/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/safe004_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:31:03,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:31:03,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:31:03,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:31:03,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:31:03,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:31:03,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:31:03,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:31:03,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:31:03,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:31:03,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:31:03,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:31:03,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:31:03,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:31:03,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:31:03,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:31:03,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:31:03,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:31:03,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:31:03,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:31:03,143 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 02:31:03,170 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:31:03,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:31:03,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:31:03,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:31:03,173 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:31:03,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:31:03,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:31:03,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:31:03,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:31:03,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:31:03,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:31:03,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:31:03,175 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:31:03,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:31:03,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:31:03,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:31:03,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:31:03,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:31:03,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:31:03,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:31:03,422 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:31:03,423 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:31:03,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-03-11 02:31:03,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26fd5d9b/92d9c848a9df4d4687f3bb0e606b7998/FLAG458cda515 [2021-03-11 02:31:04,229 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:31:04,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.oepc.i [2021-03-11 02:31:04,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26fd5d9b/92d9c848a9df4d4687f3bb0e606b7998/FLAG458cda515 [2021-03-11 02:31:04,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b26fd5d9b/92d9c848a9df4d4687f3bb0e606b7998 [2021-03-11 02:31:04,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:31:04,498 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:31:04,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:04,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:31:04,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:31:04,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bad5dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04, skipping insertion in model container [2021-03-11 02:31:04,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:31:04,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:31:04,629 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/safe004_tso.oepc.i[950,963] [2021-03-11 02:31:04,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:04,755 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:31:04,764 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/safe004_tso.oepc.i[950,963] [2021-03-11 02:31:04,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:31:04,828 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:31:04,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04 WrapperNode [2021-03-11 02:31:04,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:31:04,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:04,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:31:04,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:31:04,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:31:04,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:31:04,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:31:04,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:31:04,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (1/1) ... [2021-03-11 02:31:04,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:31:04,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:31:04,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:31:04,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:31:04,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (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 02:31:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:31:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:31:04,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:31:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:31:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:31:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:31:04,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:31:04,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:31:04,913 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 02:31:05,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:31:05,189 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:31:05,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:05 BoogieIcfgContainer [2021-03-11 02:31:05,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:31:05,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:31:05,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:31:05,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:31:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:31:04" (1/3) ... [2021-03-11 02:31:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e63e8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:05, skipping insertion in model container [2021-03-11 02:31:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:31:04" (2/3) ... [2021-03-11 02:31:05,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e63e8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:31:05, skipping insertion in model container [2021-03-11 02:31:05,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:31:05" (3/3) ... [2021-03-11 02:31:05,194 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.oepc.i [2021-03-11 02:31:05,198 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:31:05,200 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:31:05,201 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:31:05,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,219 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,219 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,228 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:31:05,231 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:31:05,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:31:05,253 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:31:05,254 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:31:05,254 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:31:05,254 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:31:05,254 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:31:05,254 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:31:05,254 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:31:05,254 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:31:05,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:31:05,282 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 02:31:05,282 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:05,284 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 57 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 02:31:05,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:31:05,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 02:31:05,297 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 02:31:05,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:05,297 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:05,298 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 02:31:05,298 