/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:20:45,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:20:45,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:20:45,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:20:45,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:20:45,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:20:45,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:20:45,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:20:45,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:20:45,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:20:45,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:20:45,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:20:45,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:20:45,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:20:45,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:20:45,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:20:45,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:20:45,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:20:45,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:20:45,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:20:45,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:20:45,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:20:45,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:20:45,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:20:45,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 21:20:45,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 21:20:45,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 21:20:45,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 21:20:45,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 21:20:45,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 21:20:45,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:20:45,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:20:45,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:20:45,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:20:45,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:20:45,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:20:45,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:20:45,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:20:45,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:20:45,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:20:45,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:20:45,929 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-SemanticLbe.epf [2021-06-10 21:20:45,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:20:45,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:20:45,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:20:45,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:20:45,953 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:20:45,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:20:45,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:20:45,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:20:45,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:20:45,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:20:45,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:20:45,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:20:45,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:20:45,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:20:45,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:20:45,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:20:45,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:20:46,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:20:46,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:20:46,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:20:46,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:20:46,228 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:20:46,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-06-10 21:20:46,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525352d6e/f6ad3b4fb0514c4798b99353aaa2d527/FLAG0d85f5c4f [2021-06-10 21:20:46,704 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:20:46,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-06-10 21:20:46,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525352d6e/f6ad3b4fb0514c4798b99353aaa2d527/FLAG0d85f5c4f [2021-06-10 21:20:46,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525352d6e/f6ad3b4fb0514c4798b99353aaa2d527 [2021-06-10 21:20:46,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:20:46,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:20:46,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:20:46,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:20:46,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:20:46,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:20:46" (1/1) ... [2021-06-10 21:20:46,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d18da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:46, skipping insertion in model container [2021-06-10 21:20:46,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:20:46" (1/1) ... [2021-06-10 21:20:46,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:20:46,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:20:46,930 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/safe017_tso.opt.i[949,962] [2021-06-10 21:20:47,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:20:47,060 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:20:47,068 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/safe017_tso.opt.i[949,962] [2021-06-10 21:20:47,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:20:47,144 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:20:47,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47 WrapperNode [2021-06-10 21:20:47,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:20:47,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:20:47,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:20:47,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:20:47,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:20:47,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:20:47,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:20:47,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:20:47,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (1/1) ... [2021-06-10 21:20:47,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:20:47,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:20:47,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:20:47,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:20:47,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (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 21:20:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:20:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:20:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:20:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:20:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:20:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:20:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:20:47,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:20:47,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:20:47,267 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 21:20:47,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:20:47,466 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:20:47,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:20:47 BoogieIcfgContainer [2021-06-10 21:20:47,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:20:47,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:20:47,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:20:47,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:20:47,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:20:46" (1/3) ... [2021-06-10 21:20:47,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f57476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:20:47, skipping insertion in model container [2021-06-10 21:20:47,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:20:47" (2/3) ... [2021-06-10 