/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:57:37,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:57:37,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:57:37,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 19:57:37,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:57:37,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:57:37,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:57:37,713 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-24 19:57:37,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:57:37,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:57:37,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:57:37,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:57:37,752 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:57:37,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:57:37,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:57:37,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:57:37,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:57:37,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:57:37,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:57:37,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:57:37,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:57:37,754 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:57:37,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:57:37,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:57:37,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:57:37,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:57:37,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:57:37,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:57:37,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:57:37,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:57:37,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:57:37,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:57:37,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:57:37,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:57:37,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:57:37,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:57:37,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:57:38,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:57:38,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:57:38,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:57:38,117 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:57:38,117 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:57:38,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_pso.opt.i [2021-03-24 19:57:38,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7215867/c6ab79356dea42d3bc477b6e7f96531e/FLAG494f6b1df [2021-03-24 19:57:38,623 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:57:38,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_pso.opt.i [2021-03-24 19:57:38,636 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7215867/c6ab79356dea42d3bc477b6e7f96531e/FLAG494f6b1df [2021-03-24 19:57:38,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d7215867/c6ab79356dea42d3bc477b6e7f96531e [2021-03-24 19:57:38,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:57:38,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:57:38,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:38,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:57:38,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:57:38,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:38" (1/1) ... [2021-03-24 19:57:38,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ac6d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:38, skipping insertion in model container [2021-03-24 19:57:38,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:38" (1/1) ... [2021-03-24 19:57:38,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:57:39,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:57:39,160 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/safe031_pso.opt.i[949,962] [2021-03-24 19:57:39,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:39,342 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:57:39,352 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/safe031_pso.opt.i[949,962] [2021-03-24 19:57:39,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:39,475 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:57:39,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39 WrapperNode [2021-03-24 19:57:39,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:39,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:39,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:57:39,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:57:39,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:39,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:57:39,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:57:39,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:57:39,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (1/1) ... [2021-03-24 19:57:39,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:57:39,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:57:39,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:57:39,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:57:39,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (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 [2021-03-24 19:57:39,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:57:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:57:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:57:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:57:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:57:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:57:39,638 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:57:39,638 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:57:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:57:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:57:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:57:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:57:39,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:57:39,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:57:39,640 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:57:41,132 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:57:41,133 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 19:57:41,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:41 BoogieIcfgContainer [2021-03-24 19:57:41,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:57:41,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:57:41,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:57:41,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:57:41,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:57:38" (1/3) ... [2021-03-24 19:57:41,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de1e140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:41, skipping insertion in model container [2021-03-24 19:57:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:39" (2/3) ... [2021-03-24 19:57:41,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de1e140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:41, skipping insertion in model container [2021-03-24 19:57:41,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:41" (3/3) ... [2021-03-24 19:57:41,141 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_pso.opt.i [2021-03-24 19:57:41,147 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:57:41,150 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 19:57:41,151 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,185 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,187 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,188 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,191 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,195 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,195 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,196 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,197 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,198 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,198 