/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:33:08,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:33:08,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:33:08,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:33:08,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:33:08,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:33:08,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:33:08,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:33:08,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:33:08,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:33:08,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:33:08,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:33:08,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:33:08,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:33:08,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:33:08,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:33:08,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:33:08,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:33:08,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:33:08,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:33:08,090 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:33:08,133 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:33:08,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:33:08,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:33:08,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:33:08,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:33:08,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:33:08,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:33:08,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:33:08,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:33:08,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:33:08,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:33:08,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:33:08,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:33:08,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:33:08,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:33:08,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:33:08,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:33:08,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:33:08,469 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:33:08,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-11 02:33:08,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2170e1c/7a828312adc94f7796cd77ae3c731985/FLAG21fce1f26 [2021-03-11 02:33:09,042 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:33:09,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2021-03-11 02:33:09,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2170e1c/7a828312adc94f7796cd77ae3c731985/FLAG21fce1f26 [2021-03-11 02:33:09,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af2170e1c/7a828312adc94f7796cd77ae3c731985 [2021-03-11 02:33:09,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:33:09,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:33:09,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:33:09,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:33:09,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:33:09,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:33:09" (1/1) ... [2021-03-11 02:33:09,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a580b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:09, skipping insertion in model container [2021-03-11 02:33:09,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:33:09" (1/1) ... [2021-03-11 02:33:09,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:33:09,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:33:09,779 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/safe015_tso.oepc.i[950,963] [2021-03-11 02:33:09,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:33:09,945 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:33:09,956 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/safe015_tso.oepc.i[950,963] [2021-03-11 02:33:09,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:33:10,064 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:33:10,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10 WrapperNode [2021-03-11 02:33:10,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:33:10,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:33:10,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:33:10,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:33:10,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:33:10,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:33:10,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:33:10,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:33:10,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... [2021-03-11 02:33:10,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:33:10,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:33:10,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:33:10,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:33:10,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:33:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:33:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:33:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:33:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:33:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:33:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:33:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:33:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:33:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:33:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:33:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:33:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:33:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:33:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:33:10,230 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:33:10,585 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:33:10,586 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:33:10,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:10 BoogieIcfgContainer [2021-03-11 02:33:10,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:33:10,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:33:10,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:33:10,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:33:10,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:33:09" (1/3) ... [2021-03-11 02:33:10,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f26833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:10, skipping insertion in model container [2021-03-11 02:33:10,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:33:10" (2/3) ... [2021-03-11 02:33:10,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f26833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:33:10, skipping insertion in model container [2021-03-11 02:33:10,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:33:10" (3/3) ... [2021-03-11 02:33:10,593 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2021-03-11 02:33:10,597 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:33:10,600 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:33:10,600 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:33:10,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,626 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,626 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,627 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,627 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,628 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,629 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,630 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,630 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,631 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,633 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,634 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,634 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,635 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,635 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,635 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,636 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,638 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,638 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,638 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,642 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,642 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,644 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,644 