21:20:47,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f57476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:20:47, skipping insertion in model container [2021-06-10 21:20:47,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:20:47" (3/3) ... [2021-06-10 21:20:47,472 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-06-10 21:20:47,476 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:20:47,479 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:20:47,479 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,498 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,499 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,500 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,501 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,502 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,503 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,504 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,504 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,509 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,509 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,509 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,509 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:20:47,510 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:20:47,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:20:47,534 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:20:47,535 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:20:47,535 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:20:47,535 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:20:47,535 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:20:47,535 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:20:47,535 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:20:47,535 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:20:47,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 72 transitions, 159 flow [2021-06-10 21:20:47,563 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2021-06-10 21:20:47,563 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:47,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 21:20:47,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 72 transitions, 159 flow [2021-06-10 21:20:47,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:47,573 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:20:47,580 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:47,583 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:47,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 57 transitions, 123 flow [2021-06-10 21:20:47,599 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-06-10 21:20:47,600 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:47,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-06-10 21:20:47,603 INFO L151 LiptonReduction]: Number of co-enabled transitions 804 [2021-06-10 21:20:47,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:47,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:47,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:47,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:47,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:47,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:47,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:47,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:47,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:47,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:47,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:47,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:47,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:48,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:48,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:48,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:48,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:20:48,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:48,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,418 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:20:48,430 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-06-10 21:20:48,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:48,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:48,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:48,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:48,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:48,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:48,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:48,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:48,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:48,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:48,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:48,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:49,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:49,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:49,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:20:49,379 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-10 21:20:49,566 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-10 21:20:49,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:20:49,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:20:49,632 INFO L163 LiptonReduction]: Checked pairs total: 1516 [2021-06-10 21:20:49,633 INFO L165 LiptonReduction]: Total number of compositions: 45 [2021-06-10 21:20:49,634 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2061 [2021-06-10 21:20:49,639 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:20:49,640 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:49,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:49,640 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:49,640 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1767820329, now seen corresponding path program 1 times [2021-06-10 21:20:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:49,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290532042] [2021-06-10 21:20:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:49,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:49,735 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 21:20:49,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290532042] [2021-06-10 21:20:49,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:49,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:49,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632912164] [2021-06-10 21:20:49,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:20:49,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:20:49,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:20:49,751 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 117 [2021-06-10 21:20:49,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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 21:20:49,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:49,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 117 [2021-06-10 21:20:49,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:49,760 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 21:20:49,760 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:49,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:20:49,760 INFO L132 encePairwiseOnDemand]: 116/117 looper letters, 0 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2021-06-10 21:20:49,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 41 flow [2021-06-10 21:20:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:20:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:20:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 221 transitions. [2021-06-10 21:20:49,768 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9444444444444444 [2021-06-10 21:20:49,769 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 221 transitions. [2021-06-10 21:20:49,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 221 transitions. [2021-06-10 21:20:49,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:49,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 221 transitions. [2021-06-10 