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:41,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:57:41,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 19:57:41,248 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:57:41,250 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:57:41,251 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:57:41,251 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:57:41,251 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:57:41,255 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:57:41,255 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:57:41,255 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:57:41,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 19:57:41,312 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 19:57:41,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:41,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 19:57:41,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 19:57:41,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:41,330 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:57:41,344 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:41,346 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:41,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:41,376 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 19:57:41,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:41,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 19:57:41,381 INFO L142 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-24 19:57:42,635 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 19:57:43,052 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 19:57:43,185 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 19:57:43,869 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 186 [2021-03-24 19:57:44,164 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 19:57:45,458 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 310 DAG size of output: 265 [2021-03-24 19:57:46,094 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 19:57:47,482 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2021-03-24 19:57:47,738 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-24 19:57:48,286 WARN L205 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:57:48,880 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:57:49,071 INFO L154 LiptonReduction]: Checked pairs total: 2611 [2021-03-24 19:57:49,072 INFO L156 LiptonReduction]: Total number of compositions: 66 [2021-03-24 19:57:49,074 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7744 [2021-03-24 19:57:49,083 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-24 19:57:49,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:49,084 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:49,084 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash -2045016767, now seen corresponding path program 1 times [2021-03-24 19:57:49,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:49,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933296273] [2021-03-24 19:57:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:49,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:49,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:49,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933296273] [2021-03-24 19:57:49,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:49,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:57:49,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458979993] [2021-03-24 19:57:49,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:57:49,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:49,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:57:49,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:57:49,308 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:49,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:49,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:49,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:49,402 INFO L129 PetriNetUnfolder]: 23/92 cut-off events. [2021-03-24 19:57:49,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 92 events. 23/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 307 event pairs, 9 based on Foata normal form. 6/91 useless extension candidates. Maximal degree in co-relation 131. Up to 37 conditions per place. [2021-03-24 19:57:49,406 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 7 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2021-03-24 19:57:49,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 107 flow [2021-03-24 19:57:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:57:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:57:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2021-03-24 19:57:49,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8868312757201646 [2021-03-24 19:57:49,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:49,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,452 INFO L185 Difference]: Start difference. First operand has 46 places, 37 transitions, 83 flow. Second operand 3 states and 431 transitions. [2021-03-24 19:57:49,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 107 flow [2021-03-24 19:57:49,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:49,456 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 72 flow [2021-03-24 19:57:49,458 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-24 19:57:49,459 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2021-03-24 19:57:49,459 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 72 flow [2021-03-24 19:57:49,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,460 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:49,460 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:49,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:57:49,460 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1019057741, now seen corresponding path program 1 times [2021-03-24 19:57:49,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:49,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615322592] [2021-03-24 19:57:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:49,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:49,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:49,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:49,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:49,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615322592] [2021-03-24 19:57:49,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:49,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:57:49,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139866194] [2021-03-24 19:57:49,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:49,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:49,651 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:49,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:49,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:49,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:49,691 INFO L129 PetriNetUnfolder]: 6/56 cut-off events. [2021-03-24 19:57:49,691 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 56 events. 