/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:35:18,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:35:18,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:35:18,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:35:18,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:35:18,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:35:18,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:35:18,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:35:18,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:35:18,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:35:18,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:35:18,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:35:18,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:35:18,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:35:18,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:35:18,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:35:18,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:35:18,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:35:18,109 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:35:18,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:35:18,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:35:18,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:35:18,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:35:18,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:35:18,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:35:18,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:35:18,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:35:18,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:35:18,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:35:18,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:35:18,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:35:18,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:35:18,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:35:18,165 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:35:18,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:35:18,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:35:18,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:35:18,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:35:18,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:35:18,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:35:18,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:35:18,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:35:18,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:35:18,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:35:18,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:35:18,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:35:18,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:35:18,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:35:18,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:35:18,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:35:18,403 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:35:18,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_rmo.opt.i [2021-06-13 07:35:18,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653e0f99/e01de33a69724b0c979caa10fa94fced/FLAG16ba8e8e5 [2021-06-13 07:35:18,824 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:35:18,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_rmo.opt.i [2021-06-13 07:35:18,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653e0f99/e01de33a69724b0c979caa10fa94fced/FLAG16ba8e8e5 [2021-06-13 07:35:19,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c653e0f99/e01de33a69724b0c979caa10fa94fced [2021-06-13 07:35:19,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:35:19,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:35:19,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:35:19,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:35:19,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:35:19,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291054ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19, skipping insertion in model container [2021-06-13 07:35:19,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:35:19,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:35:19,456 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_rmo.opt.i[949,962] [2021-06-13 07:35:19,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:35:19,629 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:35:19,636 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_rmo.opt.i[949,962] [2021-06-13 07:35:19,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:35:19,716 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:35:19,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19 WrapperNode [2021-06-13 07:35:19,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:35:19,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:35:19,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:35:19,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:35:19,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:35:19,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:35:19,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:35:19,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:35:19,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (1/1) ... [2021-06-13 07:35:19,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:35:19,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:35:19,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:35:19,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:35:19,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (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 [2021-06-13 07:35:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:35:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:35:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:35:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:35:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:35:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:35:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:35:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:35:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:35:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:35:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:35:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:35:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:35:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:35:19,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:35:21,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:35:21,070 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-06-13 07:35:21,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:35:21 BoogieIcfgContainer [2021-06-13 07:35:21,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:35:21,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:35:21,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:35:21,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:35:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:35:19" (1/3) ... [2021-06-13 07:35:21,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:35:21, skipping insertion in model container [2021-06-13 07:35:21,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:35:19" (2/3) ... [2021-06-13 07:35:21,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6f37db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:35:21, skipping insertion in model container [2021-06-13 07:35:21,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:35:21" (3/3) ... [2021-06-13 07:35:21,076 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_rmo.opt.i [2021-06-13 07:35:21,081 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:35:21,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-13 07:35:21,082 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:35:21,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,102 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,103 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,104 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,105 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,106 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,107 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,108 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,111 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,111 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,114 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,114 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,115 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,116 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:35:21,117 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:35:21,132 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 07:35:21,144 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:35:21,145 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:35:21,145 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:35:21,145 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:35:21,145 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:35:21,145 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:35:21,145 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:35:21,145 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == P2Thread1of1ForFork0======== [2021-06-13 07:35:21,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,176 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2021-06-13 07:35:21,176 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-06-13 07:35:21,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 101 transitions, 211 flow [2021-06-13 07:35:21,190 INFO L129 PetriNetUnfolder]: 0/67 cut-off events. [2021-06-13 07:35:21,190 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:21,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:21,191 INFO L430 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1699461236, now seen corresponding path program 1 times [2021-06-13 07:35:21,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:21,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094510178] [2021-06-13 07:35:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:21,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:21,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:21,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:21,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094510178] [2021-06-13 07:35:21,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094510178] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:21,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:21,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 07:35:21,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582604233] [2021-06-13 07:35:21,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 07:35:21,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:21,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 07:35:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 07:35:21,408 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 104 [2021-06-13 07:35:21,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-06-13 07:35:21,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:21,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 104 [2021-06-13 07:35:21,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:21,460 INFO L129 PetriNetUnfolder]: 16/213 cut-off events. [2021-06-13 07:35:21,460 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 657 event pairs, 6 based on Foata normal form. 9/211 useless extension candidates. Maximal degree in co-relation 212. Up to 27 conditions per place. [2021-06-13 07:35:21,462 INFO L132 encePairwiseOnDemand]: 99/104 looper letters, 0 selfloop transitions, 0 changer transitions 100/100 dead transitions. [2021-06-13 07:35:21,462 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 227 flow [2021-06-13 07:35:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 07:35:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 07:35:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-06-13 07:35:21,470 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-06-13 07:35:21,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-06-13 07:35:21,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-06-13 07:35:21,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:21,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-06-13 07:35:21,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2021-06-13 07:35:21,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2021-06-13 07:35:21,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 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) [2021-06-13 07:35:21,480 INFO L185 Difference]: Start difference. First operand has 109 places, 101 transitions, 211 flow. Second operand 3 states and 296 transitions. [2021-06-13 07:35:21,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 227 flow [2021-06-13 07:35:21,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 100 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:35:21,483 INFO L241 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2021-06-13 07:35:21,485 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2021-06-13 07:35:21,485 INFO L335 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2021-06-13 07:35:21,485 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2021-06-13 07:35:21,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-06-13 07:35:21,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:35:21,486 INFO L301 ceAbstractionStarter]: Result for error location P2Thread1of1ForFork0 was SAFE (1/3) [2021-06-13 07:35:21,487 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 07:35:21,488 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:35:21,488 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:35:21,488 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:35:21,488 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:35:21,488 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:35:21,488 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:35:21,488 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:35:21,488 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == P2======== [2021-06-13 