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:05,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1095445389, now seen corresponding path program 1 times [2021-03-11 02:31:05,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:05,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004912513] [2021-03-11 02:31:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:05,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:05,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:05,474 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:31:05,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:31:05,485 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:05,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:05,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:05,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:05,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:05,527 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 02:31:05,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004912513] [2021-03-11 02:31:05,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:05,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:05,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724917930] [2021-03-11 02:31:05,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:05,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:05,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:05,549 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:31:05,553 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 02:31:05,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:05,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:31:05,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:05,815 INFO L129 PetriNetUnfolder]: 516/1099 cut-off events. [2021-03-11 02:31:05,818 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:31:05,823 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 1099 events. 516/1099 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6501 event pairs, 24 based on Foata normal form. 52/1119 useless extension candidates. Maximal degree in co-relation 1899. Up to 249 conditions per place. [2021-03-11 02:31:05,828 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 22 selfloop transitions, 7 changer transitions 56/127 dead transitions. [2021-03-11 02:31:05,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 433 flow [2021-03-11 02:31:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:31:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:31:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 793 transitions. [2021-03-11 02:31:05,840 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8243243243243243 [2021-03-11 02:31:05,840 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 793 transitions. [2021-03-11 02:31:05,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 793 transitions. [2021-03-11 02:31:05,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:05,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 793 transitions. [2021-03-11 02:31:05,850 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 02:31:05,855 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 02:31:05,856 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 02:31:05,857 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 13 states and 793 transitions. [2021-03-11 02:31:05,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 433 flow [2021-03-11 02:31:05,860 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 02:31:05,862 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 222 flow [2021-03-11 02:31:05,864 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-03-11 02:31:05,864 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-03-11 02:31:05,864 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 222 flow [2021-03-11 02:31:05,865 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 02:31:05,865 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:05,865 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 02:31:05,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:31:05,865 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:05,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:05,866 INFO L82 PathProgramCache]: Analyzing trace with hash -476065713, now seen corresponding path program 1 times [2021-03-11 02:31:05,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:05,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098504109] [2021-03-11 02:31:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:05,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:05,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:05,928 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:31:05,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:31:05,936 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:05,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:05,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:05,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:05,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:05,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:05,969 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 02:31:05,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098504109] [2021-03-11 02:31:05,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:05,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:05,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177745615] [2021-03-11 02:31:05,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:05,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:05,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:05,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:05,972 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:31:05,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 222 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 02:31:05,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:05,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:31:05,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:06,214 INFO L129 PetriNetUnfolder]: 222/653 cut-off events. [2021-03-11 02:31:06,214 INFO L130 PetriNetUnfolder]: For 1362/1660 co-relation queries the response was YES. [2021-03-11 02:31:06,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 653 events. 222/653 cut-off events. For 1362/1660 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3944 event pairs, 11 based on Foata normal form. 22/662 useless extension candidates. Maximal degree in co-relation 2058. Up to 197 conditions per place. [2021-03-11 02:31:06,219 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 25 selfloop transitions, 8 changer transitions 58/133 dead transitions. [2021-03-11 02:31:06,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 133 transitions, 926 flow [2021-03-11 02:31:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:31:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:31:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 776 transitions. [2021-03-11 02:31:06,221 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8066528066528067 [2021-03-11 02:31:06,222 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 776 transitions. [2021-03-11 02:31:06,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 776 transitions. [2021-03-11 02:31:06,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:06,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 776 transitions. [2021-03-11 02:31:06,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.69230769230769) internal successors, (776), 13 states have internal predecessors, (776), 0 states have call successors, (0), 0 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 02:31:06,226 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 02:31:06,227 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 02:31:06,227 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 222 flow. Second operand 13 states and 776 transitions. [2021-03-11 02:31:06,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 133 transitions, 926 flow [2021-03-11 02:31:06,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 900 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:31:06,236 INFO L241 Difference]: Finished difference. Result has 100 places, 67 transitions, 322 flow [2021-03-11 02:31:06,236 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=214, 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=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=322, PETRI_PLACES=100, PETRI_TRANSITIONS=67} [2021-03-11 02:31:06,236 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2021-03-11 02:31:06,236 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 67 transitions, 322 flow [2021-03-11 02:31:06,237 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 02:31:06,237 