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:33:10,645 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:33:10,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:33:10,676 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:33:10,677 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:33:10,677 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:33:10,677 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:33:10,677 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:33:10,677 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:33:10,677 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:33:10,677 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:33:10,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:33:10,712 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 02:33:10,713 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:10,715 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 49 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:33:10,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:33:10,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 02:33:10,734 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 02:33:10,734 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:10,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:10,735 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:10,736 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:10,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1730311568, now seen corresponding path program 1 times [2021-03-11 02:33:10,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:10,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568843774] [2021-03-11 02:33:10,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:11,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:11,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:11,095 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:33:11,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:33:11,110 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:11,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:11,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:11,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:11,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:11,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:11,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568843774] [2021-03-11 02:33:11,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:11,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:33:11,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837928411] [2021-03-11 02:33:11,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:33:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:11,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:33:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:33:11,177 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:33:11,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:11,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:11,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:33:11,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:11,602 INFO L129 PetriNetUnfolder]: 485/1065 cut-off events. [2021-03-11 02:33:11,608 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:33:11,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 1065 events. 485/1065 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6444 event pairs, 19 based on Foata normal form. 52/1086 useless extension candidates. Maximal degree in co-relation 1839. Up to 212 conditions per place. [2021-03-11 02:33:11,625 INFO L132 encePairwiseOnDemand]: 61/74 looper letters, 21 selfloop transitions, 8 changer transitions 56/127 dead transitions. [2021-03-11 02:33:11,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 433 flow [2021-03-11 02:33:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:33:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:33:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 793 transitions. [2021-03-11 02:33:11,648 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2021-03-11 02:33:11,648 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 793 transitions. [2021-03-11 02:33:11,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 793 transitions. [2021-03-11 02:33:11,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:11,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 793 transitions. [2021-03-11 02:33:11,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.0) internal successors, (793), 13 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:11,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:11,669 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:11,671 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 13 states and 793 transitions. [2021-03-11 02:33:11,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 433 flow [2021-03-11 02:33:11,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 127 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:33:11,683 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 226 flow [2021-03-11 02:33:11,685 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-03-11 02:33:11,685 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-03-11 02:33:11,686 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 226 flow [2021-03-11 02:33:11,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:11,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:11,686 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:11,687 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:33:11,687 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:11,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2044425375, now seen corresponding path program 1 times [2021-03-11 02:33:11,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:11,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314323138] [2021-03-11 02:33:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:11,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:11,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:11,751 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:33:11,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:33:11,763 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:11,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:11,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:11,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:11,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:11,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:11,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314323138] [2021-03-11 02:33:11,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:11,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:33:11,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74997773] [2021-03-11 02:33:11,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:33:11,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:11,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:33:11,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:33:11,807 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:33:11,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 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) [2021-03-11 02:33:11,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:11,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:33:11,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:12,145 INFO L129 PetriNetUnfolder]: 268/802 cut-off events. [2021-03-11 02:33:12,145 INFO L130 PetriNetUnfolder]: For 1700/2238 co-relation queries the response was YES. [2021-03-11 02:33:12,148 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 802 events. 