states and 590 transitions. [2021-06-10 12:25:59,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 85 transitions, 532 flow [2021-06-10 12:25:59,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 418 flow, removed 27 selfloop flow, removed 13 redundant places. [2021-06-10 12:25:59,420 INFO L241 Difference]: Finished difference. Result has 97 places, 66 transitions, 268 flow [2021-06-10 12:25:59,421 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=97, PETRI_TRANSITIONS=66} [2021-06-10 12:25:59,421 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 28 predicate places. [2021-06-10 12:25:59,421 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 66 transitions, 268 flow [2021-06-10 12:25:59,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,421 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:59,421 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:59,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:25:59,422 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash -804749950, now seen corresponding path program 1 times [2021-06-10 12:25:59,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:59,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018494830] [2021-06-10 12:25:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:59,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:59,478 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:59,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:59,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:59,508 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:59,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:59,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018494830] [2021-06-10 12:25:59,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:59,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:25:59,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690031041] [2021-06-10 12:25:59,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:25:59,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:59,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:25:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:25:59,528 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:25:59,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 66 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:59,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:25:59,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:25:59,716 INFO L129 PetriNetUnfolder]: 315/818 cut-off events. [2021-06-10 12:25:59,716 INFO L130 PetriNetUnfolder]: For 955/1007 co-relation queries the response was YES. [2021-06-10 12:25:59,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 818 events. 315/818 cut-off events. For 955/1007 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5505 event pairs, 52 based on Foata normal form. 3/744 useless extension candidates. Maximal degree in co-relation 1832. Up to 212 conditions per place. [2021-06-10 12:25:59,725 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 24 selfloop transitions, 17 changer transitions 0/96 dead transitions. [2021-06-10 12:25:59,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 410 flow [2021-06-10 12:25:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:25:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:25:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-06-10 12:25:59,730 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-06-10 12:25:59,731 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-06-10 12:25:59,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-06-10 12:25:59,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:25:59,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-06-10 12:25:59,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,736 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,736 INFO L185 Difference]: Start difference. First operand has 97 places, 66 transitions, 268 flow. Second operand 10 states and 653 transitions. [2021-06-10 12:25:59,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 410 flow [2021-06-10 12:25:59,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 387 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-10 12:25:59,741 INFO L241 Difference]: Finished difference. Result has 102 places, 81 transitions, 365 flow [2021-06-10 12:25:59,741 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=365, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2021-06-10 12:25:59,742 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 33 predicate places. [2021-06-10 12:25:59,742 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 365 flow [2021-06-10 12:25:59,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,742 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:25:59,742 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:25:59,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:25:59,743 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:25:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:25:59,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1260331867, now seen corresponding path program 1 times [2021-06-10 12:25:59,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:25:59,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538323638] [2021-06-10 12:25:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:25:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:25:59,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:59,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:25:59,824 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:25:59,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:25:59,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:25:59,865 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:25:59,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:25:59,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:25:59,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:25:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:25:59,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538323638] [2021-06-10 12:25:59,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:25:59,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:25:59,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123968612] [2021-06-10 12:25:59,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:25:59,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:25:59,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:25:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:25:59,875 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:25:59,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 365 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:25:59,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:25:59,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:25:59,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:00,080 INFO L129 PetriNetUnfolder]: 291/800 cut-off events. [2021-06-10 12:26:00,081 INFO L130 PetriNetUnfolder]: For 1886/2159 co-relation queries the response was YES. [2021-06-10 12:26:00,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2741 conditions, 800 events. 