07:35:21,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,496 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2021-06-13 07:35:21,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-06-13 07:35:21,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 07:35:21,497 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 07:35:21,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,498 INFO L301 ceAbstractionStarter]: Result for error location P2 was SAFE (2/3) [2021-06-13 07:35:21,498 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:35:21,499 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:35:21,499 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:35:21,499 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:35:21,499 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:35:21,499 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:35:21,499 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:35:21,499 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:35:21,499 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:35:21,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,509 INFO L129 PetriNetUnfolder]: 2/101 cut-off events. [2021-06-13 07:35:21,509 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-06-13 07:35:21,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 104 transitions, 223 flow [2021-06-13 07:35:21,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 89 transitions, 187 flow [2021-06-13 07:35:21,516 INFO L129 PetriNetUnfolder]: 1/88 cut-off events. [2021-06-13 07:35:21,516 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,516 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:21,517 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:21,517 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1498850709, now seen corresponding path program 1 times [2021-06-13 07:35:21,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:21,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2352139] [2021-06-13 07:35:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:21,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:21,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:21,618 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:21,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:21,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:21,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:21,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:21,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:21,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2352139] [2021-06-13 07:35:21,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2352139] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:21,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:21,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:35:21,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516611652] [2021-06-13 07:35:21,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:35:21,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:21,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:35:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:35:21,651 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 104 [2021-06-13 07:35:21,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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) [2021-06-13 07:35:21,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:21,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 104 [2021-06-13 07:35:21,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:21,755 INFO L129 PetriNetUnfolder]: 24/169 cut-off events. [2021-06-13 07:35:21,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:35:21,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 169 events. 24/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 466 event pairs, 5 based on Foata normal form. 6/171 useless extension candidates. Maximal degree in co-relation 193. Up to 31 conditions per place. [2021-06-13 07:35:21,758 INFO L132 encePairwiseOnDemand]: 96/104 looper letters, 8 selfloop transitions, 3 changer transitions 19/109 dead transitions. [2021-06-13 07:35:21,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 287 flow [2021-06-13 07:35:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:35:21,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:35:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 853 transitions. [2021-06-13 07:35:21,763 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9113247863247863 [2021-06-13 07:35:21,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 853 transitions. [2021-06-13 07:35:21,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 853 transitions. [2021-06-13 07:35:21,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:21,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 853 transitions. [2021-06-13 07:35:21,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.77777777777777) internal successors, (853), 9 states have internal predecessors, (853), 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) [2021-06-13 07:35:21,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:21,770 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:21,770 INFO L185 Difference]: Start difference. First operand has 98 places, 89 transitions, 187 flow. Second operand 9 states and 853 transitions. [2021-06-13 07:35:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 287 flow [2021-06-13 07:35:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 109 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:35:21,773 INFO L241 Difference]: Finished difference. Result has 110 places, 90 transitions, 225 flow [2021-06-13 07:35:21,774 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2021-06-13 07:35:21,774 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 12 predicate places. [2021-06-13 07:35:21,774 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 225 flow [2021-06-13 07:35:21,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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) [2021-06-13 07:35:21,774 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:21,774 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:21,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:35:21,775 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash -2143243498, now seen corresponding path program 1 times [2021-06-13 07:35:21,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:21,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496846254] [2021-06-13 07:35:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:21,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:21,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:21,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:21,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:21,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:21,954 INFO L142 QuantifierPusher]: treesize reduction 26, result has 56.7 percent of original size [2021-06-13 07:35:21,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-13 07:35:21,981 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:21,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:21,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:21,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:22,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:22,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:22,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496846254] [2021-06-13 07:35:22,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496846254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:22,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:22,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:35:22,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538173665] [2021-06-13 07:35:22,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:35:22,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:22,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:35:22,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:35:22,015 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 104 [2021-06-13 07:35:22,016 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 225 flow. Second operand has 10 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 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) [2021-06-13 07:35:22,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:22,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 104 [2021-06-13 07:35:22,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:22,319 INFO L129 PetriNetUnfolder]: 245/595 cut-off events. [2021-06-13 07:35:22,319 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2021-06-13 07:35:22,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 595 events. 245/595 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3087 event pairs, 103 based on Foata normal form. 14/568 useless extension candidates. Maximal degree in co-relation 1356. Up to 264 conditions per place. [2021-06-13 07:35:22,323 INFO L132 encePairwiseOnDemand]: 91/104 looper letters, 13 selfloop transitions, 10 changer transitions 37/134 dead transitions. [2021-06-13 07:35:22,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 134 transitions, 461 flow [2021-06-13 07:35:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 07:35:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 07:35:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1327 transitions. [2021-06-13 07:35:22,326 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8506410256410256 [2021-06-13 07:35:22,326 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1327 transitions. [2021-06-13 07:35:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1327 transitions. [2021-06-13 07:35:22,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:22,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1327 transitions. [2021-06-13 07:35:22,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.46666666666667) internal successors, (1327), 15 states have internal predecessors, (1327), 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) [2021-06-13 07:35:22,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2021-06-13 07:35:22,331 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2021-06-13 07:35:22,331 INFO L185 Difference]: Start difference. First operand has 110 places, 90 transitions, 225 flow. Second operand 15 states and 1327 transitions. [2021-06-13 07:35:22,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 134 transitions, 461 flow [2021-06-13 07:35:22,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 134 transitions, 440 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-13 07:35:22,335 INFO L241 Difference]: Finished difference. Result has 125 places, 96 transitions, 310 flow [2021-06-13 07:35:22,336 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=310, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2021-06-13 07:35:22,336 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2021-06-13 07:35:22,336 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 310 flow [2021-06-13 07:35:22,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 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) [2021-06-13 07:35:22,337 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:22,337 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:22,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:35:22,337 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:22,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1973542411, now seen corresponding path program 1 times [2021-06-13 07:35:22,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:22,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882614453] [2021-06-13 07:35:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:22,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:22,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:22,417 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:22,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:22,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:22,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:22,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882614453] [2021-06-13 07:35:22,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882614453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:22,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:22,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:35:22,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400555412] [2021-06-13 07:35:22,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:35:22,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:35:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:35:22,453 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 104 [2021-06-13 07:35:22,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2021-06-13 07:35:22,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:22,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 104 [2021-06-13 07:35:22,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:22,583 INFO L129 PetriNetUnfolder]: 78/410 cut-off events. [2021-06-13 07:35:22,583 INFO L130 PetriNetUnfolder]: For 1075/1152 co-relation queries the response was YES. [2021-06-13 07:35:22,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1258 conditions, 410 events. 