268/802 cut-off events. For 1700/2238 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5265 event pairs, 22 based on Foata normal form. 21/807 useless extension candidates. Maximal degree in co-relation 2517. Up to 181 conditions per place. [2021-03-11 02:33:12,153 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 25 selfloop transitions, 11 changer transitions 52/130 dead transitions. [2021-03-11 02:33:12,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 914 flow [2021-03-11 02:33:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:33:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:33:12,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 780 transitions. [2021-03-11 02:33:12,155 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2021-03-11 02:33:12,155 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 780 transitions. [2021-03-11 02:33:12,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 780 transitions. [2021-03-11 02:33:12,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:12,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 780 transitions. [2021-03-11 02:33:12,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,161 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,161 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 226 flow. Second operand 13 states and 780 transitions. [2021-03-11 02:33:12,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 914 flow [2021-03-11 02:33:12,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 886 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:33:12,173 INFO L241 Difference]: Finished difference. Result has 100 places, 70 transitions, 367 flow [2021-03-11 02:33:12,173 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=367, PETRI_PLACES=100, PETRI_TRANSITIONS=70} [2021-03-11 02:33:12,173 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-03-11 02:33:12,174 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 70 transitions, 367 flow [2021-03-11 02:33:12,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 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) [2021-03-11 02:33:12,175 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:12,175 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:12,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:33:12,175 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:12,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1602960592, now seen corresponding path program 1 times [2021-03-11 02:33:12,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:12,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470790704] [2021-03-11 02:33:12,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:12,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:12,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:12,268 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:33:12,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:33:12,278 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:12,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:12,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:12,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:12,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470790704] [2021-03-11 02:33:12,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:12,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:33:12,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600858570] [2021-03-11 02:33:12,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:33:12,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:33:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:33:12,322 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:33:12,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 70 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 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) [2021-03-11 02:33:12,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:12,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:33:12,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:12,604 INFO L129 PetriNetUnfolder]: 177/593 cut-off events. [2021-03-11 02:33:12,606 INFO L130 PetriNetUnfolder]: For 2771/3341 co-relation queries the response was YES. [2021-03-11 02:33:12,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 593 events. 177/593 cut-off events. For 2771/3341 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3660 event pairs, 0 based on Foata normal form. 21/605 useless extension candidates. Maximal degree in co-relation 2303. Up to 131 conditions per place. [2021-03-11 02:33:12,613 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 27 selfloop transitions, 18 changer transitions 52/139 dead transitions. [2021-03-11 02:33:12,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 139 transitions, 1290 flow [2021-03-11 02:33:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:33:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:33:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 774 transitions. [2021-03-11 02:33:12,617 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8045738045738046 [2021-03-11 02:33:12,617 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 774 transitions. [2021-03-11 02:33:12,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 774 transitions. [2021-03-11 02:33:12,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:12,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 774 transitions. [2021-03-11 02:33:12,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.53846153846154) internal successors, (774), 13 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,621 INFO L185 Difference]: Start difference. First operand has 100 places, 70 transitions, 367 flow. Second operand 13 states and 774 transitions. [2021-03-11 02:33:12,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 139 transitions, 1290 flow [2021-03-11 02:33:12,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 139 transitions, 1212 flow, removed 36 selfloop flow, removed 4 redundant places. [2021-03-11 02:33:12,635 INFO L241 Difference]: Finished difference. Result has 111 places, 79 transitions, 569 flow [2021-03-11 02:33:12,635 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=569, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2021-03-11 02:33:12,636 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 43 predicate places. [2021-03-11 02:33:12,636 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 569 flow [2021-03-11 02:33:12,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 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) [2021-03-11 02:33:12,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:12,636 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:12,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:33:12,636 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:12,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:12,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2114944062, now seen corresponding path program 1 times [2021-03-11 02:33:12,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:12,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215791177] [2021-03-11 02:33:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:12,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:12,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:12,720 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:12,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:12,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:12,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:12,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:12,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215791177] [2021-03-11 02:33:12,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:12,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:33:12,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308261495] [2021-03-11 02:33:12,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:33:12,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:33:12,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:33:12,760 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 74 [2021-03-11 02:33:12,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 569 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:12,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 74 [2021-03-11 02:33:12,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:12,902 INFO L129 PetriNetUnfolder]: 79/294 cut-off events. [2021-03-11 02:33:12,902 INFO L130 PetriNetUnfolder]: For 2708/3144 co-relation queries the response was YES. [2021-03-11 02:33:12,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 294 events. 