/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:30:22,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:30:22,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:30:22,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:30:22,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:30:22,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:30:22,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:30:22,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:30:22,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:30:22,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:30:22,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:30:22,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:30:22,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:30:22,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:30:22,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:30:22,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:30:22,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:30:22,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:30:22,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:30:22,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:30:22,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:30:22,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:30:22,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:30:22,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:30:22,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:30:22,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:30:22,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:30:22,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:30:22,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:30:22,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:30:22,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:30:22,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:30:22,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:30:22,980 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:30:22,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:30:22,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:30:22,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:30:22,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:30:22,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:30:22,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:30:22,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:30:22,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:30:22,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:30:22,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:30:23,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:30:23,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:30:23,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:30:23,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:30:23,238 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:30:23,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-06-10 21:30:23,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f353b7bd1/3dcf40b4062b4472acc5e22a85f4025b/FLAGe05e2db23 [2021-06-10 21:30:23,665 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:30:23,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-06-10 21:30:23,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f353b7bd1/3dcf40b4062b4472acc5e22a85f4025b/FLAGe05e2db23 [2021-06-10 21:30:24,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f353b7bd1/3dcf40b4062b4472acc5e22a85f4025b [2021-06-10 21:30:24,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:30:24,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:30:24,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:30:24,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:30:24,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:30:24,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35697b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24, skipping insertion in model container [2021-06-10 21:30:24,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:30:24,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:30:24,244 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i[949,962] [2021-06-10 21:30:24,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:30:24,388 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:30:24,397 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i[949,962] [2021-06-10 21:30:24,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:30:24,479 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:30:24,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24 WrapperNode [2021-06-10 21:30:24,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:30:24,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:30:24,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:30:24,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:30:24,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:30:24,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:30:24,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:30:24,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:30:24,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... [2021-06-10 21:30:24,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:30:24,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:30:24,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:30:24,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:30:24,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:30:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:30:24,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:30:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:30:24,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:30:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:30:24,605 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:30:24,605 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:30:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:30:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:30:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:30:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:30:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:30:24,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:30:24,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:30:24,608 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:30:24,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:30:24,861 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:30:24,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:30:24 BoogieIcfgContainer [2021-06-10 21:30:24,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:30:24,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:30:24,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:30:24,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:30:24,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:30:24" (1/3) ... [2021-06-10 21:30:24,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d2aea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:30:24, skipping insertion in model container [2021-06-10 21:30:24,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:24" (2/3) ... [2021-06-10 21:30:24,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d2aea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:30:24, skipping insertion in model container [2021-06-10 21:30:24,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:30:24" (3/3) ... [2021-06-10 21:30:24,867 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i [2021-06-10 21:30:24,876 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:30:24,879 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:30:24,880 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:30:24,907 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,907 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,908 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,909 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,910 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,911 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,912 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,913 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,913 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,916 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,918 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,918 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:24,919 