6/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 2 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 69. Up to 15 conditions per place. [2021-03-24 19:57:49,693 INFO L132 encePairwiseOnDemand]: 157/162 looper letters, 4 selfloop transitions, 3 changer transitions 5/38 dead transitions. [2021-03-24 19:57:49,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 110 flow [2021-03-24 19:57:49,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:49,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 709 transitions. [2021-03-24 19:57:49,696 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8753086419753087 [2021-03-24 19:57:49,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 709 transitions. [2021-03-24 19:57:49,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 709 transitions. [2021-03-24 19:57:49,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:49,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 709 transitions. [2021-03-24 19:57:49,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,705 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 72 flow. Second operand 5 states and 709 transitions. [2021-03-24 19:57:49,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 110 flow [2021-03-24 19:57:49,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:49,706 INFO L241 Difference]: Finished difference. Result has 45 places, 33 transitions, 95 flow [2021-03-24 19:57:49,706 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2021-03-24 19:57:49,707 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2021-03-24 19:57:49,707 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 95 flow [2021-03-24 19:57:49,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,707 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:49,708 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:49,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:57:49,708 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1010579815, now seen corresponding path program 1 times [2021-03-24 19:57:49,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:49,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161240550] [2021-03-24 19:57:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:49,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:49,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:49,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:49,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:49,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:49,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:49,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:49,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:49,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161240550] [2021-03-24 19:57:49,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:49,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:57:49,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951579600] [2021-03-24 19:57:49,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:57:49,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:57:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:57:49,925 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 162 [2021-03-24 19:57:49,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 95 flow. Second operand has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:49,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:49,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 162 [2021-03-24 19:57:49,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,059 INFO L129 PetriNetUnfolder]: 77/200 cut-off events. [2021-03-24 19:57:50,060 INFO L130 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2021-03-24 19:57:50,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 200 events. 77/200 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 840 event pairs, 44 based on Foata normal form. 16/212 useless extension candidates. Maximal degree in co-relation 424. Up to 99 conditions per place. [2021-03-24 19:57:50,062 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 9 selfloop transitions, 8 changer transitions 10/49 dead transitions. [2021-03-24 19:57:50,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 185 flow [2021-03-24 19:57:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:57:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:57:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1155 transitions. [2021-03-24 19:57:50,065 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7921810699588477 [2021-03-24 19:57:50,066 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1155 transitions. [2021-03-24 19:57:50,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1155 transitions. [2021-03-24 19:57:50,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1155 transitions. [2021-03-24 19:57:50,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.33333333333334) internal successors, (1155), 9 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,072 INFO L185 Difference]: Start difference. First operand has 45 places, 33 transitions, 95 flow. Second operand 9 states and 1155 transitions. [2021-03-24 19:57:50,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 185 flow [2021-03-24 19:57:50,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:50,075 INFO L241 Difference]: Finished difference. Result has 54 places, 37 transitions, 142 flow [2021-03-24 19:57:50,075 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2021-03-24 19:57:50,075 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2021-03-24 19:57:50,075 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 142 flow [2021-03-24 19:57:50,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 125.875) internal successors, (1007), 8 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,076 INFO L263 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] [2021-03-24 19:57:50,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:57:50,077 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash -859002622, now seen corresponding path program 1 times [2021-03-24 19:57:50,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038231635] [2021-03-24 19:57:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:50,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:50,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038231635] [2021-03-24 19:57:50,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:50,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660265361] [2021-03-24 19:57:50,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:50,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:50,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:50,219 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 162 [2021-03-24 19:57:50,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 142 flow. Second operand has 9 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 162 [2021-03-24 19:57:50,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,369 INFO L129 PetriNetUnfolder]: 69/177 cut-off events. [2021-03-24 19:57:50,370 INFO L130 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2021-03-24 19:57:50,371 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 177 events. 69/177 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 674 event pairs, 11 based on Foata normal form. 8/184 useless extension candidates. Maximal degree in co-relation 511. Up to 88 conditions per place. [2021-03-24 19:57:50,375 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 13 selfloop transitions, 9 changer transitions 6/49 dead transitions. [2021-03-24 19:57:50,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 258 flow [2021-03-24 19:57:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:57:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:57:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1238 transitions. [2021-03-24 19:57:50,381 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2021-03-24 19:57:50,381 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1238 transitions. [2021-03-24 19:57:50,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1238 transitions. [2021-03-24 19:57:50,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1238 transitions. [2021-03-24 19:57:50,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,394 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,394 INFO L185 Difference]: Start difference. First operand has 54 places, 37 transitions, 142 flow. Second operand 10 states and 1238 transitions. [2021-03-24 19:57:50,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 258 flow [2021-03-24 19:57:50,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 250 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:50,398 INFO L241 Difference]: Finished difference. Result has 61 places, 39 transitions, 177 flow [2021-03-24 19:57:50,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=177, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2021-03-24 19:57:50,398 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2021-03-24 19:57:50,398 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 177 flow [2021-03-24 19:57:50,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 