78/410 cut-off events. For 1075/1152 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2271 event pairs, 23 based on Foata normal form. 12/402 useless extension candidates. Maximal degree in co-relation 1192. Up to 78 conditions per place. [2021-06-13 07:35:22,586 INFO L132 encePairwiseOnDemand]: 98/104 looper letters, 15 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2021-06-13 07:35:22,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 485 flow [2021-06-13 07:35:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:35:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:35:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 845 transitions. [2021-06-13 07:35:22,588 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2021-06-13 07:35:22,588 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 845 transitions. [2021-06-13 07:35:22,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 845 transitions. [2021-06-13 07:35:22,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:22,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 845 transitions. [2021-06-13 07:35:22,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.88888888888889) internal successors, (845), 9 states have internal predecessors, (845), 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) [2021-06-13 07:35:22,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:22,591 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:22,591 INFO L185 Difference]: Start difference. First operand has 125 places, 96 transitions, 310 flow. Second operand 9 states and 845 transitions. [2021-06-13 07:35:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 485 flow [2021-06-13 07:35:22,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 453 flow, removed 14 selfloop flow, removed 5 redundant places. [2021-06-13 07:35:22,599 INFO L241 Difference]: Finished difference. Result has 126 places, 105 transitions, 430 flow [2021-06-13 07:35:22,599 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=430, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2021-06-13 07:35:22,599 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 28 predicate places. [2021-06-13 07:35:22,599 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 430 flow [2021-06-13 07:35:22,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2021-06-13 07:35:22,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:22,600 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:22,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:35:22,600 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:22,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1258977592, now seen corresponding path program 1 times [2021-06-13 07:35:22,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:22,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150501301] [2021-06-13 07:35:22,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:22,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:22,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:22,712 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:22,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:22,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:22,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:22,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:22,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:22,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150501301] [2021-06-13 07:35:22,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150501301] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:22,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:22,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:35:22,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961984441] [2021-06-13 07:35:22,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:35:22,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:35:22,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:35:22,738 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 104 [2021-06-13 07:35:22,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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) [2021-06-13 07:35:22,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:22,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 104 [2021-06-13 07:35:22,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:22,981 INFO L129 PetriNetUnfolder]: 432/1252 cut-off events. [2021-06-13 07:35:22,981 INFO L130 PetriNetUnfolder]: For 4900/5084 co-relation queries the response was YES. [2021-06-13 07:35:22,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1252 events. 432/1252 cut-off events. For 4900/5084 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9636 event pairs, 131 based on Foata normal form. 24/1216 useless extension candidates. Maximal degree in co-relation 4079. Up to 361 conditions per place. [2021-06-13 07:35:22,991 INFO L132 encePairwiseOnDemand]: 97/104 looper letters, 15 selfloop transitions, 3 changer transitions 30/137 dead transitions. [2021-06-13 07:35:22,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 137 transitions, 744 flow [2021-06-13 07:35:22,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:35:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:35:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 851 transitions. [2021-06-13 07:35:22,993 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9091880341880342 [2021-06-13 07:35:22,994 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 851 transitions. [2021-06-13 07:35:22,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 851 transitions. [2021-06-13 07:35:22,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:22,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 851 transitions. [2021-06-13 07:35:22,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.55555555555556) internal successors, (851), 9 states have internal predecessors, (851), 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) [2021-06-13 07:35:22,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:22,997 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:22,997 INFO L185 Difference]: Start difference. First operand has 126 places, 105 transitions, 430 flow. Second operand 9 states and 851 transitions. [2021-06-13 07:35:22,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 137 transitions, 744 flow [2021-06-13 07:35:23,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 137 transitions, 661 flow, removed 40 selfloop flow, removed 1 redundant places. [2021-06-13 07:35:23,011 INFO L241 Difference]: Finished difference. Result has 140 places, 107 transitions, 450 flow [2021-06-13 07:35:23,011 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=140, PETRI_TRANSITIONS=107} [2021-06-13 07:35:23,011 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 42 predicate places. [2021-06-13 07:35:23,011 INFO L482 AbstractCegarLoop]: Abstraction has has 140 places, 107 transitions, 450 flow [2021-06-13 07:35:23,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.16666666666667) internal successors, (553), 6 states have internal predecessors, (553), 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) [2021-06-13 07:35:23,011 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:23,012 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:23,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:35:23,012 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash -119587808, now seen corresponding path program 1 times [2021-06-13 07:35:23,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:23,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532041137] [2021-06-13 07:35:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:23,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:23,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:23,056 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:23,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:23,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:23,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:23,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:23,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:23,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532041137] [2021-06-13 07:35:23,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532041137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:23,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:23,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:35:23,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554440157] [2021-06-13 07:35:23,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:35:23,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:23,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:35:23,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:35:23,085 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 104 [2021-06-13 07:35:23,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 107 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2021-06-13 07:35:23,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:23,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 104 [2021-06-13 07:35:23,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:23,304 INFO L129 PetriNetUnfolder]: 270/1194 cut-off events. [2021-06-13 07:35:23,305 INFO L130 PetriNetUnfolder]: For 7118/7428 co-relation queries the response was YES. [2021-06-13 07:35:23,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 1194 events. 270/1194 cut-off events. For 7118/7428 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10529 event pairs, 94 based on Foata normal form. 25/1162 useless extension candidates. Maximal degree in co-relation 4606. Up to 212 conditions per place. [2021-06-13 07:35:23,315 INFO L132 encePairwiseOnDemand]: 98/104 looper letters, 24 selfloop transitions, 11 changer transitions 8/132 dead transitions. [2021-06-13 07:35:23,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 132 transitions, 824 flow [2021-06-13 07:35:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:35:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:35:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 845 transitions. [2021-06-13 07:35:23,317 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2021-06-13 07:35:23,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 845 transitions. [2021-06-13 07:35:23,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 845 transitions. [2021-06-13 07:35:23,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:23,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 845 transitions. [2021-06-13 07:35:23,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.88888888888889) internal successors, (845), 9 states have internal predecessors, (845), 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) [2021-06-13 07:35:23,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:23,320 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 104.0) internal successors, (1040), 10 states have internal predecessors, (1040), 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) [2021-06-13 07:35:23,321 INFO L185 Difference]: Start difference. First operand has 140 places, 107 transitions, 450 flow. Second operand 9 states and 845 transitions. [2021-06-13 07:35:23,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 132 transitions, 824 flow [2021-06-13 07:35:23,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 765 flow, removed 28 selfloop flow, removed 4 redundant places. [2021-06-13 07:35:23,369 INFO L241 Difference]: Finished difference. Result has 145 places, 115 transitions, 588 flow [2021-06-13 07:35:23,369 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=588, PETRI_PLACES=145, PETRI_TRANSITIONS=115} [2021-06-13 07:35:23,370 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 47 predicate places. [2021-06-13 07:35:23,370 INFO L482 AbstractCegarLoop]: Abstraction has has 145 places, 115 transitions, 588 flow [2021-06-13 07:35:23,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 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) [2021-06-13 07:35:23,370 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:23,370 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:23,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:35:23,370 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1796638565, now seen corresponding path program 1 times [2021-06-13 07:35:23,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:23,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162046813] [2021-06-13 07:35:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:23,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:23,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:23,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:23,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:23,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:23,450 INFO L142 QuantifierPusher]: treesize reduction 26, result has 54.4 percent of original size [2021-06-13 07:35:23,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-13 07:35:23,467 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:23,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:23,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:23,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:23,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:23,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:23,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:23,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162046813] [2021-06-13 07:35:23,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162046813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:23,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:23,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:35:23,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788135596] [2021-06-13 07:35:23,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:35:23,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:23,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:35:23,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:35:23,500 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 104 [2021-06-13 07:35:23,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 115 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-06-13 07:35:23,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:23,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 104 [2021-06-13 07:35:23,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:23,987 INFO L129 PetriNetUnfolder]: 745/1821 cut-off events. [2021-06-13 07:35:23,987 INFO L130 PetriNetUnfolder]: For 15219/15589 co-relation queries the response was YES. [2021-06-13 07:35:23,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8348 conditions, 1821 events. 