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:06,237 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 02:31:06,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:31:06,237 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:06,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2003665925, now seen corresponding path program 1 times [2021-03-11 02:31:06,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:06,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985640145] [2021-03-11 02:31:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:06,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,300 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:31:06,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:31:06,308 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:06,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:06,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:06,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:06,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,337 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 02:31:06,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985640145] [2021-03-11 02:31:06,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:06,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:06,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037542051] [2021-03-11 02:31:06,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:06,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:06,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:06,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:06,339 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:31:06,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 67 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 02:31:06,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:06,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:31:06,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:06,480 INFO L129 PetriNetUnfolder]: 109/392 cut-off events. [2021-03-11 02:31:06,480 INFO L130 PetriNetUnfolder]: For 1642/1891 co-relation queries the response was YES. [2021-03-11 02:31:06,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 392 events. 109/392 cut-off events. For 1642/1891 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2018 event pairs, 7 based on Foata normal form. 11/395 useless extension candidates. Maximal degree in co-relation 1482. Up to 113 conditions per place. [2021-03-11 02:31:06,483 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 19 selfloop transitions, 13 changer transitions 50/124 dead transitions. [2021-03-11 02:31:06,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 124 transitions, 1053 flow [2021-03-11 02:31:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:31:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:31:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 653 transitions. [2021-03-11 02:31:06,485 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8022113022113022 [2021-03-11 02:31:06,485 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 653 transitions. [2021-03-11 02:31:06,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 653 transitions. [2021-03-11 02:31:06,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:06,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 653 transitions. [2021-03-11 02:31:06,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.36363636363637) internal successors, (653), 11 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:06,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 02:31:06,487 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 02:31:06,487 INFO L185 Difference]: Start difference. First operand has 100 places, 67 transitions, 322 flow. Second operand 11 states and 653 transitions. [2021-03-11 02:31:06,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 124 transitions, 1053 flow [2021-03-11 02:31:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 124 transitions, 988 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-03-11 02:31:06,494 INFO L241 Difference]: Finished difference. Result has 105 places, 68 transitions, 368 flow [2021-03-11 02:31:06,494 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=368, PETRI_PLACES=105, PETRI_TRANSITIONS=68} [2021-03-11 02:31:06,494 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 37 predicate places. [2021-03-11 02:31:06,494 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 68 transitions, 368 flow [2021-03-11 02:31:06,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 02:31:06,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:06,494 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 02:31:06,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:31:06,495 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash -505273338, now seen corresponding path program 1 times [2021-03-11 02:31:06,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:06,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798501014] [2021-03-11 02:31:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:06,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,532 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:31:06,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:31:06,539 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:31:06,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:31:06,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:06,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:06,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,567 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 02:31:06,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798501014] [2021-03-11 02:31:06,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:06,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:06,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131575664] [2021-03-11 02:31:06,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:06,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:06,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:06,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:06,569 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 74 [2021-03-11 02:31:06,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 68 transitions, 368 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 02:31:06,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:06,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 74 [2021-03-11 02:31:06,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:06,716 INFO L129 PetriNetUnfolder]: 47/219 cut-off events. [2021-03-11 02:31:06,716 INFO L130 PetriNetUnfolder]: For 991/1147 co-relation queries the response was YES. [2021-03-11 02:31:06,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 883 conditions, 219 events. 47/219 cut-off events. For 991/1147 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 813 event pairs, 0 based on Foata normal form. 10/223 useless extension candidates. Maximal degree in co-relation 831. Up to 62 conditions per place. [2021-03-11 02:31:06,718 INFO L132 encePairwiseOnDemand]: 63/74 looper letters, 16 selfloop transitions, 8 changer transitions 41/107 dead transitions. [2021-03-11 02:31:06,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 893 flow [2021-03-11 02:31:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:31:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:31:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 757 transitions. [2021-03-11 02:31:06,720 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7869022869022869 [2021-03-11 02:31:06,720 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 757 transitions. [2021-03-11 02:31:06,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 757 transitions. [2021-03-11 02:31:06,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:06,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 757 transitions. [2021-03-11 02:31:06,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 58.23076923076923) internal successors, (757), 13 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 02:31:06,723 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 02:31:06,723 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 02:31:06,723 INFO L185 Difference]: Start difference. First operand has 105 places, 68 transitions, 368 flow. Second operand 13 states and 757 transitions. [2021-03-11 02:31:06,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 893 flow [2021-03-11 02:31:06,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 746 flow, removed 54 selfloop flow, removed 15 redundant places. [2021-03-11 02:31:06,729 INFO L241 Difference]: Finished difference. Result has 106 places, 62 transitions, 270 flow [2021-03-11 02:31:06,729 