21:20:49,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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 21:20:49,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:49,780 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:49,781 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 2 states and 221 transitions. [2021-06-10 21:20:49,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 41 flow [2021-06-10 21:20:49,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 38 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:20:49,785 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-06-10 21:20:49,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-06-10 21:20:49,786 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-06-10 21:20:49,786 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-06-10 21:20:49,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 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 21:20:49,787 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:49,787 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:49,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:20:49,787 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:49,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1032144776, now seen corresponding path program 1 times [2021-06-10 21:20:49,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:49,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902662514] [2021-06-10 21:20:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:49,860 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:49,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:49,867 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 21:20:49,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902662514] [2021-06-10 21:20:49,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:49,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:49,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936272251] [2021-06-10 21:20:49,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:49,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:49,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:49,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:49,869 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:49,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 21:20:49,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:49,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:49,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:49,892 INFO L129 PetriNetUnfolder]: 45/132 cut-off events. [2021-06-10 21:20:49,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:20:49,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 132 events. 45/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 609 event pairs, 17 based on Foata normal form. 9/134 useless extension candidates. Maximal degree in co-relation 232. Up to 62 conditions per place. [2021-06-10 21:20:49,893 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 6 selfloop transitions, 6 changer transitions 0/21 dead transitions. [2021-06-10 21:20:49,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 21 transitions, 72 flow [2021-06-10 21:20:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:49,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2021-06-10 21:20:49,895 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7720797720797721 [2021-06-10 21:20:49,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2021-06-10 21:20:49,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2021-06-10 21:20:49,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:49,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2021-06-10 21:20:49,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 21:20:49,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,897 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 271 transitions. [2021-06-10 21:20:49,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 21 transitions, 72 flow [2021-06-10 21:20:49,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:49,898 INFO L241 Difference]: Finished difference. Result has 28 places, 21 transitions, 84 flow [2021-06-10 21:20:49,898 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2021-06-10 21:20:49,898 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-06-10 21:20:49,898 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 84 flow [2021-06-10 21:20:49,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 21:20:49,898 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:49,898 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:49,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:20:49,899 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:49,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1931717483, now seen corresponding path program 1 times [2021-06-10 21:20:49,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:49,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532188048] [2021-06-10 21:20:49,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:49,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:49,927 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 21:20:49,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532188048] [2021-06-10 21:20:49,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:49,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:49,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410407664] [2021-06-10 21:20:49,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:49,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:49,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:49,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:49,928 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 117 [2021-06-10 21:20:49,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:20:49,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:49,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 117 [2021-06-10 21:20:49,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:49,941 INFO L129 PetriNetUnfolder]: 30/98 cut-off events. [2021-06-10 21:20:49,942 INFO L130 PetriNetUnfolder]: For 35/82 co-relation queries the response was YES. [2021-06-10 21:20:49,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 98 events. 30/98 cut-off events. For 35/82 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 409 event pairs, 5 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 257. Up to 46 conditions per place. [2021-06-10 21:20:49,942 INFO L132 encePairwiseOnDemand]: 113/117 looper letters, 9 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2021-06-10 21:20:49,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 142 flow [2021-06-10 21:20:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2021-06-10 21:20:49,944 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8376068376068376 [2021-06-10 21:20:49,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2021-06-10 21:20:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2021-06-10 21:20:49,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:49,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2021-06-10 21:20:49,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 21:20:49,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,946 INFO L185 Difference]: Start difference. First operand has 28 places, 21 transitions, 84 flow. Second operand 3 states and 294 transitions. [2021-06-10 21:20:49,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 142 flow [2021-06-10 21:20:49,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:20:49,948 INFO L241 Difference]: Finished difference. Result has 29 places, 25 transitions, 113 flow [2021-06-10 21:20:49,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2021-06-10 21:20:49,948 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2021-06-10 21:20:49,948 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 113 flow [2021-06-10 21:20:49,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:20:49,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:49,948 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:49,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:20:49,948 