79/294 cut-off events. For 2708/3144 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1362 event pairs, 10 based on Foata normal form. 41/327 useless extension candidates. Maximal degree in co-relation 1365. Up to 80 conditions per place. [2021-03-11 02:33:12,906 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 14 selfloop transitions, 9 changer transitions 22/107 dead transitions. [2021-03-11 02:33:12,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1019 flow [2021-03-11 02:33:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:33:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:33:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 581 transitions. [2021-03-11 02:33:12,909 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8723723723723724 [2021-03-11 02:33:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 581 transitions. [2021-03-11 02:33:12,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 581 transitions. [2021-03-11 02:33:12,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:12,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 581 transitions. [2021-03-11 02:33:12,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.55555555555556) internal successors, (581), 9 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,913 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,913 INFO L185 Difference]: Start difference. First operand has 111 places, 79 transitions, 569 flow. Second operand 9 states and 581 transitions. [2021-03-11 02:33:12,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1019 flow [2021-03-11 02:33:12,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 947 flow, removed 33 selfloop flow, removed 10 redundant places. [2021-03-11 02:33:12,925 INFO L241 Difference]: Finished difference. Result has 107 places, 85 transitions, 680 flow [2021-03-11 02:33:12,926 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=680, PETRI_PLACES=107, PETRI_TRANSITIONS=85} [2021-03-11 02:33:12,926 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2021-03-11 02:33:12,926 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 85 transitions, 680 flow [2021-03-11 02:33:12,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:12,926 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:12,926 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:12,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:33:12,927 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:12,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:12,930 INFO L82 PathProgramCache]: Analyzing trace with hash -149614536, now seen corresponding path program 1 times [2021-03-11 02:33:12,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:12,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197040766] [2021-03-11 02:33:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:12,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:12,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:12,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,005 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:33:13,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:33:13,020 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:13,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:13,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:13,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197040766] [2021-03-11 02:33:13,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:13,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:33:13,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510662325] [2021-03-11 02:33:13,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:33:13,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:13,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:33:13,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:33:13,071 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:33:13,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 85 transitions, 680 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:13,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:33:13,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:13,235 INFO L129 PetriNetUnfolder]: 100/412 cut-off events. [2021-03-11 02:33:13,235 INFO L130 PetriNetUnfolder]: For 3294/4287 co-relation queries the response was YES. [2021-03-11 02:33:13,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 412 events. 100/412 cut-off events. For 3294/4287 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2312 event pairs, 0 based on Foata normal form. 14/419 useless extension candidates. Maximal degree in co-relation 1972. Up to 106 conditions per place. [2021-03-11 02:33:13,240 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 26 selfloop transitions, 16 changer transitions 41/125 dead transitions. [2021-03-11 02:33:13,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 125 transitions, 1448 flow [2021-03-11 02:33:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:33:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:33:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-03-11 02:33:13,244 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8074324324324325 [2021-03-11 02:33:13,244 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-03-11 02:33:13,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-03-11 02:33:13,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:13,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-03-11 02:33:13,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,249 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,249 INFO L185 Difference]: Start difference. First operand has 107 places, 85 transitions, 680 flow. Second operand 8 states and 478 transitions. [2021-03-11 02:33:13,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 125 transitions, 1448 flow [2021-03-11 02:33:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 1360 flow, removed 38 selfloop flow, removed 10 redundant places. [2021-03-11 02:33:13,262 INFO L241 Difference]: Finished difference. Result has 102 places, 77 transitions, 549 flow [2021-03-11 02:33:13,262 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=549, PETRI_PLACES=102, PETRI_TRANSITIONS=77} [2021-03-11 02:33:13,263 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2021-03-11 02:33:13,263 INFO L480 AbstractCegarLoop]: Abstraction has has 102 places, 77 transitions, 549 flow [2021-03-11 02:33:13,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:13,263 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:13,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:33:13,264 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1134579796, now seen corresponding path program 2 times [2021-03-11 02:33:13,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:13,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728173740] [2021-03-11 02:33:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:13,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,330 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:33:13,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:33:13,342 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:33:13,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:33:13,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:13,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728173740] [2021-03-11 02:33:13,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:13,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:33:13,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399646342] [2021-03-11 02:33:13,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:33:13,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:13,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:33:13,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:33:13,396 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:33:13,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 77 transitions, 549 flow. Second operand has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:13,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:33:13,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:13,528 INFO L129 PetriNetUnfolder]: 74/335 cut-off events. [2021-03-11 02:33:13,528 INFO L130 PetriNetUnfolder]: For 3015/3446 co-relation queries the response was YES. [2021-03-11 02:33:13,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 335 events. 74/335 cut-off events. For 3015/3446 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1748 event pairs, 0 based on Foata normal form. 20/350 useless extension candidates. Maximal degree in co-relation 1551. Up to 83 conditions per place. [2021-03-11 02:33:13,531 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 20 selfloop transitions, 13 changer transitions 38/113 dead transitions. [2021-03-11 02:33:13,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 113 transitions, 1236 flow [2021-03-11 02:33:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:33:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:33:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2021-03-11 02:33:13,533 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8033033033033034 [2021-03-11 02:33:13,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 535 transitions. [2021-03-11 02:33:13,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 535 transitions. [2021-03-11 02:33:13,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:13,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 535 transitions. [2021-03-11 02:33:13,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.44444444444444) internal successors, (535), 9 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,537 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,537 INFO L185 Difference]: Start difference. First operand has 102 places, 77 transitions, 549 flow. Second operand 9 states and 535 transitions. [2021-03-11 