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=270, PETRI_PLACES=106, PETRI_TRANSITIONS=62} [2021-03-11 02:31:06,729 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 38 predicate places. [2021-03-11 02:31:06,729 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 62 transitions, 270 flow [2021-03-11 02:31:06,729 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 02:31:06,729 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:06,729 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 02:31:06,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:31:06,730 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1131603086, now seen corresponding path program 1 times [2021-03-11 02:31:06,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:06,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398844806] [2021-03-11 02:31:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:06,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,777 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:06,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:06,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:06,805 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:06,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:06,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,812 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 02:31:06,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398844806] [2021-03-11 02:31:06,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:06,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:31:06,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049049572] [2021-03-11 02:31:06,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:31:06,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:06,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:31:06,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:31:06,814 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:31:06,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 62 transitions, 270 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 02:31:06,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:06,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:31:06,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:06,921 INFO L129 PetriNetUnfolder]: 116/339 cut-off events. [2021-03-11 02:31:06,921 INFO L130 PetriNetUnfolder]: For 179/183 co-relation queries the response was YES. [2021-03-11 02:31:06,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 339 events. 116/339 cut-off events. For 179/183 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1801 event pairs, 24 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 660. Up to 86 conditions per place. [2021-03-11 02:31:06,923 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 12 selfloop transitions, 7 changer transitions 22/92 dead transitions. [2021-03-11 02:31:06,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 412 flow [2021-03-11 02:31:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:31:06,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:31:06,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 643 transitions. [2021-03-11 02:31:06,925 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8689189189189189 [2021-03-11 02:31:06,925 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 643 transitions. [2021-03-11 02:31:06,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 643 transitions. [2021-03-11 02:31:06,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:06,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 643 transitions. [2021-03-11 02:31:06,927 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 02:31:06,928 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 02:31:06,930 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 02:31:06,930 INFO L185 Difference]: Start difference. First operand has 106 places, 62 transitions, 270 flow. Second operand 10 states and 643 transitions. [2021-03-11 02:31:06,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 92 transitions, 412 flow [2021-03-11 02:31:06,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 92 transitions, 346 flow, removed 21 selfloop flow, removed 21 redundant places. [2021-03-11 02:31:06,933 INFO L241 Difference]: Finished difference. Result has 93 places, 67 transitions, 274 flow [2021-03-11 02:31:06,934 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2021-03-11 02:31:06,934 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2021-03-11 02:31:06,934 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 274 flow [2021-03-11 02:31:06,934 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 02:31:06,934 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:06,934 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] [2021-03-11 02:31:06,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:31:06,935 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:06,935 INFO L82 PathProgramCache]: Analyzing trace with hash -489990579, now seen corresponding path program 1 times [2021-03-11 02:31:06,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:06,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857550463] [2021-03-11 02:31:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:06,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:06,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:06,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:06,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:07,000 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:07,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:07,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:07,019 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:07,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:07,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:07,027 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 02:31:07,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857550463] [2021-03-11 02:31:07,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:07,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:31:07,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062316840] [2021-03-11 02:31:07,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:31:07,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:07,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:31:07,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:31:07,029 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:31:07,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 274 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 02:31:07,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:07,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:31:07,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:07,149 INFO L129 PetriNetUnfolder]: 47/210 cut-off events. [2021-03-11 02:31:07,149 INFO L130 PetriNetUnfolder]: For 288/411 co-relation queries the response was YES. [2021-03-11 02:31:07,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 210 events. 47/210 cut-off events. For 288/411 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 918 event pairs, 0 based on Foata normal form. 17/219 useless extension candidates. Maximal degree in co-relation 592. Up to 74 conditions per place. [2021-03-11 02:31:07,150 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 8 selfloop transitions, 9 changer transitions 25/93 dead transitions. [2021-03-11 02:31:07,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 538 flow [2021-03-11 02:31:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 02:31:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 02:31:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 764 transitions. [2021-03-11 02:31:07,152 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8603603603603603 [2021-03-11 02:31:07,152 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 764 transitions. [2021-03-11 02:31:07,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 764 transitions. [2021-03-11 02:31:07,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:07,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 764 transitions. [2021-03-11 02:31:07,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 63.666666666666664) internal successors, (764), 12 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 02:31:07,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:07,155 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:31:07,155 INFO L185 Difference]: Start difference. First operand has 93 places, 67 transitions, 274 flow. Second operand 12 states and 764 transitions. [2021-03-11 02:31:07,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 538 flow [2021-03-11 02:31:07,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 516 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-03-11 