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1931717421, now seen corresponding path program 1 times [2021-06-10 21:20:49,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:49,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794717619] [2021-06-10 21:20:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:49,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:49,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:49,971 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 21:20:49,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794717619] [2021-06-10 21:20:49,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:49,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:20:49,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323189628] [2021-06-10 21:20:49,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:20:49,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:49,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:20:49,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:20:49,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 117 [2021-06-10 21:20:49,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:20:49,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:49,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 117 [2021-06-10 21:20:49,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:49,983 INFO L129 PetriNetUnfolder]: 25/90 cut-off events. [2021-06-10 21:20:49,983 INFO L130 PetriNetUnfolder]: For 58/88 co-relation queries the response was YES. [2021-06-10 21:20:49,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 90 events. 25/90 cut-off events. For 58/88 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 354 event pairs, 6 based on Foata normal form. 3/90 useless extension candidates. Maximal degree in co-relation 216. Up to 38 conditions per place. [2021-06-10 21:20:49,984 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2021-06-10 21:20:49,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 121 flow [2021-06-10 21:20:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:20:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:20:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2021-06-10 21:20:49,985 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8404558404558404 [2021-06-10 21:20:49,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2021-06-10 21:20:49,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2021-06-10 21:20:49,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:49,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2021-06-10 21:20:49,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 21:20:49,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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 21:20:49,987 INFO L185 Difference]: Start difference. First operand has 29 places, 25 transitions, 113 flow. Second operand 3 states and 295 transitions. [2021-06-10 21:20:49,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 121 flow [2021-06-10 21:20:49,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:20:49,989 INFO L241 Difference]: Finished difference. Result has 31 places, 25 transitions, 119 flow [2021-06-10 21:20:49,989 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2021-06-10 21:20:49,989 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-06-10 21:20:49,989 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 119 flow [2021-06-10 21:20:49,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:20:49,989 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:49,989 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:49,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:20:49,990 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:49,990 INFO L82 PathProgramCache]: Analyzing trace with hash 246301532, now seen corresponding path program 1 times [2021-06-10 21:20:49,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:49,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680179051] [2021-06-10 21:20:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,012 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:50,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:50,017 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 21:20:50,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680179051] [2021-06-10 21:20:50,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:50,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538469136] [2021-06-10 21:20:50,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:50,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:50,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:50,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 21:20:50,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,037 INFO L129 PetriNetUnfolder]: 23/86 cut-off events. [2021-06-10 21:20:50,037 INFO L130 PetriNetUnfolder]: For 50/84 co-relation queries the response was YES. [2021-06-10 21:20:50,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 86 events. 23/86 cut-off events. For 50/84 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 324 event pairs, 3 based on Foata normal form. 12/97 useless extension candidates. Maximal degree in co-relation 260. Up to 35 conditions per place. [2021-06-10 21:20:50,038 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 12 selfloop transitions, 11 changer transitions 0/32 dead transitions. [2021-06-10 21:20:50,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 203 flow [2021-06-10 21:20:50,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:50,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2021-06-10 21:20:50,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7713675213675214 [2021-06-10 21:20:50,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2021-06-10 21:20:50,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2021-06-10 21:20:50,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2021-06-10 21:20:50,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,041 INFO L185 Difference]: Start difference. First operand has 31 places, 25 transitions, 119 flow. Second operand 4 states and 361 transitions. [2021-06-10 21:20:50,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 203 flow [2021-06-10 21:20:50,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:20:50,043 INFO L241 Difference]: Finished difference. Result has 34 places, 30 transitions, 178 flow [2021-06-10 21:20:50,043 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2021-06-10 21:20:50,043 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2021-06-10 21:20:50,043 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 178 flow [2021-06-10 21:20:50,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 21:20:50,043 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,043 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,043 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:20:50,044 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1723058562, now seen corresponding path program 1 times [2021-06-10 21:20:50,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698210600] [2021-06-10 21:20:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:50,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,065 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:50,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:50,070 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 21:20:50,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698210600] [2021-06-10 21:20:50,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:20:50,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365158646] [2021-06-10 21:20:50,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:50,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:50,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 21:20:50,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,088 INFO L129 PetriNetUnfolder]: 19/84 cut-off events. [2021-06-10 21:20:50,088 INFO L130 PetriNetUnfolder]: For 105/169 co-relation queries the response was YES. [2021-06-10 21:20:50,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 84 events. 