122.0) internal successors, (1098), 9 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,399 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,399 INFO L263 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] [2021-03-24 19:57:50,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:57:50,399 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1897568002, now seen corresponding path program 1 times [2021-03-24 19:57:50,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955248916] [2021-03-24 19:57:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955248916] [2021-03-24 19:57:50,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:57:50,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926307042] [2021-03-24 19:57:50,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:50,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:50,484 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:50,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:50,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,530 INFO L129 PetriNetUnfolder]: 25/133 cut-off events. [2021-03-24 19:57:50,530 INFO L130 PetriNetUnfolder]: For 701/725 co-relation queries the response was YES. [2021-03-24 19:57:50,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 133 events. 25/133 cut-off events. For 701/725 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 654 event pairs, 10 based on Foata normal form. 14/146 useless extension candidates. Maximal degree in co-relation 424. Up to 39 conditions per place. [2021-03-24 19:57:50,533 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 5 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2021-03-24 19:57:50,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 227 flow [2021-03-24 19:57:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:50,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2021-03-24 19:57:50,540 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8716049382716049 [2021-03-24 19:57:50,540 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2021-03-24 19:57:50,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2021-03-24 19:57:50,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2021-03-24 19:57:50,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,544 INFO L185 Difference]: Start difference. First operand has 61 places, 39 transitions, 177 flow. Second operand 5 states and 706 transitions. [2021-03-24 19:57:50,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 227 flow [2021-03-24 19:57:50,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 201 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 19:57:50,550 INFO L241 Difference]: Finished difference. Result has 59 places, 41 transitions, 194 flow [2021-03-24 19:57:50,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2021-03-24 19:57:50,551 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2021-03-24 19:57:50,551 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 194 flow [2021-03-24 19:57:50,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,551 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,552 INFO L263 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] [2021-03-24 19:57:50,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:57:50,552 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1241887419, now seen corresponding path program 1 times [2021-03-24 19:57:50,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45113110] [2021-03-24 19:57:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:50,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:50,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 19:57:50,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 19:57:50,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:50,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45113110] [2021-03-24 19:57:50,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-24 19:57:50,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507671386] [2021-03-24 19:57:50,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-24 19:57:50,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-24 19:57:50,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-03-24 19:57:50,779 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 162 [2021-03-24 19:57:50,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 162 [2021-03-24 19:57:50,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,919 INFO L129 PetriNetUnfolder]: 52/196 cut-off events. [2021-03-24 19:57:50,919 INFO L130 PetriNetUnfolder]: For 709/715 co-relation queries the response was YES. [2021-03-24 19:57:50,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 196 events. 52/196 cut-off events. For 709/715 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 964 event pairs, 12 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 662. Up to 97 conditions per place. [2021-03-24 19:57:50,921 INFO L132 encePairwiseOnDemand]: 152/162 looper letters, 12 selfloop transitions, 10 changer transitions 5/46 dead transitions. [2021-03-24 19:57:50,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 46 transitions, 275 flow [2021-03-24 19:57:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 19:57:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 19:57:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1311 transitions. [2021-03-24 19:57:50,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7356902356902357 [2021-03-24 19:57:50,928 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1311 transitions. [2021-03-24 19:57:50,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1311 transitions. [2021-03-24 19:57:50,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1311 transitions. [2021-03-24 19:57:50,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 119.18181818181819) internal successors, (1311), 11 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,935 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,935 INFO L185 Difference]: Start difference. First operand has 59 places, 41 transitions, 194 flow. Second operand 11 states and 1311 transitions. [2021-03-24 19:57:50,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 46 transitions, 275 flow [2021-03-24 19:57:50,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 46 transitions, 260 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-24 19:57:50,961 INFO L241 Difference]: Finished difference. Result has 71 places, 39 transitions, 194 flow [2021-03-24 19:57:50,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=194, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2021-03-24 19:57:50,962 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2021-03-24 19:57:50,962 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 194 flow [2021-03-24 19:57:50,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 118.0) internal successors, (1416), 12 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,963 INFO L263 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] [2021-03-24 19:57:50,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:57:50,963 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash -698471130, now seen corresponding path program 1 times [2021-03-24 19:57:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632568201] [2021-03-24 19:57:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,058 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 19:57:51,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 19:57:51,078 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632568201] [2021-03-24 19:57:51,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:51,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219782132] [2021-03-24 19:57:51,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:51,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:51,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:51,086 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2021-03-24 19:57:51,088 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2021-03-24 19:57:51,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,223 INFO L129 PetriNetUnfolder]: 50/169 cut-off events. [2021-03-24 19:57:51,223 INFO L130 PetriNetUnfolder]: For 1004/1015 co-relation queries the response was YES. [2021-03-24 19:57:51,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 169 events. 