745/1821 cut-off events. For 15219/15589 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 13438 event pairs, 269 based on Foata normal form. 30/1791 useless extension candidates. Maximal degree in co-relation 8264. Up to 960 conditions per place. [2021-06-13 07:35:24,002 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 22 selfloop transitions, 8 changer transitions 52/158 dead transitions. [2021-06-13 07:35:24,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 158 transitions, 1232 flow [2021-06-13 07:35:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-13 07:35:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-06-13 07:35:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1321 transitions. [2021-06-13 07:35:24,005 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8467948717948718 [2021-06-13 07:35:24,005 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1321 transitions. [2021-06-13 07:35:24,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1321 transitions. [2021-06-13 07:35:24,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:24,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1321 transitions. [2021-06-13 07:35:24,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 88.06666666666666) internal successors, (1321), 15 states have internal predecessors, (1321), 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) [2021-06-13 07:35:24,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2021-06-13 07:35:24,010 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 104.0) internal successors, (1664), 16 states have internal predecessors, (1664), 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) [2021-06-13 07:35:24,010 INFO L185 Difference]: Start difference. First operand has 145 places, 115 transitions, 588 flow. Second operand 15 states and 1321 transitions. [2021-06-13 07:35:24,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 158 transitions, 1232 flow [2021-06-13 07:35:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 158 transitions, 1143 flow, removed 43 selfloop flow, removed 4 redundant places. [2021-06-13 07:35:24,038 INFO L241 Difference]: Finished difference. Result has 161 places, 99 transitions, 411 flow [2021-06-13 07:35:24,039 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=411, PETRI_PLACES=161, PETRI_TRANSITIONS=99} [2021-06-13 07:35:24,039 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 63 predicate places. [2021-06-13 07:35:24,039 INFO L482 AbstractCegarLoop]: Abstraction has has 161 places, 99 transitions, 411 flow [2021-06-13 07:35:24,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-06-13 07:35:24,039 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:24,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:24,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:35:24,039 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:24,040 INFO L82 PathProgramCache]: Analyzing trace with hash 185847640, now seen corresponding path program 1 times [2021-06-13 07:35:24,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:24,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774652822] [2021-06-13 07:35:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:24,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:24,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:24,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:24,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:24,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-13 07:35:24,166 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-06-13 07:35:24,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 07:35:24,184 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-06-13 07:35:24,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-06-13 07:35:24,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:24,219 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:24,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:24,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:24,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:24,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:24,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:24,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774652822] [2021-06-13 07:35:24,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774652822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:24,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:24,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-13 07:35:24,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994646734] [2021-06-13 07:35:24,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-13 07:35:24,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:24,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-13 07:35:24,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-13 07:35:24,281 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 104 [2021-06-13 07:35:24,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 99 transitions, 411 flow. Second operand has 13 states, 13 states have (on average 83.15384615384616) internal successors, (1081), 13 states have internal predecessors, (1081), 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) [2021-06-13 07:35:24,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:24,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 104 [2021-06-13 07:35:24,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:24,592 INFO L129 PetriNetUnfolder]: 362/970 cut-off events. [2021-06-13 07:35:24,592 INFO L130 PetriNetUnfolder]: For 11309/11463 co-relation queries the response was YES. [2021-06-13 07:35:24,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 970 events. 362/970 cut-off events. For 11309/11463 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5900 event pairs, 165 based on Foata normal form. 17/947 useless extension candidates. Maximal degree in co-relation 4869. Up to 494 conditions per place. [2021-06-13 07:35:24,601 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 18 selfloop transitions, 9 changer transitions 13/114 dead transitions. [2021-06-13 07:35:24,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 114 transitions, 673 flow [2021-06-13 07:35:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 07:35:24,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-13 07:35:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1185 transitions. [2021-06-13 07:35:24,604 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8138736263736264 [2021-06-13 07:35:24,604 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1185 transitions. [2021-06-13 07:35:24,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1185 transitions. [2021-06-13 07:35:24,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:24,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1185 transitions. [2021-06-13 07:35:24,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 84.64285714285714) internal successors, (1185), 14 states have internal predecessors, (1185), 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) [2021-06-13 07:35:24,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 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) [2021-06-13 07:35:24,608 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 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) [2021-06-13 07:35:24,608 INFO L185 Difference]: Start difference. First operand has 161 places, 99 transitions, 411 flow. Second operand 14 states and 1185 transitions. [2021-06-13 07:35:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 114 transitions, 673 flow [2021-06-13 07:35:24,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 114 transitions, 572 flow, removed 45 selfloop flow, removed 18 redundant places. [2021-06-13 07:35:24,619 INFO L241 Difference]: Finished difference. Result has 145 places, 99 transitions, 394 flow [2021-06-13 07:35:24,620 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=394, PETRI_PLACES=145, PETRI_TRANSITIONS=99} [2021-06-13 07:35:24,620 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 47 predicate places. [2021-06-13 07:35:24,620 INFO L482 AbstractCegarLoop]: Abstraction has has 145 places, 99 transitions, 394 flow [2021-06-13 07:35:24,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 83.15384615384616) internal successors, (1081), 13 states have internal predecessors, (1081), 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) [2021-06-13 07:35:24,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:24,621 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:24,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:35:24,621 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1475104505, now seen corresponding path program 1 times [2021-06-13 07:35:24,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:24,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348925494] [2021-06-13 07:35:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:24,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:24,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:24,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:24,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:24,677 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-06-13 07:35:24,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-06-13 07:35:24,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 65.4 percent of original size [2021-06-13 07:35:24,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-06-13 07:35:24,711 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:24,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:24,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:24,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:24,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:24,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:24,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:24,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348925494] [2021-06-13 07:35:24,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348925494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:24,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:24,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:35:24,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517918113] [2021-06-13 07:35:24,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:35:24,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:24,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:35:24,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:35:24,739 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 104 [2021-06-13 07:35:24,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 99 transitions, 394 flow. Second operand has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-06-13 07:35:24,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:24,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 104 [2021-06-13 07:35:24,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:24,998 INFO L129 PetriNetUnfolder]: 416/1212 cut-off events. [2021-06-13 07:35:24,999 INFO L130 PetriNetUnfolder]: For 9216/9353 co-relation queries the response was YES. [2021-06-13 07:35:25,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5399 conditions, 1212 events. 416/1212 cut-off events. For 9216/9353 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8663 event pairs, 175 based on Foata normal form. 53/1196 useless extension candidates. Maximal degree in co-relation 5310. Up to 370 conditions per place. [2021-06-13 07:35:25,040 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 15 selfloop transitions, 10 changer transitions 23/124 dead transitions. [2021-06-13 07:35:25,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 124 transitions, 708 flow [2021-06-13 07:35:25,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:35:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:35:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1137 transitions. [2021-06-13 07:35:25,043 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8409763313609467 [2021-06-13 07:35:25,043 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1137 transitions. [2021-06-13 07:35:25,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1137 transitions. [2021-06-13 07:35:25,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:25,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1137 transitions. [2021-06-13 07:35:25,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.46153846153847) internal successors, (1137), 13 states have internal predecessors, (1137), 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) [2021-06-13 07:35:25,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:25,047 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:25,047 INFO L185 Difference]: Start difference. First operand has 145 places, 99 transitions, 394 flow. Second operand 13 states and 1137 transitions. [2021-06-13 07:35:25,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 124 transitions, 708 flow [2021-06-13 07:35:25,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 124 transitions, 645 flow, removed 24 selfloop flow, removed 15 redundant places. [2021-06-13 07:35:25,058 INFO L241 Difference]: Finished difference. Result has 143 places, 100 transitions, 411 flow [2021-06-13 07:35:25,059 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=411, PETRI_PLACES=143, PETRI_TRANSITIONS=100} [2021-06-13 07:35:25,059 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 45 predicate places. [2021-06-13 07:35:25,059 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 100 transitions, 411 flow [2021-06-13 07:35:25,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 85.2) internal successors, (852), 10 states have internal predecessors, (852), 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) [2021-06-13 07:35:25,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:25,059 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:25,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:35:25,059 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:25,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:25,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1044814445, now seen corresponding path program 1 times [2021-06-13 07:35:25,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:25,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149146880] [2021-06-13 07:35:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:25,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:25,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:25,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:25,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:25,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:25,156 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-06-13 07:35:25,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 07:35:25,193 INFO L142 QuantifierPusher]: treesize reduction 47, result has 64.1 percent of original size [2021-06-13 07:35:25,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-06-13 07:35:25,222 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:25,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:25,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:25,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:25,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:25,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:25,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149146880] [2021-06-13 07:35:25,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149146880] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:25,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:25,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-13 07:35:25,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161273151] [2021-06-13 07:35:25,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 07:35:25,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:25,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 07:35:25,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-13 07:35:25,268 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 104 [2021-06-13 07:35:25,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 100 transitions, 411 flow. Second operand has 11 states, 11 states have (on average 85.18181818181819) internal successors, (937), 11 states have internal predecessors, (937), 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) [2021-06-13 07:35:25,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:25,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 104 [2021-06-13 07:35:25,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:25,571 INFO L129 PetriNetUnfolder]: 367/1095 cut-off events. [2021-06-13 07:35:25,571 INFO L130 PetriNetUnfolder]: For 10240/10371 co-relation queries the response was YES. [2021-06-13 07:35:25,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 1095 events. 