02:31:07,158 INFO L241 Difference]: Finished difference. Result has 101 places, 67 transitions, 300 flow [2021-03-11 02:31:07,158 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=300, PETRI_PLACES=101, PETRI_TRANSITIONS=67} [2021-03-11 02:31:07,158 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 33 predicate places. [2021-03-11 02:31:07,158 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 67 transitions, 300 flow [2021-03-11 02:31:07,158 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 02:31:07,158 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:31:07,158 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 02:31:07,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:31:07,158 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:31:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:31:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1379589422, now seen corresponding path program 1 times [2021-03-11 02:31:07,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:31:07,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998111609] [2021-03-11 02:31:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:31:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:31:07,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:07,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:07,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:07,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:31:07,189 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:31:07,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:31:07,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:31:07,209 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:31:07,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:31:07,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:31:07,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:31:07,216 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 02:31:07,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998111609] [2021-03-11 02:31:07,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:31:07,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:31:07,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750224278] [2021-03-11 02:31:07,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:31:07,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:31:07,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:31:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:31:07,220 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:31:07,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 67 transitions, 300 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 02:31:07,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:31:07,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:31:07,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:31:07,335 INFO L129 PetriNetUnfolder]: 7/91 cut-off events. [2021-03-11 02:31:07,335 INFO L130 PetriNetUnfolder]: For 297/392 co-relation queries the response was YES. [2021-03-11 02:31:07,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 91 events. 7/91 cut-off events. For 297/392 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 206 event pairs, 0 based on Foata normal form. 13/101 useless extension candidates. Maximal degree in co-relation 271. Up to 19 conditions per place. [2021-03-11 02:31:07,335 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2021-03-11 02:31:07,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 71 transitions, 416 flow [2021-03-11 02:31:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:31:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:31:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 808 transitions. [2021-03-11 02:31:07,337 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.83991683991684 [2021-03-11 02:31:07,337 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 808 transitions. [2021-03-11 02:31:07,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 808 transitions. [2021-03-11 02:31:07,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:31:07,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 808 transitions. [2021-03-11 02:31:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.15384615384615) internal successors, (808), 13 states have internal predecessors, (808), 0 states have call successors, (0), 0 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 02:31:07,340 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 02:31:07,340 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 02:31:07,340 INFO L185 Difference]: Start difference. First operand has 101 places, 67 transitions, 300 flow. Second operand 13 states and 808 transitions. [2021-03-11 02:31:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 71 transitions, 416 flow [2021-03-11 02:31:07,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 71 transitions, 351 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-03-11 02:31:07,342 INFO L241 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-03-11 02:31:07,342 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-03-11 02:31:07,342 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2021-03-11 02:31:07,342 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-03-11 02:31:07,343 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 02:31:07,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:31:07,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:31:07 BasicIcfg [2021-03-11 02:31:07,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:31:07,347 INFO L168 Benchmark]: Toolchain (without parser) took 2851.36 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 294.8 MB in the beginning and 226.3 MB in the end (delta: 68.5 MB). Peak memory consumption was 138.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,347 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 331.4 MB. Free memory is still 312.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:31:07,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 331.4 MB. Free memory was 294.1 MB in the beginning and 293.9 MB in the end (delta: 155.0 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.44 ms. Allocated memory is still 331.4 MB. Free memory was 293.9 MB in the beginning and 291.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,347 INFO L168 Benchmark]: Boogie Preprocessor took 12.47 ms. Allocated memory is still 331.4 MB. Free memory was 291.9 MB in the beginning and 289.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,348 INFO L168 Benchmark]: RCFGBuilder took 323.87 ms. Allocated memory is still 331.4 MB. Free memory was 289.8 MB in the beginning and 266.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,348 INFO L168 Benchmark]: TraceAbstraction took 2155.04 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 265.6 MB in the beginning and 226.3 MB in the end (delta: 39.3 MB). Peak memory consumption was 107.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:31:07,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 331.4 MB. Free memory is still 312.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 330.06 ms. Allocated memory is still 331.4 MB. Free memory was 294.1 MB in the beginning and 293.9 MB in the end (delta: 155.0 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.44 ms. Allocated memory is still 331.4 MB. Free memory was 293.9 MB in the beginning and 291.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.47 ms. Allocated memory is still 331.4 MB. Free memory was 291.9 MB in the beginning and 289.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 323.87 ms. Allocated memory is still 331.4 MB. Free memory was 289.8 MB in the beginning and 266.7 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2155.04 ms. Allocated memory was 331.4 MB in the beginning and 398.5 MB in the end (delta: 67.1 MB). Free memory was 265.6 MB in the beginning and 226.3 MB in the end (delta: 39.3 MB). Peak memory consumption was 107.5 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: 9.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2091.9ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1278.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 129 SDtfs, 313 SDslu, 425 SDs, 0 SdLazy, 350 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 205.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 768.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=3, InterpolantAutomatonStates: 85, 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: 19.9ms SsaConstructionTime, 116.5ms SatisfiabilityAnalysisTime, 525.0ms InterpolantComputationTime, 316 NumberOfCodeBlocks, 316 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 309 ConstructedInterpolants, 0 QuantifiedInterpolants, 1361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...