19/84 cut-off events. For 105/169 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 339 event pairs, 2 based on Foata normal form. 13/95 useless extension candidates. Maximal degree in co-relation 295. Up to 32 conditions per place. [2021-06-10 21:20:50,089 INFO L132 encePairwiseOnDemand]: 110/117 looper letters, 8 selfloop transitions, 14 changer transitions 0/31 dead transitions. [2021-06-10 21:20:50,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 229 flow [2021-06-10 21:20:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 359 transitions. [2021-06-10 21:20:50,090 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7670940170940171 [2021-06-10 21:20:50,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 359 transitions. [2021-06-10 21:20:50,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 359 transitions. [2021-06-10 21:20:50,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 359 transitions. [2021-06-10 21:20:50,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 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 21:20:50,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,092 INFO L185 Difference]: Start difference. First operand has 34 places, 30 transitions, 178 flow. Second operand 4 states and 359 transitions. [2021-06-10 21:20:50,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 229 flow [2021-06-10 21:20:50,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:50,094 INFO L241 Difference]: Finished difference. Result has 39 places, 31 transitions, 235 flow [2021-06-10 21:20:50,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2021-06-10 21:20:50,094 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2021-06-10 21:20:50,094 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 235 flow [2021-06-10 21:20:50,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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 21:20:50,095 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,095 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:20:50,095 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1197948411, now seen corresponding path program 1 times [2021-06-10 21:20:50,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264213162] [2021-06-10 21:20:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,116 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 21:20:50,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264213162] [2021-06-10 21:20:50,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:50,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282711374] [2021-06-10 21:20:50,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:50,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:50,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:50,118 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 117 [2021-06-10 21:20:50,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 21:20:50,119 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,119 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 117 [2021-06-10 21:20:50,119 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,136 INFO L129 PetriNetUnfolder]: 17/100 cut-off events. [2021-06-10 21:20:50,137 INFO L130 PetriNetUnfolder]: For 296/337 co-relation queries the response was YES. [2021-06-10 21:20:50,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 100 events. 17/100 cut-off events. For 296/337 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 483 event pairs, 0 based on Foata normal form. 14/113 useless extension candidates. Maximal degree in co-relation 384. Up to 33 conditions per place. [2021-06-10 21:20:50,137 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 6 selfloop transitions, 6 changer transitions 7/35 dead transitions. [2021-06-10 21:20:50,137 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 311 flow [2021-06-10 21:20:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:20:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:20:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2021-06-10 21:20:50,138 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7927350427350427 [2021-06-10 21:20:50,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2021-06-10 21:20:50,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2021-06-10 21:20:50,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2021-06-10 21:20:50,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 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 21:20:50,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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 21:20:50,140 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 235 flow. Second operand 4 states and 371 transitions. [2021-06-10 21:20:50,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 311 flow [2021-06-10 21:20:50,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 299 flow, removed 6 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:50,143 INFO L241 Difference]: Finished difference. Result has 43 places, 27 transitions, 211 flow [2021-06-10 21:20:50,143 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=211, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2021-06-10 21:20:50,143 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2021-06-10 21:20:50,143 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 211 flow [2021-06-10 21:20:50,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 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 21:20:50,143 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,143 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:20:50,143 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1528453577, now seen corresponding path program 2 times [2021-06-10 21:20:50,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412933345] [2021-06-10 21:20:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:50,168 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 21:20:50,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412933345] [2021-06-10 21:20:50,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:20:50,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756938198] [2021-06-10 21:20:50,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:20:50,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:20:50,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:20:50,170 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,201 INFO L129 PetriNetUnfolder]: 95/231 cut-off events. [2021-06-10 21:20:50,201 INFO L130 PetriNetUnfolder]: For 777/845 co-relation queries the response was YES. [2021-06-10 21:20:50,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 231 events. 95/231 cut-off events. For 777/845 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1258 event pairs, 33 based on Foata normal form. 26/239 useless extension candidates. Maximal degree in co-relation 659. Up to 145 conditions per place. [2021-06-10 21:20:50,202 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 7 changer transitions 4/37 dead transitions. [2021-06-10 21:20:50,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 263 flow [2021-06-10 21:20:50,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:20:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:20:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2021-06-10 21:20:50,203 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7658119658119659 [2021-06-10 21:20:50,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2021-06-10 21:20:50,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2021-06-10 21:20:50,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2021-06-10 21:20:50,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 21:20:50,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 21:20:50,205 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 211 flow. Second operand 5 states and 448 transitions. [2021-06-10 21:20:50,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 263 flow [2021-06-10 21:20:50,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 239 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 21:20:50,207 INFO L241 Difference]: Finished difference. Result