367/1095 cut-off events. For 10240/10371 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7575 event pairs, 134 based on Foata normal form. 41/1090 useless extension candidates. Maximal degree in co-relation 5344. Up to 368 conditions per place. [2021-06-13 07:35:25,582 INFO L132 encePairwiseOnDemand]: 93/104 looper letters, 20 selfloop transitions, 9 changer transitions 19/124 dead transitions. [2021-06-13 07:35:25,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 124 transitions, 795 flow [2021-06-13 07:35:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:35:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:35:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1136 transitions. [2021-06-13 07:35:25,584 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8402366863905325 [2021-06-13 07:35:25,584 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1136 transitions. [2021-06-13 07:35:25,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1136 transitions. [2021-06-13 07:35:25,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:25,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1136 transitions. [2021-06-13 07:35:25,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.38461538461539) internal successors, (1136), 13 states have internal predecessors, (1136), 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) [2021-06-13 07:35:25,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:25,588 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:25,588 INFO L185 Difference]: Start difference. First operand has 143 places, 100 transitions, 411 flow. Second operand 13 states and 1136 transitions. [2021-06-13 07:35:25,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 124 transitions, 795 flow [2021-06-13 07:35:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 124 transitions, 760 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-06-13 07:35:25,598 INFO L241 Difference]: Finished difference. Result has 148 places, 102 transitions, 464 flow [2021-06-13 07:35:25,598 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=464, PETRI_PLACES=148, PETRI_TRANSITIONS=102} [2021-06-13 07:35:25,598 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 50 predicate places. [2021-06-13 07:35:25,598 INFO L482 AbstractCegarLoop]: Abstraction has has 148 places, 102 transitions, 464 flow [2021-06-13 07:35:25,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 85.18181818181819) internal successors, (937), 11 states have internal predecessors, (937), 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) [2021-06-13 07:35:25,599 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:25,599 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:25,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:35:25,599 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:25,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:25,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1810914353, now seen corresponding path program 2 times [2021-06-13 07:35:25,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:25,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407860638] [2021-06-13 07:35:25,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:25,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:25,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:25,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:25,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:25,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:25,663 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-06-13 07:35:25,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-06-13 07:35:25,681 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:25,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:25,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:25,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:25,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:25,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:25,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:25,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407860638] [2021-06-13 07:35:25,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407860638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:25,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:25,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-13 07:35:25,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703021886] [2021-06-13 07:35:25,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-13 07:35:25,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:25,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-13 07:35:25,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-06-13 07:35:25,708 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 104 [2021-06-13 07:35:25,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 102 transitions, 464 flow. Second operand has 10 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 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) [2021-06-13 07:35:25,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:25,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 104 [2021-06-13 07:35:25,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:26,029 INFO L129 PetriNetUnfolder]: 281/1008 cut-off events. [2021-06-13 07:35:26,029 INFO L130 PetriNetUnfolder]: For 13235/13385 co-relation queries the response was YES. [2021-06-13 07:35:26,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5502 conditions, 1008 events. 281/1008 cut-off events. For 13235/13385 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7515 event pairs, 75 based on Foata normal form. 37/1004 useless extension candidates. Maximal degree in co-relation 5412. Up to 260 conditions per place. [2021-06-13 07:35:26,039 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 25 selfloop transitions, 10 changer transitions 19/129 dead transitions. [2021-06-13 07:35:26,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 129 transitions, 1028 flow [2021-06-13 07:35:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-13 07:35:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-13 07:35:26,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1043 transitions. [2021-06-13 07:35:26,041 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8357371794871795 [2021-06-13 07:35:26,041 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1043 transitions. [2021-06-13 07:35:26,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1043 transitions. [2021-06-13 07:35:26,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:26,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1043 transitions. [2021-06-13 07:35:26,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.91666666666667) internal successors, (1043), 12 states have internal predecessors, (1043), 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) [2021-06-13 07:35:26,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 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) [2021-06-13 07:35:26,044 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 104.0) internal successors, (1352), 13 states have internal predecessors, (1352), 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) [2021-06-13 07:35:26,044 INFO L185 Difference]: Start difference. First operand has 148 places, 102 transitions, 464 flow. Second operand 12 states and 1043 transitions. [2021-06-13 07:35:26,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 129 transitions, 1028 flow [2021-06-13 07:35:26,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 129 transitions, 904 flow, removed 55 selfloop flow, removed 11 redundant places. [2021-06-13 07:35:26,057 INFO L241 Difference]: Finished difference. Result has 149 places, 104 transitions, 503 flow [2021-06-13 07:35:26,057 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=149, PETRI_TRANSITIONS=104} [2021-06-13 07:35:26,058 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 51 predicate places. [2021-06-13 07:35:26,058 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 104 transitions, 503 flow [2021-06-13 07:35:26,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 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) [2021-06-13 07:35:26,058 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:26,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:26,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 07:35:26,058 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:26,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1868804790, now seen corresponding path program 1 times [2021-06-13 07:35:26,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:26,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266364729] [2021-06-13 07:35:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:26,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:26,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:26,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:26,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:26,122 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-06-13 07:35:26,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-06-13 07:35:26,129 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-06-13 07:35:26,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 07:35:26,150 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.9 percent of original size [2021-06-13 07:35:26,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-06-13 07:35:26,176 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-06-13 07:35:26,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-06-13 07:35:26,197 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:26,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:26,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:26,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:26,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:26,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:26,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266364729] [2021-06-13 07:35:26,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266364729] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:26,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:26,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-13 07:35:26,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43986621] [2021-06-13 07:35:26,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-13 07:35:26,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-13 07:35:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-13 07:35:26,226 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 104 [2021-06-13 07:35:26,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 104 transitions, 503 flow. Second operand has 11 states, 11 states have (on average 83.45454545454545) internal successors, (918), 11 states have internal predecessors, (918), 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) [2021-06-13 07:35:26,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:26,227 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 104 [2021-06-13 07:35:26,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:26,476 INFO L129 PetriNetUnfolder]: 204/711 cut-off events. [2021-06-13 07:35:26,476 INFO L130 PetriNetUnfolder]: For 11078/11215 co-relation queries the response was YES. [2021-06-13 07:35:26,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 711 events. 