02:33:13,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 113 transitions, 1236 flow [2021-03-11 02:33:13,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 1131 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-03-11 02:33:13,549 INFO L241 Difference]: Finished difference. Result has 104 places, 70 transitions, 439 flow [2021-03-11 02:33:13,549 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2021-03-11 02:33:13,549 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 36 predicate places. [2021-03-11 02:33:13,549 INFO L480 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 439 flow [2021-03-11 02:33:13,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.75) internal successors, (446), 8 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,550 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:13,550 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:13,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:33:13,550 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:13,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1709482781, now seen corresponding path program 1 times [2021-03-11 02:33:13,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:13,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263618116] [2021-03-11 02:33:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:13,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,618 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:33:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:33:13,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:33:13,642 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:33:13,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:13,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263618116] [2021-03-11 02:33:13,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:13,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:33:13,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627996402] [2021-03-11 02:33:13,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:33:13,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:13,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:33:13,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:33:13,654 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:33:13,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:13,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:33:13,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:13,821 INFO L129 PetriNetUnfolder]: 258/701 cut-off events. [2021-03-11 02:33:13,821 INFO L130 PetriNetUnfolder]: For 1716/1818 co-relation queries the response was YES. [2021-03-11 02:33:13,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 701 events. 258/701 cut-off events. For 1716/1818 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4789 event pairs, 34 based on Foata normal form. 13/647 useless extension candidates. Maximal degree in co-relation 1732. Up to 179 conditions per place. [2021-03-11 02:33:13,828 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 24 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2021-03-11 02:33:13,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 581 flow [2021-03-11 02:33:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:33:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:33:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 643 transitions. [2021-03-11 02:33:13,831 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8689189189189189 [2021-03-11 02:33:13,831 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 643 transitions. [2021-03-11 02:33:13,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 643 transitions. [2021-03-11 02:33:13,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:13,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 643 transitions. [2021-03-11 02:33:13,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.3) internal successors, (643), 10 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,835 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,835 INFO L185 Difference]: Start difference. First operand has 104 places, 70 transitions, 439 flow. Second operand 10 states and 643 transitions. [2021-03-11 02:33:13,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 581 flow [2021-03-11 02:33:13,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 529 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-11 02:33:13,841 INFO L241 Difference]: Finished difference. Result has 106 places, 85 transitions, 507 flow [2021-03-11 02:33:13,841 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=106, PETRI_TRANSITIONS=85} [2021-03-11 02:33:13,841 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2021-03-11 02:33:13,841 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 85 transitions, 507 flow [2021-03-11 02:33:13,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:13,841 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:13,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:33:13,842 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:13,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:13,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1587765752, now seen corresponding path program 1 times [2021-03-11 02:33:13,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:13,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173609339] [2021-03-11 02:33:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:13,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:13,900 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:33:13,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:33:13,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:33:13,924 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:33:13,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:13,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:13,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:13,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173609339] [2021-03-11 02:33:13,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:13,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:33:13,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949043530] [2021-03-11 02:33:13,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:33:13,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:13,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:33:13,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:33:13,935 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:33:13,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 85 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:13,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:13,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:33:13,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:14,179 INFO L129 PetriNetUnfolder]: 230/681 cut-off events. [2021-03-11 02:33:14,180 INFO L130 PetriNetUnfolder]: For 1819/2272 co-relation queries the response was YES. [2021-03-11 02:33:14,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2370 conditions, 681 events. 230/681 cut-off events. For 1819/2272 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4936 event pairs, 3 based on Foata normal form. 87/716 useless extension candidates. Maximal degree in co-relation 2310. Up to 234 conditions per place. [2021-03-11 02:33:14,187 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 16 selfloop transitions, 32 changer transitions 13/120 dead transitions. [2021-03-11 02:33:14,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 120 transitions, 853 flow [2021-03-11 02:33:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:33:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:33:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 837 transitions. [2021-03-11 02:33:14,190 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8700623700623701 [2021-03-11 02:33:14,190 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 837 transitions. [2021-03-11 02:33:14,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 837 transitions. [2021-03-11 02:33:14,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:14,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 837 transitions. [2021-03-11 02:33:14,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 64.38461538461539) internal successors, (837), 13 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,194 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 74.0) internal successors, (1036), 14 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,194 INFO L185 Difference]: Start difference. First operand has 106 places, 85 transitions, 507 flow. Second operand 13 states and 837 transitions. [2021-03-11 02:33:14,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 120 transitions, 