has 46 places, 33 transitions, 237 flow [2021-06-10 21:20:50,208 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2021-06-10 21:20:50,208 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2021-06-10 21:20:50,208 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 237 flow [2021-06-10 21:20:50,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,208 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,208 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:20:50,208 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,209 INFO L82 PathProgramCache]: Analyzing trace with hash 100391820, now seen corresponding path program 1 times [2021-06-10 21:20:50,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941113189] [2021-06-10 21:20:50,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:50,237 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 21:20:50,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941113189] [2021-06-10 21:20:50,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:20:50,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377565354] [2021-06-10 21:20:50,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:20:50,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:20:50,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:20:50,239 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,287 INFO L129 PetriNetUnfolder]: 54/174 cut-off events. [2021-06-10 21:20:50,287 INFO L130 PetriNetUnfolder]: For 735/942 co-relation queries the response was YES. [2021-06-10 21:20:50,288 INFO L84 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 174 events. 54/174 cut-off events. For 735/942 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 979 event pairs, 4 based on Foata normal form. 77/241 useless extension candidates. Maximal degree in co-relation 655. Up to 76 conditions per place. [2021-06-10 21:20:50,288 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 5 selfloop transitions, 10 changer transitions 11/43 dead transitions. [2021-06-10 21:20:50,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 327 flow [2021-06-10 21:20:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:20:50,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:20:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 626 transitions. [2021-06-10 21:20:50,290 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7643467643467643 [2021-06-10 21:20:50,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 626 transitions. [2021-06-10 21:20:50,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 626 transitions. [2021-06-10 21:20:50,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 626 transitions. [2021-06-10 21:20:50,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.42857142857143) internal successors, (626), 7 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 21:20:50,292 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 21:20:50,293 INFO L185 Difference]: Start difference. First operand has 46 places, 33 transitions, 237 flow. Second operand 7 states and 626 transitions. [2021-06-10 21:20:50,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 327 flow [2021-06-10 21:20:50,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:20:50,295 INFO L241 Difference]: Finished difference. Result has 55 places, 32 transitions, 271 flow [2021-06-10 21:20:50,295 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=271, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2021-06-10 21:20:50,295 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2021-06-10 21:20:50,295 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 271 flow [2021-06-10 21:20:50,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,295 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,295 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:20:50,296 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1049838291, now seen corresponding path program 1 times [2021-06-10 21:20:50,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936541226] [2021-06-10 21:20:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:20:50,328 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 21:20:50,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936541226] [2021-06-10 21:20:50,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:20:50,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783593955] [2021-06-10 21:20:50,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:20:50,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:20:50,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:20:50,330 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 271 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,330 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,330 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,383 INFO L129 PetriNetUnfolder]: 22/88 cut-off events. [2021-06-10 21:20:50,383 INFO L130 PetriNetUnfolder]: For 605/881 co-relation queries the response was YES. [2021-06-10 21:20:50,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 88 events. 22/88 cut-off events. For 605/881 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 355 event pairs, 0 based on Foata normal form. 86/171 useless extension candidates. Maximal degree in co-relation 432. Up to 57 conditions per place. [2021-06-10 21:20:50,384 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 2 selfloop transitions, 10 changer transitions 14/36 dead transitions. [2021-06-10 21:20:50,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 36 transitions, 341 flow [2021-06-10 21:20:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:20:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:20:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 795 transitions. [2021-06-10 21:20:50,385 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7549857549857549 [2021-06-10 21:20:50,385 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 795 transitions. [2021-06-10 21:20:50,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 795 transitions. [2021-06-10 21:20:50,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 795 transitions. [2021-06-10 21:20:50,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.33333333333333) internal successors, (795), 9 states have internal predecessors, (795), 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 21:20:50,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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 21:20:50,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 117.0) internal successors, (1170), 10 states have internal predecessors, (1170), 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 21:20:50,389 INFO L185 Difference]: Start difference. First operand has 55 places, 32 transitions, 271 flow. Second operand 9 states and 795 transitions. [2021-06-10 21:20:50,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 36 transitions, 341 flow [2021-06-10 21:20:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 36 transitions, 304 flow, removed 7 selfloop flow, removed 6 redundant places. [2021-06-10 21:20:50,391 INFO L241 Difference]: Finished difference. Result has 59 places, 22 transitions, 188 flow [2021-06-10 21:20:50,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=59, PETRI_TRANSITIONS=22} [2021-06-10 21:20:50,391 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2021-06-10 21:20:50,391 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 22 transitions, 188 flow [2021-06-10 21:20:50,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:20:50,391 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:20:50,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:20:50,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 21:20:50,392 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:20:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:20:50,392 INFO L82 PathProgramCache]: Analyzing trace with hash -989031233, now seen corresponding path program 1 times [2021-06-10 21:20:50,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:20:50,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359196951] [2021-06-10 