204/711 cut-off events. For 11078/11215 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4378 event pairs, 90 based on Foata normal form. 20/691 useless extension candidates. Maximal degree in co-relation 4026. Up to 296 conditions per place. [2021-06-13 07:35:26,485 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 25 selfloop transitions, 13 changer transitions 7/119 dead transitions. [2021-06-13 07:35:26,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 119 transitions, 800 flow [2021-06-13 07:35:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:35:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:35:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 854 transitions. [2021-06-13 07:35:26,487 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8211538461538461 [2021-06-13 07:35:26,487 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 854 transitions. [2021-06-13 07:35:26,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 854 transitions. [2021-06-13 07:35:26,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:26,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 854 transitions. [2021-06-13 07:35:26,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.4) internal successors, (854), 10 states have internal predecessors, (854), 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) [2021-06-13 07:35:26,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-06-13 07:35:26,490 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-06-13 07:35:26,490 INFO L185 Difference]: Start difference. First operand has 149 places, 104 transitions, 503 flow. Second operand 10 states and 854 transitions. [2021-06-13 07:35:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 119 transitions, 800 flow [2021-06-13 07:35:26,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 119 transitions, 706 flow, removed 43 selfloop flow, removed 12 redundant places. [2021-06-13 07:35:26,502 INFO L241 Difference]: Finished difference. Result has 145 places, 110 transitions, 548 flow [2021-06-13 07:35:26,503 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=548, PETRI_PLACES=145, PETRI_TRANSITIONS=110} [2021-06-13 07:35:26,503 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 47 predicate places. [2021-06-13 07:35:26,503 INFO L482 AbstractCegarLoop]: Abstraction has has 145 places, 110 transitions, 548 flow [2021-06-13 07:35:26,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 83.45454545454545) internal successors, (918), 11 states have internal predecessors, (918), 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) [2021-06-13 07:35:26,503 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:26,503 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:26,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 07:35:26,504 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:26,504 INFO L82 PathProgramCache]: Analyzing trace with hash 589218474, now seen corresponding path program 2 times [2021-06-13 07:35:26,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:26,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328832033] [2021-06-13 07:35:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:26,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:26,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:26,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:26,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:26,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:26,594 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-06-13 07:35:26,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-06-13 07:35:26,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-13 07:35:26,624 INFO L142 QuantifierPusher]: treesize reduction 155, result has 35.1 percent of original size [2021-06-13 07:35:26,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-06-13 07:35:26,646 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:26,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:26,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:26,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:26,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:26,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:26,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:26,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328832033] [2021-06-13 07:35:26,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328832033] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:26,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:26,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-13 07:35:26,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047195775] [2021-06-13 07:35:26,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 07:35:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:26,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 07:35:26,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-13 07:35:26,678 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 104 [2021-06-13 07:35:26,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 110 transitions, 548 flow. Second operand has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 12 states have internal predecessors, (1000), 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) [2021-06-13 07:35:26,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:26,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 104 [2021-06-13 07:35:26,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:26,998 INFO L129 PetriNetUnfolder]: 206/749 cut-off events. [2021-06-13 07:35:26,998 INFO L130 PetriNetUnfolder]: For 7534/7906 co-relation queries the response was YES. [2021-06-13 07:35:27,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3726 conditions, 749 events. 206/749 cut-off events. For 7534/7906 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4821 event pairs, 90 based on Foata normal form. 30/741 useless extension candidates. Maximal degree in co-relation 3638. Up to 298 conditions per place. [2021-06-13 07:35:27,005 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 26 selfloop transitions, 14 changer transitions 10/124 dead transitions. [2021-06-13 07:35:27,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 124 transitions, 842 flow [2021-06-13 07:35:27,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:35:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:35:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1104 transitions. [2021-06-13 07:35:27,007 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8165680473372781 [2021-06-13 07:35:27,007 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1104 transitions. [2021-06-13 07:35:27,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1104 transitions. [2021-06-13 07:35:27,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:27,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1104 transitions. [2021-06-13 07:35:27,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 84.92307692307692) internal successors, (1104), 13 states have internal predecessors, (1104), 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) [2021-06-13 07:35:27,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:27,011 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:27,011 INFO L185 Difference]: Start difference. First operand has 145 places, 110 transitions, 548 flow. Second operand 13 states and 1104 transitions. [2021-06-13 07:35:27,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 124 transitions, 842 flow [2021-06-13 07:35:27,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 124 transitions, 793 flow, removed 19 selfloop flow, removed 6 redundant places. [2021-06-13 07:35:27,021 INFO L241 Difference]: Finished difference. Result has 155 places, 112 transitions, 596 flow [2021-06-13 07:35:27,021 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=596, PETRI_PLACES=155, PETRI_TRANSITIONS=112} [2021-06-13 07:35:27,021 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 57 predicate places. [2021-06-13 07:35:27,021 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 112 transitions, 596 flow [2021-06-13 07:35:27,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 12 states have internal predecessors, (1000), 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) [2021-06-13 07:35:27,022 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:27,022 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:27,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 07:35:27,022 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:27,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:27,022 INFO L82 PathProgramCache]: Analyzing trace with hash 332997642, now seen corresponding path program 3 times [2021-06-13 07:35:27,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:27,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206795798] [2021-06-13 07:35:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:27,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:27,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:27,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:27,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:27,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:35:27,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-13 07:35:27,099 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.0 percent of original size [2021-06-13 07:35:27,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-13 07:35:27,122 INFO L142 QuantifierPusher]: treesize reduction 21, result has 76.9 percent of original size [2021-06-13 07:35:27,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-06-13 07:35:27,148 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-06-13 07:35:27,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-06-13 07:35:27,181 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:27,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:27,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:27,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:27,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:27,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:27,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206795798] [2021-06-13 07:35:27,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206795798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:27,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:27,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-06-13 07:35:27,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571598231] [2021-06-13 07:35:27,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-13 07:35:27,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:27,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-13 07:35:27,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-13 07:35:27,221 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 104 [2021-06-13 07:35:27,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 112 transitions, 596 flow. Second operand has 13 states, 13 states have (on average 82.3076923076923) internal successors, (1070), 13 states have internal predecessors, (1070), 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) [2021-06-13 07:35:27,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:27,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 104 [2021-06-13 07:35:27,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:27,566 INFO L129 PetriNetUnfolder]: 207/758 cut-off events. [2021-06-13 07:35:27,566 INFO L130 PetriNetUnfolder]: For 10286/10534 co-relation queries the response was YES. [2021-06-13 07:35:27,570 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 758 events. 207/758 cut-off events. For 10286/10534 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4893 event pairs, 92 based on Foata normal form. 30/749 useless extension candidates. Maximal degree in co-relation 3999. Up to 297 conditions per place. [2021-06-13 07:35:27,573 INFO L132 encePairwiseOnDemand]: 92/104 looper letters, 25 selfloop transitions, 17 changer transitions 10/125 dead transitions. [2021-06-13 07:35:27,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 125 transitions, 934 flow [2021-06-13 07:35:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-13 07:35:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-06-13 07:35:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1172 transitions. [2021-06-13 07:35:27,575 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.804945054945055 [2021-06-13 07:35:27,575 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1172 transitions. [2021-06-13 07:35:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1172 transitions. [2021-06-13 07:35:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1172 transitions. [2021-06-13 07:35:27,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 83.71428571428571) internal successors, (1172), 14 states have internal predecessors, (1172), 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) [2021-06-13 07:35:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 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) [2021-06-13 07:35:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 104.0) internal successors, (1560), 15 states have internal predecessors, (1560), 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) [2021-06-13 07:35:27,579 INFO L185 Difference]: Start difference. First operand has 155 places, 112 transitions, 596 flow. Second operand 14 states and 1172 transitions. [2021-06-13 07:35:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 125 transitions, 934 flow [2021-06-13 07:35:27,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 125 transitions, 833 flow, removed 39 selfloop flow, removed 11 redundant places. [2021-06-13 07:35:27,590 INFO L241 Difference]: Finished difference. Result has 158 places, 114 transitions, 637 flow [2021-06-13 07:35:27,591 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=637, PETRI_PLACES=158, PETRI_TRANSITIONS=114} [2021-06-13 07:35:27,591 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 60 predicate places. [2021-06-13 07:35:27,591 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 114 transitions, 637 flow [2021-06-13 07:35:27,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 82.3076923076923) internal successors, (1070), 13 states have internal predecessors, (1070), 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) [2021-06-13 07:35:27,591 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:27,591 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:27,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 07:35:27,592 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:27,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:27,592 INFO L82 PathProgramCache]: Analyzing trace with hash -233812086, now seen corresponding path program 4 times [2021-06-13 07:35:27,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:27,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546106378] [2021-06-13 07:35:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:27,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:27,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:27,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:27,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-13 