50/169 cut-off events. For 1004/1015 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 718 event pairs, 12 based on Foata normal form. 10/175 useless extension candidates. Maximal degree in co-relation 595. Up to 82 conditions per place. [2021-03-24 19:57:51,225 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 13 selfloop transitions, 11 changer transitions 5/51 dead transitions. [2021-03-24 19:57:51,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 51 transitions, 320 flow [2021-03-24 19:57:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1019 transitions. [2021-03-24 19:57:51,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7862654320987654 [2021-03-24 19:57:51,228 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1019 transitions. [2021-03-24 19:57:51,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1019 transitions. [2021-03-24 19:57:51,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1019 transitions. [2021-03-24 19:57:51,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.375) internal successors, (1019), 8 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,234 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,234 INFO L185 Difference]: Start difference. First operand has 71 places, 39 transitions, 194 flow. Second operand 8 states and 1019 transitions. [2021-03-24 19:57:51,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 51 transitions, 320 flow [2021-03-24 19:57:51,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 290 flow, removed 6 selfloop flow, removed 12 redundant places. [2021-03-24 19:57:51,239 INFO L241 Difference]: Finished difference. Result has 66 places, 44 transitions, 237 flow [2021-03-24 19:57:51,239 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=237, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2021-03-24 19:57:51,239 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2021-03-24 19:57:51,239 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 237 flow [2021-03-24 19:57:51,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 125.28571428571429) internal successors, (877), 7 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,240 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,240 INFO L263 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] [2021-03-24 19:57:51,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:57:51,240 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,241 INFO L82 PathProgramCache]: Analyzing trace with hash -631722418, now seen corresponding path program 2 times [2021-03-24 19:57:51,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891256449] [2021-03-24 19:57:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:51,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:51,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:51,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891256449] [2021-03-24 19:57:51,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:51,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589878185] [2021-03-24 19:57:51,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:51,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:51,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:51,354 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2021-03-24 19:57:51,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2021-03-24 19:57:51,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,490 INFO L129 PetriNetUnfolder]: 57/190 cut-off events. [2021-03-24 19:57:51,490 INFO L130 PetriNetUnfolder]: For 970/991 co-relation queries the response was YES. [2021-03-24 19:57:51,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 190 events. 57/190 cut-off events. For 970/991 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 870 event pairs, 11 based on Foata normal form. 18/201 useless extension candidates. Maximal degree in co-relation 775. Up to 86 conditions per place. [2021-03-24 19:57:51,492 INFO L132 encePairwiseOnDemand]: 152/162 looper letters, 13 selfloop transitions, 14 changer transitions 5/54 dead transitions. [2021-03-24 19:57:51,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 389 flow [2021-03-24 19:57:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:57:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:57:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1269 transitions. [2021-03-24 19:57:51,496 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2021-03-24 19:57:51,496 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1269 transitions. [2021-03-24 19:57:51,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1269 transitions. [2021-03-24 19:57:51,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1269 transitions. [2021-03-24 19:57:51,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.9) internal successors, (1269), 10 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,502 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,502 INFO L185 Difference]: Start difference. First operand has 66 places, 44 transitions, 237 flow. Second operand 10 states and 1269 transitions. [2021-03-24 19:57:51,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 389 flow [2021-03-24 19:57:51,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 54 transitions, 371 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:51,507 INFO L241 Difference]: Finished difference. Result has 73 places, 46 transitions, 288 flow [2021-03-24 19:57:51,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=288, PETRI_PLACES=73, PETRI_TRANSITIONS=46} [2021-03-24 19:57:51,507 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2021-03-24 19:57:51,507 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 46 transitions, 288 flow [2021-03-24 19:57:51,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,508 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,508 INFO L263 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] [2021-03-24 19:57:51,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:57:51,508 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash 180674630, now seen corresponding path program 3 times [2021-03-24 19:57:51,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533950933] [2021-03-24 19:57:51,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:51,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:51,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533950933] [2021-03-24 19:57:51,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:57:51,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742571659] [2021-03-24 19:57:51,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:57:51,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:57:51,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:57:51,616 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 162 [2021-03-24 19:57:51,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 46 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 162 [2021-03-24 19:57:51,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,750 INFO L129 PetriNetUnfolder]: 48/187 cut-off events. [2021-03-24 19:57:51,750 INFO L130 PetriNetUnfolder]: For 1143/1162 co-relation queries the response was YES. [2021-03-24 19:57:51,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 187 events. 