21:20:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:20:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:20:50,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:20:50,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:20:50,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:20:50,414 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:20:50,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:20:50,420 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 21:20:50,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359196951] [2021-06-10 21:20:50,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:20:50,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:20:50,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582848966] [2021-06-10 21:20:50,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:20:50,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:20:50,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:20:50,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:20:50,421 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 117 [2021-06-10 21:20:50,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 22 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 21:20:50,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:20:50,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 117 [2021-06-10 21:20:50,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:20:50,434 INFO L129 PetriNetUnfolder]: 6/28 cut-off events. [2021-06-10 21:20:50,435 INFO L130 PetriNetUnfolder]: For 101/107 co-relation queries the response was YES. [2021-06-10 21:20:50,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 28 events. 6/28 cut-off events. For 101/107 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 6/34 useless extension candidates. Maximal degree in co-relation 120. Up to 13 conditions per place. [2021-06-10 21:20:50,435 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-06-10 21:20:50,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 22 transitions, 191 flow [2021-06-10 21:20:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:20:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:20:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 524 transitions. [2021-06-10 21:20:50,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7464387464387464 [2021-06-10 21:20:50,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 524 transitions. [2021-06-10 21:20:50,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 524 transitions. [2021-06-10 21:20:50,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:20:50,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 524 transitions. [2021-06-10 21:20:50,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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 21:20:50,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 21:20:50,438 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 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 21:20:50,438 INFO L185 Difference]: Start difference. First operand has 59 places, 22 transitions, 188 flow. Second operand 6 states and 524 transitions. [2021-06-10 21:20:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 22 transitions, 191 flow [2021-06-10 21:20:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 109 flow, removed 11 selfloop flow, removed 18 redundant places. [2021-06-10 21:20:50,448 INFO L241 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2021-06-10 21:20:50,448 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2021-06-10 21:20:50,449 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2021-06-10 21:20:50,449 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2021-06-10 21:20:50,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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 21:20:50,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 21:20:50,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:20:50 BasicIcfg [2021-06-10 21:20:50,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:20:50,452 INFO L168 Benchmark]: Toolchain (without parser) took 3719.67 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 323.7 MB in the beginning and 411.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 240.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,452 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 360.7 MB. Free memory was 342.0 MB in the beginning and 341.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:20:50,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.27 ms. Allocated memory is still 360.7 MB. Free memory was 323.5 MB in the beginning and 322.6 MB in the end (delta: 893.2 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 360.7 MB. Free memory was 322.6 MB in the beginning and 320.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,453 INFO L168 Benchmark]: Boogie Preprocessor took 25.81 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 319.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,453 INFO L168 Benchmark]: RCFGBuilder took 249.44 ms. Allocated memory is still 360.7 MB. Free memory was 319.5 MB in the beginning and 295.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,454 INFO L168 Benchmark]: TraceAbstraction took 2982.85 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 295.4 MB in the beginning and 411.9 MB in the end (delta: -116.5 MB). Peak memory consumption was 212.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:20:50,455 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 360.7 MB. Free memory was 342.0 MB in the beginning and 341.9 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 412.27 ms. Allocated memory is still 360.7 MB. Free memory was 323.5 MB in the beginning and 322.6 MB in the end (delta: 893.2 kB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.95 ms. Allocated memory is still 360.7 MB. Free memory was 322.6 MB in the beginning and 320.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.81 ms. Allocated memory is still 360.7 MB. Free memory was 320.5 MB in the beginning and 319.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 249.44 ms. Allocated memory is still 360.7 MB. Free memory was 319.5 MB in the beginning and 295.4 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2982.85 ms. Allocated memory was 360.7 MB in the beginning and 434.1 MB in the end (delta: 73.4 MB). Free memory was 295.4 MB in the beginning and 411.9 MB in the end (delta: -116.5 MB). Peak memory consumption was 212.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2049.9ms, 66 PlacesBefore, 26 PlacesAfterwards, 57 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 45 TotalNumberOfCompositions, 1516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 909, positive: 838, positive conditional: 0, positive unconditional: 838, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 600, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 600, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 600, positive: 557, positive conditional: 0, positive unconditional: 557, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 109, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 88, negative conditional: 0, negative unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 909, positive: 274, positive conditional: 0, positive unconditional: 274, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 1061, Positive cache size: 1025, Positive conditional cache size: 0, Positive unconditional cache size: 1025, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36 - 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, 71 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2917.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 365.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2102.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 22 SDslu, 22 SDs, 0 SdLazy, 131 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=9, InterpolantAutomatonStates: 50, 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: 13.2ms SsaConstructionTime, 85.3ms SatisfiabilityAnalysisTime, 223.3ms InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...