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:30:24,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 21:30:24,944 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:30:24,944 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:30:24,944 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:30:24,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:30:24,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:30:24,945 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:30:24,945 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:30:24,945 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:30:24,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 21:30:24,975 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 21:30:24,976 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:24,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 21:30:24,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 21:30:24,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 21:30:24,982 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:30:24,990 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-10 21:30:24,993 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-06-10 21:30:24,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-06-10 21:30:25,014 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-06-10 21:30:25,014 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:25,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-06-10 21:30:25,017 INFO L151 LiptonReduction]: Number of co-enabled transitions 804 [2021-06-10 21:30:25,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:25,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:25,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:25,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:25,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:30:25,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,736 INFO L147 QuantifierPusher]: treesize reduction 22, result has 4.3 percent of original size 1 [2021-06-10 21:30:25,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:25,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:25,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:25,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:25,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:25,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:26,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:26,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 21:30:26,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:26,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:26,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:26,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:26,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:26,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:26,855 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:30:27,069 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-10 21:30:27,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:27,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:27,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:27,158 INFO L163 LiptonReduction]: Checked pairs total: 1334 [2021-06-10 21:30:27,158 INFO L165 LiptonReduction]: Total number of compositions: 46 [2021-06-10 21:30:27,161 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2180 [2021-06-10 21:30:27,168 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-10 21:30:27,168 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:27,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,168 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2025940466, now seen corresponding path program 1 times [2021-06-10 21:30:27,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731798350] [2021-06-10 21:30:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731798350] [2021-06-10 21:30:27,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:30:27,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608762828] [2021-06-10 21:30:27,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:30:27,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:30:27,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:30:27,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 120 [2021-06-10 21:30:27,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 120 [2021-06-10 21:30:27,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,312 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 21:30:27,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:27,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:30:27,313 INFO L132 encePairwiseOnDemand]: 119/120 looper letters, 0 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2021-06-10 21:30:27,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 41 flow [2021-06-10 21:30:27,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:30:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:30:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 227 transitions. [2021-06-10 21:30:27,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9458333333333333 [2021-06-10 21:30:27,322 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 227 transitions. [2021-06-10 21:30:27,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 227 transitions. [2021-06-10 21:30:27,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 227 transitions. [2021-06-10 21:30:27,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,329 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,330 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 2 states and 227 transitions. [2021-06-10 21:30:27,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 41 flow [2021-06-10 21:30:27,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 16 transitions, 38 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 21:30:27,333 INFO L241 Difference]: Finished difference. Result has 24 places, 16 transitions, 38 flow [2021-06-10 21:30:27,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2021-06-10 21:30:27,334 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2021-06-10 21:30:27,334 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 38 flow [2021-06-10 21:30:27,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 113.5) internal successors, (227), 2 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,335 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:30:27,335 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1620355304, now seen corresponding path program 1 times [2021-06-10 21:30:27,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801981931] [2021-06-10 21:30:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,390 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 21:30:27,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801981931] [2021-06-10 21:30:27,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:30:27,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271427667] [2021-06-10 21:30:27,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:30:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:30:27,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:30:27,404 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 120 [2021-06-10 21:30:27,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 120 [2021-06-10 21:30:27,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,422 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-06-10 21:30:27,422 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:27,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 32 events. 