291/800 cut-off events. For 1886/2159 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5662 event pairs, 4 based on Foata normal form. 85/829 useless extension candidates. Maximal degree in co-relation 2718. Up to 306 conditions per place. [2021-06-10 12:26:00,088 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 20 selfloop transitions, 32 changer transitions 9/116 dead transitions. [2021-06-10 12:26:00,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 116 transitions, 711 flow [2021-06-10 12:26:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-10 12:26:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-10 12:26:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 850 transitions. [2021-06-10 12:26:00,090 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2021-06-10 12:26:00,091 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 850 transitions. [2021-06-10 12:26:00,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 850 transitions. [2021-06-10 12:26:00,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:00,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 850 transitions. [2021-06-10 12:26:00,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.38461538461539) internal successors, (850), 13 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,095 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,095 INFO L185 Difference]: Start difference. First operand has 102 places, 81 transitions, 365 flow. Second operand 13 states and 850 transitions. [2021-06-10 12:26:00,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 116 transitions, 711 flow [2021-06-10 12:26:00,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 701 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-10 12:26:00,101 INFO L241 Difference]: Finished difference. Result has 116 places, 101 transitions, 598 flow [2021-06-10 12:26:00,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=598, PETRI_PLACES=116, PETRI_TRANSITIONS=101} [2021-06-10 12:26:00,101 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 47 predicate places. [2021-06-10 12:26:00,101 INFO L480 AbstractCegarLoop]: Abstraction has has 116 places, 101 transitions, 598 flow [2021-06-10 12:26:00,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,102 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:00,102 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:00,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:26:00,102 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:00,102 INFO L82 PathProgramCache]: Analyzing trace with hash -118874370, now seen corresponding path program 1 times [2021-06-10 12:26:00,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:00,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732000521] [2021-06-10 12:26:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:00,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:00,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:00,133 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:26:00,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:26:00,140 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:26:00,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:26:00,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:00,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:00,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:00,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732000521] [2021-06-10 12:26:00,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:00,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:26:00,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488343623] [2021-06-10 12:26:00,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:26:00,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:00,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:26:00,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:26:00,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-06-10 12:26:00,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 101 transitions, 598 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:00,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-06-10 12:26:00,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:00,324 INFO L129 PetriNetUnfolder]: 172/725 cut-off events. [2021-06-10 12:26:00,324 INFO L130 PetriNetUnfolder]: For 2206/2364 co-relation queries the response was YES. [2021-06-10 12:26:00,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 725 events. 172/725 cut-off events. For 2206/2364 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5550 event pairs, 0 based on Foata normal form. 13/699 useless extension candidates. Maximal degree in co-relation 2427. Up to 201 conditions per place. [2021-06-10 12:26:00,331 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 18 selfloop transitions, 12 changer transitions 11/117 dead transitions. [2021-06-10 12:26:00,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 117 transitions, 799 flow [2021-06-10 12:26:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:26:00,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:26:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 482 transitions. [2021-06-10 12:26:00,333 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8033333333333333 [2021-06-10 12:26:00,333 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 482 transitions. [2021-06-10 12:26:00,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 482 transitions. [2021-06-10 12:26:00,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:00,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 482 transitions. [2021-06-10 12:26:00,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,335 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,336 INFO L185 Difference]: Start difference. First operand has 116 places, 101 transitions, 598 flow. Second operand 8 states and 482 transitions. [2021-06-10 12:26:00,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 117 transitions, 799 flow [2021-06-10 12:26:00,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 685 flow, removed 44 selfloop flow, removed 6 redundant places. [2021-06-10 12:26:00,351 INFO L241 Difference]: Finished difference. Result has 122 places, 102 transitions, 563 flow [2021-06-10 12:26:00,351 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=122, PETRI_TRANSITIONS=102} [2021-06-10 12:26:00,351 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 53 predicate places. [2021-06-10 12:26:00,351 INFO L480 AbstractCegarLoop]: Abstraction has has 122 places, 102 transitions, 563 flow [2021-06-10 12:26:00,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,352 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:26:00,352 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:26:00,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:26:00,352 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:26:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:26:00,352 INFO L82 PathProgramCache]: Analyzing trace with hash -166080178, now seen corresponding path program 2 times [2021-06-10 12:26:00,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:26:00,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771057646] [2021-06-10 12:26:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:26:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:26:00,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:00,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:00,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:00,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:26:00,419 