853 flow [2021-03-11 02:33:14,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 120 transitions, 827 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:33:14,201 INFO L241 Difference]: Finished difference. Result has 118 places, 101 transitions, 684 flow [2021-03-11 02:33:14,201 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=684, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2021-03-11 02:33:14,201 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 50 predicate places. [2021-03-11 02:33:14,201 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 684 flow [2021-03-11 02:33:14,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,202 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:33:14,202 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:33:14,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:33:14,202 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:33:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:33:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2137339483, now seen corresponding path program 1 times [2021-03-11 02:33:14,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:33:14,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005445078] [2021-03-11 02:33:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:33:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:33:14,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:14,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:14,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:14,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:33:14,241 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:33:14,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:33:14,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:33:14,263 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:33:14,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:33:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:33:14,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:33:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:33:14,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005445078] [2021-03-11 02:33:14,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:33:14,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:33:14,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734504486] [2021-03-11 02:33:14,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:33:14,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:33:14,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:33:14,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:33:14,275 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:33:14,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 684 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:33:14,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:33:14,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:33:14,533 INFO L129 PetriNetUnfolder]: 185/595 cut-off events. [2021-03-11 02:33:14,534 INFO L130 PetriNetUnfolder]: For 2395/3117 co-relation queries the response was YES. [2021-03-11 02:33:14,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 595 events. 185/595 cut-off events. For 2395/3117 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4439 event pairs, 0 based on Foata normal form. 87/630 useless extension candidates. Maximal degree in co-relation 2336. Up to 182 conditions per place. [2021-03-11 02:33:14,539 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 0 selfloop transitions, 0 changer transitions 107/107 dead transitions. [2021-03-11 02:33:14,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 107 transitions, 839 flow [2021-03-11 02:33:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:33:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:33:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 947 transitions. [2021-03-11 02:33:14,542 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8531531531531531 [2021-03-11 02:33:14,542 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 947 transitions. [2021-03-11 02:33:14,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 947 transitions. [2021-03-11 02:33:14,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:33:14,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 947 transitions. [2021-03-11 02:33:14,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.13333333333333) internal successors, (947), 15 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,549 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 74.0) internal successors, (1184), 16 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,549 INFO L185 Difference]: Start difference. First operand has 118 places, 101 transitions, 684 flow. Second operand 15 states and 947 transitions. [2021-03-11 02:33:14,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 107 transitions, 839 flow [2021-03-11 02:33:14,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 666 flow, removed 61 selfloop flow, removed 17 redundant places. [2021-03-11 02:33:14,562 INFO L241 Difference]: Finished difference. Result has 108 places, 0 transitions, 0 flow [2021-03-11 02:33:14,562 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=108, PETRI_TRANSITIONS=0} [2021-03-11 02:33:14,562 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2021-03-11 02:33:14,562 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 0 transitions, 0 flow [2021-03-11 02:33:14,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:33:14,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:33:14,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:33:14 BasicIcfg [2021-03-11 02:33:14,567 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:33:14,570 INFO L168 Benchmark]: Toolchain (without parser) took 5045.76 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 310.6 MB in the beginning and 294.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 88.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:33:14,570 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 329.0 MB in the beginning and 328.9 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:33:14,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.62 ms. Allocated memory is still 348.1 MB. Free memory was 309.9 MB in the beginning and 309.0 MB in the end (delta: 985.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:33:14,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 348.1 MB. Free memory was 309.0 MB in the beginning and 306.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:33:14,572 INFO L168 Benchmark]: Boogie Preprocessor took 34.61 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:33:14,572 INFO L168 Benchmark]: RCFGBuilder took 437.97 ms. Allocated memory is still 348.1 MB. Free memory was 305.9 MB in the beginning and 281.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:33:14,573 INFO L168 Benchmark]: TraceAbstraction took 3977.65 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 281.8 MB in the beginning and 294.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:33:14,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 348.1 MB. Free memory was 329.0 MB in the beginning and 328.9 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 536.62 ms. Allocated memory is still 348.1 MB. Free memory was 309.9 MB in the beginning and 309.0 MB in the end (delta: 985.4 kB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 47.45 ms. Allocated memory is still 348.1 MB. Free memory was 309.0 MB in the beginning and 306.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 34.61 ms. Allocated memory is still 348.1 MB. Free memory was 306.9 MB in the beginning and 305.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 437.97 ms. Allocated memory is still 348.1 MB. Free memory was 305.9 MB in the beginning and 281.8 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3977.65 ms. Allocated memory was 348.1 MB in the beginning and 419.4 MB in the end (delta: 71.3 MB). Free memory was 281.8 MB in the beginning and 294.1 MB in the end (delta: -12.4 MB). Peak memory consumption was 60.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3889.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2455.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 157 SDtfs, 357 SDslu, 547 SDs, 0 SdLazy, 493 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 372.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1210.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=684occurred in iteration=8, InterpolantAutomatonStates: 103, 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: 33.3ms SsaConstructionTime, 216.5ms SatisfiabilityAnalysisTime, 936.7ms InterpolantComputationTime, 400 NumberOfCodeBlocks, 400 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...