7/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 61 event pairs, 3 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 56. Up to 18 conditions per place. [2021-06-10 21:30:27,422 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 4 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2021-06-10 21:30:27,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 56 flow [2021-06-10 21:30:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:30:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:30:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-06-10 21:30:27,436 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2021-06-10 21:30:27,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-06-10 21:30:27,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-06-10 21:30:27,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-06-10 21:30:27,437 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) [2021-06-10 21:30:27,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,439 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 38 flow. Second operand 3 states and 296 transitions. [2021-06-10 21:30:27,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 56 flow [2021-06-10 21:30:27,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:30:27,440 INFO L241 Difference]: Finished difference. Result has 27 places, 18 transitions, 57 flow [2021-06-10 21:30:27,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2021-06-10 21:30:27,440 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-06-10 21:30:27,440 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 57 flow [2021-06-10 21:30:27,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,441 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,441 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:30:27,441 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1308592632, now seen corresponding path program 1 times [2021-06-10 21:30:27,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58085642] [2021-06-10 21:30:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58085642] [2021-06-10 21:30:27,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:30:27,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551825143] [2021-06-10 21:30:27,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:27,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:27,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:27,498 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 120 [2021-06-10 21:30:27,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 120 [2021-06-10 21:30:27,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,520 INFO L129 PetriNetUnfolder]: 5/37 cut-off events. [2021-06-10 21:30:27,521 INFO L130 PetriNetUnfolder]: For 12/22 co-relation queries the response was YES. [2021-06-10 21:30:27,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 37 events. 5/37 cut-off events. For 12/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 101 event pairs, 0 based on Foata normal form. 6/43 useless extension candidates. Maximal degree in co-relation 77. Up to 13 conditions per place. [2021-06-10 21:30:27,525 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 4 selfloop transitions, 4 changer transitions 4/23 dead transitions. [2021-06-10 21:30:27,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 103 flow [2021-06-10 21:30:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:30:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:30:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 390 transitions. [2021-06-10 21:30:27,527 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8125 [2021-06-10 21:30:27,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 390 transitions. [2021-06-10 21:30:27,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 390 transitions. [2021-06-10 21:30:27,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 390 transitions. [2021-06-10 21:30:27,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,533 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 57 flow. Second operand 4 states and 390 transitions. [2021-06-10 21:30:27,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 103 flow [2021-06-10 21:30:27,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:30:27,534 INFO L241 Difference]: Finished difference. Result has 31 places, 18 transitions, 71 flow [2021-06-10 21:30:27,534 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2021-06-10 21:30:27,534 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-06-10 21:30:27,534 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 71 flow [2021-06-10 21:30:27,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,535 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,535 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:30:27,535 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1910891145, now seen corresponding path program 1 times [2021-06-10 21:30:27,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057119042] [2021-06-10 21:30:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,595 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-06-10 21:30:27,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:30:27,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057119042] [2021-06-10 21:30:27,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:30:27,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514328879] [2021-06-10 21:30:27,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:27,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:27,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:30:27,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:30:27,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,639 INFO L129 PetriNetUnfolder]: 38/89 cut-off events. [2021-06-10 21:30:27,639 INFO L130 PetriNetUnfolder]: For 118/142 co-relation queries the response was YES. [2021-06-10 21:30:27,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 89 events. 38/89 cut-off events. For 118/142 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 321 event pairs, 14 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 213. Up to 57 conditions per place. [2021-06-10 21:30:27,640 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 7 changer transitions 2/28 dead transitions. [2021-06-10 21:30:27,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2021-06-10 21:30:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:30:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:30:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2021-06-10 21:30:27,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.78 [2021-06-10 21:30:27,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2021-06-10 21:30:27,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2021-06-10 21:30:27,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2021-06-10 21:30:27,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,647 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 71 flow. Second operand 5 states and 468 transitions. [2021-06-10 21:30:27,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2021-06-10 21:30:27,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:30:27,648 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 120 flow [2021-06-10 21:30:27,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-06-10 21:30:27,649 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-06-10 21:30:27,649 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 120 flow [2021-06-10 21:30:27,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:30:27,649 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,650 INFO L82 PathProgramCache]: Analyzing trace with hash -860042948, now seen corresponding path program 1 times [2021-06-10 21:30:27,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555695044] [2021-06-10 21:30:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,710 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:30:27,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:30:27,713 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-10 21:30:27,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555695044] [2021-06-10 21:30:27,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:30:27,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226298708] [2021-06-10 21:30:27,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:30:27,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:30:27,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:30:27,733 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:30:27,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:30:27,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,780 INFO L129 PetriNetUnfolder]: 24/74 cut-off events. [2021-06-10 21:30:27,781 INFO L130 PetriNetUnfolder]: For 266/391 co-relation queries the response was YES. [2021-06-10 21:30:27,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 74 events. 