07:35:27,652 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-06-13 07:35:27,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-06-13 07:35:27,668 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.3 percent of original size [2021-06-13 07:35:27,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-06-13 07:35:27,689 INFO L142 QuantifierPusher]: treesize reduction 36, result has 67.3 percent of original size [2021-06-13 07:35:27,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-06-13 07:35:27,711 INFO L142 QuantifierPusher]: treesize reduction 26, result has 56.7 percent of original size [2021-06-13 07:35:27,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-06-13 07:35:27,728 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:35:27,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:35:27,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:27,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:27,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:27,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:27,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:27,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546106378] [2021-06-13 07:35:27,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546106378] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:27,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:27,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-06-13 07:35:27,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240575414] [2021-06-13 07:35:27,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-13 07:35:27,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:27,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-13 07:35:27,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-13 07:35:27,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 104 [2021-06-13 07:35:27,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 114 transitions, 637 flow. Second operand has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 12 states have internal predecessors, (1000), 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) [2021-06-13 07:35:27,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:27,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 104 [2021-06-13 07:35:27,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:28,059 INFO L129 PetriNetUnfolder]: 156/772 cut-off events. [2021-06-13 07:35:28,059 INFO L130 PetriNetUnfolder]: For 8037/8291 co-relation queries the response was YES. [2021-06-13 07:35:28,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 772 events. 156/772 cut-off events. For 8037/8291 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5628 event pairs, 34 based on Foata normal form. 27/766 useless extension candidates. Maximal degree in co-relation 3445. Up to 153 conditions per place. [2021-06-13 07:35:28,066 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 34 selfloop transitions, 12 changer transitions 10/130 dead transitions. [2021-06-13 07:35:28,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 130 transitions, 1001 flow [2021-06-13 07:35:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:35:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:35:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1105 transitions. [2021-06-13 07:35:28,067 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8173076923076923 [2021-06-13 07:35:28,068 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1105 transitions. [2021-06-13 07:35:28,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1105 transitions. [2021-06-13 07:35:28,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:28,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1105 transitions. [2021-06-13 07:35:28,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2021-06-13 07:35:28,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:28,070 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:28,071 INFO L185 Difference]: Start difference. First operand has 158 places, 114 transitions, 637 flow. Second operand 13 states and 1105 transitions. [2021-06-13 07:35:28,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 130 transitions, 1001 flow [2021-06-13 07:35:28,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 130 transitions, 865 flow, removed 55 selfloop flow, removed 12 redundant places. [2021-06-13 07:35:28,083 INFO L241 Difference]: Finished difference. Result has 159 places, 114 transitions, 604 flow [2021-06-13 07:35:28,084 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=159, PETRI_TRANSITIONS=114} [2021-06-13 07:35:28,084 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 61 predicate places. [2021-06-13 07:35:28,084 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 114 transitions, 604 flow [2021-06-13 07:35:28,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 83.33333333333333) internal successors, (1000), 12 states have internal predecessors, (1000), 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) [2021-06-13 07:35:28,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:28,084 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:28,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 07:35:28,084 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1320666536, now seen corresponding path program 1 times [2021-06-13 07:35:28,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:28,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548180746] [2021-06-13 07:35:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:28,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:28,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:28,122 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:35:28,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:35:28,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:28,140 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:35:28,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:28,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:28,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:28,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548180746] [2021-06-13 07:35:28,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548180746] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:28,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:28,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:35:28,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81132190] [2021-06-13 07:35:28,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:35:28,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:35:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:35:28,149 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 104 [2021-06-13 07:35:28,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 114 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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) [2021-06-13 07:35:28,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:28,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 104 [2021-06-13 07:35:28,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:28,503 INFO L129 PetriNetUnfolder]: 1305/2944 cut-off events. [2021-06-13 07:35:28,503 INFO L130 PetriNetUnfolder]: For 6265/6401 co-relation queries the response was YES. [2021-06-13 07:35:28,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7464 conditions, 2944 events. 1305/2944 cut-off events. For 6265/6401 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 26301 event pairs, 91 based on Foata normal form. 5/2521 useless extension candidates. Maximal degree in co-relation 7374. Up to 854 conditions per place. [2021-06-13 07:35:28,527 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 24 selfloop transitions, 17 changer transitions 2/144 dead transitions. [2021-06-13 07:35:28,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 144 transitions, 746 flow [2021-06-13 07:35:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:35:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:35:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 943 transitions. [2021-06-13 07:35:28,529 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9067307692307692 [2021-06-13 07:35:28,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 943 transitions. [2021-06-13 07:35:28,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 943 transitions. [2021-06-13 07:35:28,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:28,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 943 transitions. [2021-06-13 07:35:28,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 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) [2021-06-13 07:35:28,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-06-13 07:35:28,532 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 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) [2021-06-13 07:35:28,532 INFO L185 Difference]: Start difference. First operand has 159 places, 114 transitions, 604 flow. Second operand 10 states and 943 transitions. [2021-06-13 07:35:28,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 144 transitions, 746 flow [2021-06-13 07:35:28,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 144 transitions, 691 flow, removed 18 selfloop flow, removed 14 redundant places. [2021-06-13 07:35:28,544 INFO L241 Difference]: Finished difference. Result has 154 places, 127 transitions, 652 flow [2021-06-13 07:35:28,545 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=652, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2021-06-13 07:35:28,545 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 56 predicate places. [2021-06-13 07:35:28,545 INFO L482 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 652 flow [2021-06-13 07:35:28,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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) [2021-06-13 07:35:28,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:28,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:28,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 07:35:28,545 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:28,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:28,546 INFO L82 PathProgramCache]: Analyzing trace with hash 510028016, now seen corresponding path program 1 times [2021-06-13 07:35:28,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:28,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98624854] [2021-06-13 07:35:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:28,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:28,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:28,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:28,585 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:35:28,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:35:28,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:28,602 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:35:28,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:28,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:28,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:28,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:28,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98624854] [2021-06-13 07:35:28,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98624854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:28,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:28,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:35:28,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674585204] [2021-06-13 07:35:28,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:35:28,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:28,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:35:28,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:35:28,611 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 104 [2021-06-13 07:35:28,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2021-06-13 07:35:28,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:28,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 104 [2021-06-13 07:35:28,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:28,997 INFO L129 PetriNetUnfolder]: 1178/2814 cut-off events. [2021-06-13 07:35:28,997 INFO L130 PetriNetUnfolder]: For 8685/10593 co-relation queries the response was YES. [2021-06-13 07:35:29,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10535 conditions, 2814 events. 