48/187 cut-off events. For 1143/1162 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 943 event pairs, 5 based on Foata normal form. 13/197 useless extension candidates. Maximal degree in co-relation 802. Up to 72 conditions per place. [2021-03-24 19:57:51,752 INFO L132 encePairwiseOnDemand]: 154/162 looper letters, 20 selfloop transitions, 10 changer transitions 5/56 dead transitions. [2021-03-24 19:57:51,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 482 flow [2021-03-24 19:57:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 994 transitions. [2021-03-24 19:57:51,755 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7669753086419753 [2021-03-24 19:57:51,755 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 994 transitions. [2021-03-24 19:57:51,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 994 transitions. [2021-03-24 19:57:51,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 994 transitions. [2021-03-24 19:57:51,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,761 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,761 INFO L185 Difference]: Start difference. First operand has 73 places, 46 transitions, 288 flow. Second operand 8 states and 994 transitions. [2021-03-24 19:57:51,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 482 flow [2021-03-24 19:57:51,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 374 flow, removed 40 selfloop flow, removed 11 redundant places. [2021-03-24 19:57:51,765 INFO L241 Difference]: Finished difference. Result has 70 places, 48 transitions, 280 flow [2021-03-24 19:57:51,765 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2021-03-24 19:57:51,765 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2021-03-24 19:57:51,765 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 280 flow [2021-03-24 19:57:51,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 122.25) internal successors, (978), 8 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,766 INFO L263 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] [2021-03-24 19:57:51,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:57:51,766 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1304937088, now seen corresponding path program 1 times [2021-03-24 19:57:51,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962200411] [2021-03-24 19:57:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962200411] [2021-03-24 19:57:51,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:51,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41443839] [2021-03-24 19:57:51,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:51,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:51,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:51,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:51,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:51,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,931 INFO L129 PetriNetUnfolder]: 172/404 cut-off events. [2021-03-24 19:57:51,931 INFO L130 PetriNetUnfolder]: For 849/893 co-relation queries the response was YES. [2021-03-24 19:57:51,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 404 events. 172/404 cut-off events. For 849/893 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2417 event pairs, 66 based on Foata normal form. 38/365 useless extension candidates. Maximal degree in co-relation 1153. Up to 235 conditions per place. [2021-03-24 19:57:51,934 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 8 changer transitions 1/59 dead transitions. [2021-03-24 19:57:51,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 340 flow [2021-03-24 19:57:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:51,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:51,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2021-03-24 19:57:51,937 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.845679012345679 [2021-03-24 19:57:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,940 INFO L185 Difference]: Start difference. First operand has 70 places, 48 transitions, 280 flow. Second operand 5 states and 685 transitions. [2021-03-24 19:57:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 340 flow [2021-03-24 19:57:51,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 59 transitions, 316 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:51,944 INFO L241 Difference]: Finished difference. Result has 70 places, 54 transitions, 313 flow [2021-03-24 19:57:51,945 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2021-03-24 19:57:51,945 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2021-03-24 19:57:51,945 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 313 flow [2021-03-24 19:57:51,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,946 INFO L263 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] [2021-03-24 19:57:51,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:57:51,946 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,946 INFO L82 PathProgramCache]: Analyzing trace with hash 976432184, now seen corresponding path program 1 times [2021-03-24 19:57:51,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065623199] [2021-03-24 19:57:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:52,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,013 INFO L142 QuantifierPusher]: treesize reduction 8, result has 33.3 percent of original size [2021-03-24 19:57:52,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:52,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:52,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065623199] [2021-03-24 19:57:52,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:52,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:52,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623811031] [2021-03-24 19:57:52,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:52,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:52,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:52,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:52,024 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:52,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:52,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:52,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:52,100 INFO L129 PetriNetUnfolder]: 120/320 cut-off events. [2021-03-24 19:57:52,100 INFO L130 PetriNetUnfolder]: For 812/1173 co-relation queries the response was YES. [2021-03-24 19:57:52,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 320 events. 120/320 cut-off events. For 812/1173 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1803 event pairs, 9 based on Foata normal form. 109/392 useless extension candidates. Maximal degree in co-relation 1172. Up to 186 conditions per place. [2021-03-24 19:57:52,103 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 8 selfloop transitions, 15 changer transitions 3/63 dead transitions. [2021-03-24 19:57:52,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 403 flow [2021-03-24 19:57:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:52,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 959 transitions. [2021-03-24 19:57:52,106 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.845679012345679 [2021-03-24 19:57:52,106 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:52,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,111 INFO L185 Difference]: Start difference. First operand has 70 places, 54 transitions, 313 flow. Second operand 7 states and 959 transitions. [2021-03-24 19:57:52,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 403 flow [2021-03-24 19:57:52,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 386 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-24 19:57:52,116 INFO L241 Difference]: Finished difference. Result has 75 places, 58 transitions, 371 flow [2021-03-24 19:57:52,117 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2021-03-24 19:57:52,117 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2021-03-24 19:57:52,117 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 371 flow [2021-03-24 19:57:52,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,117 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:52,117 INFO L263 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] [2021-03-24 19:57:52,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:57:52,118 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:52,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1708568613, now seen corresponding path program 1 times [2021-03-24 19:57:52,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:52,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895903314] [2021-03-24 19:57:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:52,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:52,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:52,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:52,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:52,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:52,300 