24/74 cut-off events. For 266/391 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 268 event pairs, 2 based on Foata normal form. 37/106 useless extension candidates. Maximal degree in co-relation 275. Up to 52 conditions per place. [2021-06-10 21:30:27,782 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 5 selfloop transitions, 13 changer transitions 4/34 dead transitions. [2021-06-10 21:30:27,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 222 flow [2021-06-10 21:30:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:30:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:30:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 654 transitions. [2021-06-10 21:30:27,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7785714285714286 [2021-06-10 21:30:27,783 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 654 transitions. [2021-06-10 21:30:27,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 654 transitions. [2021-06-10 21:30:27,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 654 transitions. [2021-06-10 21:30:27,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,786 INFO L185 Difference]: Start difference. First operand has 36 places, 24 transitions, 120 flow. Second operand 7 states and 654 transitions. [2021-06-10 21:30:27,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 222 flow [2021-06-10 21:30:27,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:30:27,788 INFO L241 Difference]: Finished difference. Result has 44 places, 30 transitions, 204 flow [2021-06-10 21:30:27,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=204, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2021-06-10 21:30:27,788 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2021-06-10 21:30:27,788 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 204 flow [2021-06-10 21:30:27,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,789 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,789 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,789 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:30:27,789 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash -2013565361, now seen corresponding path program 1 times [2021-06-10 21:30:27,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763488779] [2021-06-10 21:30:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,819 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-06-10 21:30:27,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 21:30:27,823 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-06-10 21:30:27,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763488779] [2021-06-10 21:30:27,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:30:27,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213623791] [2021-06-10 21:30:27,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:30:27,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:30:27,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:30:27,831 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 120 [2021-06-10 21:30:27,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 120 [2021-06-10 21:30:27,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,890 INFO L129 PetriNetUnfolder]: 13/58 cut-off events. [2021-06-10 21:30:27,890 INFO L130 PetriNetUnfolder]: For 443/731 co-relation queries the response was YES. [2021-06-10 21:30:27,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 58 events. 13/58 cut-off events. For 443/731 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 190 event pairs, 0 based on Foata normal form. 49/102 useless extension candidates. Maximal degree in co-relation 269. Up to 41 conditions per place. [2021-06-10 21:30:27,892 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 2 selfloop transitions, 17 changer transitions 3/34 dead transitions. [2021-06-10 21:30:27,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 34 transitions, 280 flow [2021-06-10 21:30:27,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:30:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:30:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 834 transitions. [2021-06-10 21:30:27,894 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7722222222222223 [2021-06-10 21:30:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 834 transitions. [2021-06-10 21:30:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 834 transitions. [2021-06-10 21:30:27,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 834 transitions. [2021-06-10 21:30:27,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.66666666666667) internal successors, (834), 9 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,898 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,898 INFO L185 Difference]: Start difference. First operand has 44 places, 30 transitions, 204 flow. Second operand 9 states and 834 transitions. [2021-06-10 21:30:27,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 34 transitions, 280 flow [2021-06-10 21:30:27,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 250 flow, removed 11 selfloop flow, removed 2 redundant places. [2021-06-10 21:30:27,904 INFO L241 Difference]: Finished difference. Result has 53 places, 31 transitions, 230 flow [2021-06-10 21:30:27,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=230, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2021-06-10 21:30:27,904 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2021-06-10 21:30:27,904 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 230 flow [2021-06-10 21:30:27,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:30:27,905 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1208512428, now seen corresponding path program 1 times [2021-06-10 21:30:27,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659732144] [2021-06-10 21:30:27,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:27,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:27,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:27,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:27,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:27,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659732144] [2021-06-10 21:30:27,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:27,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:30:27,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179619335] [2021-06-10 21:30:27,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:27,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:27,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:27,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:27,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-06-10 21:30:27,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 230 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:27,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-06-10 21:30:27,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:27,986 INFO L129 PetriNetUnfolder]: 18/80 cut-off events. [2021-06-10 21:30:27,986 INFO L130 PetriNetUnfolder]: For 643/691 co-relation queries the response was YES. [2021-06-10 21:30:27,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 80 events. 18/80 cut-off events. For 643/691 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 344 event pairs, 0 based on Foata normal form. 10/83 useless extension candidates. Maximal degree in co-relation 325. Up to 32 conditions per place. [2021-06-10 21:30:27,987 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 3 selfloop transitions, 1 changer transitions 10/32 dead transitions. [2021-06-10 21:30:27,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 32 transitions, 242 flow [2021-06-10 21:30:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:30:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:30:27,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2021-06-10 21:30:27,989 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8208333333333333 [2021-06-10 21:30:27,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2021-06-10 21:30:27,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2021-06-10 21:30:27,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:27,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2021-06-10 21:30:27,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,992 INFO L185 Difference]: Start difference. First operand has 53 places, 31 transitions, 230 flow. Second operand 4 states and 394 transitions. [2021-06-10 21:30:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 32 transitions, 242 flow [2021-06-10 21:30:27,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 32 transitions, 184 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-10 21:30:27,995 INFO L241 Difference]: Finished difference. Result has 49 places, 22 transitions, 121 flow [2021-06-10 21:30:27,995 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=22} [2021-06-10 21:30:27,995 