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:26:00,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:26:00,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:26:00,442 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:26:00,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:26:00,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:26:00,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:26:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:26:00,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771057646] [2021-06-10 12:26:00,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:26:00,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:26:00,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897434024] [2021-06-10 12:26:00,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:26:00,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:26:00,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:26:00,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:26:00,453 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-06-10 12:26:00,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 102 transitions, 563 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:26:00,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-06-10 12:26:00,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:26:00,733 INFO L129 PetriNetUnfolder]: 231/720 cut-off events. [2021-06-10 12:26:00,733 INFO L130 PetriNetUnfolder]: For 991/1495 co-relation queries the response was YES. [2021-06-10 12:26:00,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 720 events. 231/720 cut-off events. For 991/1495 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5607 event pairs, 0 based on Foata normal form. 107/763 useless extension candidates. Maximal degree in co-relation 2176. Up to 126 conditions per place. [2021-06-10 12:26:00,739 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2021-06-10 12:26:00,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 108 transitions, 682 flow [2021-06-10 12:26:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-10 12:26:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-10 12:26:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 962 transitions. [2021-06-10 12:26:00,741 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8551111111111112 [2021-06-10 12:26:00,742 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 962 transitions. [2021-06-10 12:26:00,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 962 transitions. [2021-06-10 12:26:00,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:26:00,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 962 transitions. [2021-06-10 12:26:00,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 64.13333333333334) internal successors, (962), 15 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,747 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,747 INFO L185 Difference]: Start difference. First operand has 122 places, 102 transitions, 563 flow. Second operand 15 states and 962 transitions. [2021-06-10 12:26:00,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 108 transitions, 682 flow [2021-06-10 12:26:00,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 108 transitions, 612 flow, removed 20 selfloop flow, removed 12 redundant places. [2021-06-10 12:26:00,757 INFO L241 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2021-06-10 12:26:00,758 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2021-06-10 12:26:00,758 INFO L343 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2021-06-10 12:26:00,758 INFO L480 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2021-06-10 12:26:00,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:26:00,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:26:00,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:26:00 BasicIcfg [2021-06-10 12:26:00,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:26:00,763 INFO L168 Benchmark]: Toolchain (without parser) took 4473.71 ms. Allocated memory was 367.0 MB in the beginning and 492.8 MB in the end (delta: 125.8 MB). Free memory was 329.9 MB in the beginning and 444.2 MB in the end (delta: -114.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:00,765 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 367.0 MB. Free memory was 348.2 MB in the beginning and 348.1 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:26:00,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.58 ms. Allocated memory is still 367.0 MB. Free memory was 329.7 MB in the beginning and 330.5 MB in the end (delta: -833.5 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:00,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.92 ms. Allocated memory is still 367.0 MB. Free memory was 330.5 MB in the beginning and 328.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:00,769 INFO L168 Benchmark]: Boogie Preprocessor took 18.48 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 327.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:00,770 INFO L168 Benchmark]: RCFGBuilder took 308.52 ms. Allocated memory is still 367.0 MB. Free memory was 327.1 MB in the beginning and 304.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:26:00,771 INFO L168 Benchmark]: TraceAbstraction took 3591.39 ms. Allocated memory was 367.0 MB in the beginning and 492.8 MB in the end (delta: 125.8 MB). Free memory was 304.0 MB in the beginning and 444.2 MB in the end (delta: -140.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:26:00,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 367.0 MB. Free memory was 348.2 MB in the beginning and 348.1 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 490.58 ms. Allocated memory is still 367.0 MB. Free memory was 329.7 MB in the beginning and 330.5 MB in the end (delta: -833.5 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.92 ms. Allocated memory is still 367.0 MB. Free memory was 330.5 MB in the beginning and 328.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.48 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 327.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 308.52 ms. Allocated memory is still 367.0 MB. Free memory was 327.1 MB in the beginning and 304.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3591.39 ms. Allocated memory was 367.0 MB in the beginning and 492.8 MB in the end (delta: 125.8 MB). Free memory was 304.0 MB in the beginning and 444.2 MB in the end (delta: -140.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 31.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3462.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2099.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 62.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 120 SDtfs, 339 SDslu, 406 SDs, 0 SdLazy, 368 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 286.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1090.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=598occurred in iteration=6, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.7ms SsaConstructionTime, 179.4ms SatisfiabilityAnalysisTime, 861.2ms InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 1432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...