1178/2814 cut-off events. For 8685/10593 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 26886 event pairs, 16 based on Foata normal form. 369/2863 useless extension candidates. Maximal degree in co-relation 10449. Up to 1259 conditions per place. [2021-06-13 07:35:29,013 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 20 selfloop transitions, 32 changer transitions 11/155 dead transitions. [2021-06-13 07:35:29,014 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 939 flow [2021-06-13 07:35:29,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:35:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:35:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1227 transitions. [2021-06-13 07:35:29,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9075443786982249 [2021-06-13 07:35:29,015 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1227 transitions. [2021-06-13 07:35:29,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1227 transitions. [2021-06-13 07:35:29,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:29,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1227 transitions. [2021-06-13 07:35:29,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 94.38461538461539) internal successors, (1227), 13 states have internal predecessors, (1227), 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) [2021-06-13 07:35:29,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:29,020 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 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) [2021-06-13 07:35:29,020 INFO L185 Difference]: Start difference. First operand has 154 places, 127 transitions, 652 flow. Second operand 13 states and 1227 transitions. [2021-06-13 07:35:29,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 939 flow [2021-06-13 07:35:29,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 906 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-06-13 07:35:29,032 INFO L241 Difference]: Finished difference. Result has 162 places, 138 transitions, 791 flow [2021-06-13 07:35:29,032 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=791, PETRI_PLACES=162, PETRI_TRANSITIONS=138} [2021-06-13 07:35:29,032 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 64 predicate places. [2021-06-13 07:35:29,033 INFO L482 AbstractCegarLoop]: Abstraction has has 162 places, 138 transitions, 791 flow [2021-06-13 07:35:29,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 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) [2021-06-13 07:35:29,033 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:29,033 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:29,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-13 07:35:29,033 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:29,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1246118483, now seen corresponding path program 1 times [2021-06-13 07:35:29,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:29,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618964884] [2021-06-13 07:35:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:35:29,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:29,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:29,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:29,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:35:29,078 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:35:29,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:35:29,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:35:29,097 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:35:29,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:35:29,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:35:29,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:35:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:35:29,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:35:29,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618964884] [2021-06-13 07:35:29,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618964884] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:35:29,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:35:29,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:35:29,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385113904] [2021-06-13 07:35:29,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:35:29,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:35:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:35:29,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:35:29,108 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 104 [2021-06-13 07:35:29,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 138 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 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) [2021-06-13 07:35:29,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:35:29,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 104 [2021-06-13 07:35:29,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:35:29,639 INFO L129 PetriNetUnfolder]: 903/2496 cut-off events. [2021-06-13 07:35:29,639 INFO L130 PetriNetUnfolder]: For 12156/16555 co-relation queries the response was YES. [2021-06-13 07:35:29,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10861 conditions, 2496 events. 903/2496 cut-off events. For 12156/16555 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 25457 event pairs, 0 based on Foata normal form. 440/2620 useless extension candidates. Maximal degree in co-relation 10774. Up to 979 conditions per place. [2021-06-13 07:35:29,655 INFO L132 encePairwiseOnDemand]: 94/104 looper letters, 16 selfloop transitions, 32 changer transitions 36/164 dead transitions. [2021-06-13 07:35:29,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 1109 flow [2021-06-13 07:35:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:35:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:35:29,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1496 transitions. [2021-06-13 07:35:29,657 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8990384615384616 [2021-06-13 07:35:29,657 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1496 transitions. [2021-06-13 07:35:29,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1496 transitions. [2021-06-13 07:35:29,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:35:29,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1496 transitions. [2021-06-13 07:35:29,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 93.5) internal successors, (1496), 16 states have internal predecessors, (1496), 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) [2021-06-13 07:35:29,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 104.0) internal successors, (1768), 17 states have internal predecessors, (1768), 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) [2021-06-13 07:35:29,661 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 104.0) internal successors, (1768), 17 states have internal predecessors, (1768), 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) [2021-06-13 07:35:29,661 INFO L185 Difference]: Start difference. First operand has 162 places, 138 transitions, 791 flow. Second operand 16 states and 1496 transitions. [2021-06-13 07:35:29,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 1109 flow [2021-06-13 07:35:29,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 882 flow, removed 96 selfloop flow, removed 15 redundant places. [2021-06-13 07:35:29,738 INFO L241 Difference]: Finished difference. Result has 169 places, 122 transitions, 609 flow [2021-06-13 07:35:29,738 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=609, PETRI_PLACES=169, PETRI_TRANSITIONS=122} [2021-06-13 07:35:29,739 INFO L335 CegarLoopForPetriNet]: 98 programPoint places, 71 predicate places. [2021-06-13 07:35:29,739 INFO L482 AbstractCegarLoop]: Abstraction has has 169 places, 122 transitions, 609 flow [2021-06-13 07:35:29,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 91.125) internal successors, (729), 8 states have internal predecessors, (729), 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) [2021-06-13 07:35:29,740 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:35:29,740 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:35:29,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-13 07:35:29,740 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:35:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:35:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash 985925076, now seen corresponding path program 1 times [2021-06-13 07:35:29,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:35:29,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073162993] [2021-06-13 07:35:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:35:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:35:29,765 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:35:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-13 07:35:29,795 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-13 07:35:29,829 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-13 07:35:29,829 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-13 07:35:29,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-13 07:35:29,830 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (3/3) [2021-06-13 07:35:29,831 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:35:29,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:35:29 BasicIcfg [2021-06-13 07:35:29,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:35:29,918 INFO L168 Benchmark]: Toolchain (without parser) took 10709.67 ms. Allocated memory was 185.6 MB in the beginning and 574.6 MB in the end (delta: 389.0 MB). Free memory was 148.2 MB in the beginning and 532.6 MB in the end (delta: -384.4 MB). Peak memory consumption was 332.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,918 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 185.6 MB. Free memory is still 166.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.81 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 146.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 185.6 MB. Free memory was 146.3 MB in the beginning and 143.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L168 Benchmark]: Boogie Preprocessor took 30.91 ms. Allocated memory is still 185.6 MB. Free memory was 143.8 MB in the beginning and 141.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L168 Benchmark]: RCFGBuilder took 1279.98 ms. Allocated memory was 185.6 MB in the beginning and 244.3 MB in the end (delta: 58.7 MB). Free memory was 141.1 MB in the beginning and 219.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L168 Benchmark]: TraceAbstraction took 8845.27 ms. Allocated memory was 244.3 MB in the beginning and 574.6 MB in the end (delta: 330.3 MB). Free memory was 219.0 MB in the beginning and 532.6 MB in the end (delta: -313.6 MB). Peak memory consumption was 343.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:35:29,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 185.6 MB. Free memory is still 166.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 501.81 ms. Allocated memory is still 185.6 MB. Free memory was 148.0 MB in the beginning and 146.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.55 ms. Allocated memory is still 185.6 MB. Free memory was 146.3 MB in the beginning and 143.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.91 ms. Allocated memory is still 185.6 MB. Free memory was 143.8 MB in the beginning and 141.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1279.98 ms. Allocated memory was 185.6 MB in the beginning and 244.3 MB in the end (delta: 58.7 MB). Free memory was 141.1 MB in the beginning and 219.6 MB in the end (delta: -78.4 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8845.27 ms. Allocated memory was 244.3 MB in the beginning and 574.6 MB in the end (delta: 330.3 MB). Free memory was 219.0 MB in the beginning and 532.6 MB in the end (delta: -313.6 MB). Peak memory consumption was 343.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0] [L710] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0] [L711] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0] [L713] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0] [L715] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L716] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0] [L717] 0 int y$mem_tmp; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0] [L718] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L719] 0 _Bool y$r_buff0_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0] [L720] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L721] 0 _Bool y$r_buff0_thd3; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0] [L722] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0] [L723] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L724] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0] [L725] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0] [L726] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0] [L727] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}] [L728] 0 int y$w_buff0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0] [L729] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L730] 0 int y$w_buff1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0] [L731] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L733] 0 int z = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L734] 0 _Bool weak$$choice0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L735] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L811] 0 pthread_t t2504; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L812] FCALL, FORK 0 pthread_create(&t2504, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 0 pthread_t t2505; VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L814] FCALL, FORK 0 pthread_create(&t2505, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2506; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t2506, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L786] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L739] 1 z = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L742] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L754] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L757] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L789] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L760] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L760] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L760] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L3] COND FALSE 0 !(!cond) VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L822] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L822] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L822] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L18] COND TRUE 0 !expression VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L18] 0 reach_error() VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: P2Thread1of1ForFork0 with 1 thread instances CFG has 7 procedures, 130 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 344.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 80.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 7.5ms SsaConstructionTime, 55.8ms SatisfiabilityAnalysisTime, 74.6ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: P2 with 1 thread instances CFG has 7 procedures, 130 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 130 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 8330.7ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 5802.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 197 SDtfs, 642 SDslu, 741 SDs, 0 SdLazy, 1353 SolverSat, 294 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1126.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2369.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=791occurred in iteration=16, InterpolantAutomatonStates: 207, 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: 38.8ms SsaConstructionTime, 398.4ms SatisfiabilityAnalysisTime, 1904.6ms InterpolantComputationTime, 1307 NumberOfCodeBlocks, 1307 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1210 ConstructedInterpolants, 0 QuantifiedInterpolants, 7208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...