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2021-06-10 21:30:27,995 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 22 transitions, 121 flow [2021-06-10 21:30:27,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:27,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:27,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:27,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:30:27,996 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:27,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:27,996 INFO L82 PathProgramCache]: Analyzing trace with hash 519190370, now seen corresponding path program 2 times [2021-06-10 21:30:27,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:27,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439308377] [2021-06-10 21:30:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:28,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:28,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:28,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:28,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:28,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:28,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:28,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439308377] [2021-06-10 21:30:28,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:28,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:30:28,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123398925] [2021-06-10 21:30:28,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:28,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:28,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:28,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:28,052 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 120 [2021-06-10 21:30:28,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 22 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:28,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:28,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 120 [2021-06-10 21:30:28,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:28,063 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-06-10 21:30:28,063 INFO L130 PetriNetUnfolder]: For 60/62 co-relation queries the response was YES. [2021-06-10 21:30:28,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 29 events. 6/29 cut-off events. For 60/62 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-06-10 21:30:28,064 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2021-06-10 21:30:28,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 21 transitions, 111 flow [2021-06-10 21:30:28,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:30:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:30:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-06-10 21:30:28,065 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2021-06-10 21:30:28,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-06-10 21:30:28,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-06-10 21:30:28,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:28,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-06-10 21:30:28,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:28,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:28,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:28,067 INFO L185 Difference]: Start difference. First operand has 49 places, 22 transitions, 121 flow. Second operand 4 states and 385 transitions. [2021-06-10 21:30:28,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 21 transitions, 111 flow [2021-06-10 21:30:28,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 21 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 21:30:28,068 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-06-10 21:30:28,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-06-10 21:30:28,068 INFO L343 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2021-06-10 21:30:28,068 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2021-06-10 21:30:28,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:30:28,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:30:28,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:30:28 BasicIcfg [2021-06-10 21:30:28,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:30:28,076 INFO L168 Benchmark]: Toolchain (without parser) took 4048.63 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 314.7 MB in the beginning and 190.5 MB in the end (delta: 124.2 MB). Peak memory consumption was 196.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,076 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 352.3 MB. Free memory was 332.6 MB in the beginning and 332.5 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:30:28,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.21 ms. Allocated memory is still 352.3 MB. Free memory was 314.6 MB in the beginning and 314.1 MB in the end (delta: 447.8 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.55 ms. Allocated memory is still 352.3 MB. Free memory was 314.1 MB in the beginning and 312.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,078 INFO L168 Benchmark]: Boogie Preprocessor took 21.65 ms. Allocated memory is still 352.3 MB. Free memory was 312.0 MB in the beginning and 309.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,078 INFO L168 Benchmark]: RCFGBuilder took 328.72 ms. Allocated memory is still 352.3 MB. Free memory was 309.9 MB in the beginning and 285.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,080 INFO L168 Benchmark]: TraceAbstraction took 3208.02 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 284.8 MB in the beginning and 190.5 MB in the end (delta: 94.3 MB). Peak memory consumption was 165.6 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:28,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 352.3 MB. Free memory was 332.6 MB in the beginning and 332.5 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 453.21 ms. Allocated memory is still 352.3 MB. Free memory was 314.6 MB in the beginning and 314.1 MB in the end (delta: 447.8 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.55 ms. Allocated memory is still 352.3 MB. Free memory was 314.1 MB in the beginning and 312.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.65 ms. Allocated memory is still 352.3 MB. Free memory was 312.0 MB in the beginning and 309.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 328.72 ms. Allocated memory is still 352.3 MB. Free memory was 309.9 MB in the beginning and 285.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3208.02 ms. Allocated memory was 352.3 MB in the beginning and 423.6 MB in the end (delta: 71.3 MB). Free memory was 284.8 MB in the beginning and 190.5 MB in the end (delta: 94.3 MB). Peak memory consumption was 165.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2165.6ms, 68 PlacesBefore, 26 PlacesAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 776, positive: 709, positive conditional: 0, positive unconditional: 709, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 565, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 565, positive: 539, positive conditional: 0, positive unconditional: 539, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 565, positive: 533, positive conditional: 0, positive unconditional: 533, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 32, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 85, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 776, positive: 170, positive conditional: 0, positive unconditional: 170, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 565, unknown conditional: 0, unknown unconditional: 565] , Statistics on independence cache: Total cache size (in pairs): 907, Positive cache size: 881, Positive conditional cache size: 0, Positive unconditional cache size: 881, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3127.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 338.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2219.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 19 SDslu, 14 SDs, 0 SdLazy, 102 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 94.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=230occurred in iteration=6, InterpolantAutomatonStates: 38, 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: 12.8ms SsaConstructionTime, 115.7ms SatisfiabilityAnalysisTime, 301.8ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...