INFO L142 QuantifierPusher]: treesize reduction 43, result has 46.9 percent of original size [2021-03-24 19:57:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-24 19:57:52,336 INFO L142 QuantifierPusher]: treesize reduction 62, result has 38.6 percent of original size [2021-03-24 19:57:52,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-24 19:57:52,374 INFO L142 QuantifierPusher]: treesize reduction 37, result has 55.4 percent of original size [2021-03-24 19:57:52,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-24 19:57:52,440 INFO L142 QuantifierPusher]: treesize reduction 17, result has 58.5 percent of original size [2021-03-24 19:57:52,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 19:57:52,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:52,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:52,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895903314] [2021-03-24 19:57:52,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:52,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-24 19:57:52,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729735323] [2021-03-24 19:57:52,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-24 19:57:52,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:52,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-24 19:57:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-03-24 19:57:52,472 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 162 [2021-03-24 19:57:52,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 371 flow. Second operand has 13 states, 13 states have (on average 102.07692307692308) internal successors, (1327), 13 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:52,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 162 [2021-03-24 19:57:52,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:53,028 INFO L129 PetriNetUnfolder]: 454/861 cut-off events. [2021-03-24 19:57:53,028 INFO L130 PetriNetUnfolder]: For 3319/3363 co-relation queries the response was YES. [2021-03-24 19:57:53,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 861 events. 454/861 cut-off events. For 3319/3363 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5043 event pairs, 24 based on Foata normal form. 24/870 useless extension candidates. Maximal degree in co-relation 3976. Up to 605 conditions per place. [2021-03-24 19:57:53,034 INFO L132 encePairwiseOnDemand]: 146/162 looper letters, 29 selfloop transitions, 31 changer transitions 42/117 dead transitions. [2021-03-24 19:57:53,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 1000 flow [2021-03-24 19:57:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-24 19:57:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-24 19:57:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2093 transitions. [2021-03-24 19:57:53,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6459876543209877 [2021-03-24 19:57:53,039 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2093 transitions. [2021-03-24 19:57:53,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2093 transitions. [2021-03-24 19:57:53,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:53,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2093 transitions. [2021-03-24 19:57:53,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 104.65) internal successors, (2093), 20 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 162.0) internal successors, (3402), 21 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,061 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 162.0) internal successors, (3402), 21 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,061 INFO L185 Difference]: Start difference. First operand has 75 places, 58 transitions, 371 flow. Second operand 20 states and 2093 transitions. [2021-03-24 19:57:53,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 1000 flow [2021-03-24 19:57:53,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 117 transitions, 909 flow, removed 33 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:53,074 INFO L241 Difference]: Finished difference. Result has 98 places, 66 transitions, 482 flow [2021-03-24 19:57:53,074 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=482, PETRI_PLACES=98, PETRI_TRANSITIONS=66} [2021-03-24 19:57:53,075 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2021-03-24 19:57:53,075 INFO L480 AbstractCegarLoop]: Abstraction has has 98 places, 66 transitions, 482 flow [2021-03-24 19:57:53,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 102.07692307692308) internal successors, (1327), 13 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,076 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:53,076 INFO L263 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] [2021-03-24 19:57:53,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 19:57:53,076 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:53,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1788509169, now seen corresponding path program 1 times [2021-03-24 19:57:53,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:53,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904802138] [2021-03-24 19:57:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:53,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:53,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:53,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:53,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:53,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:53,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:53,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:53,189 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:53,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:53,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904802138] [2021-03-24 19:57:53,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:53,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:53,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187379120] [2021-03-24 19:57:53,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:53,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:53,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:53,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:53,199 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 162 [2021-03-24 19:57:53,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 66 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:53,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 162 [2021-03-24 19:57:53,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:53,344 INFO L129 PetriNetUnfolder]: 79/240 cut-off events. [2021-03-24 19:57:53,344 INFO L130 PetriNetUnfolder]: For 1376/1383 co-relation queries the response was YES. [2021-03-24 19:57:53,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 240 events. 79/240 cut-off events. For 1376/1383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1197 event pairs, 6 based on Foata normal form. 10/246 useless extension candidates. Maximal degree in co-relation 1127. Up to 96 conditions per place. [2021-03-24 19:57:53,347 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 22 selfloop transitions, 12 changer transitions 4/71 dead transitions. [2021-03-24 19:57:53,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 71 transitions, 624 flow [2021-03-24 19:57:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:57:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:57:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1244 transitions. [2021-03-24 19:57:53,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2021-03-24 19:57:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1244 transitions. [2021-03-24 19:57:53,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1244 transitions. [2021-03-24 19:57:53,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:53,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1244 transitions. [2021-03-24 19:57:53,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.4) internal successors, (1244), 10 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,357 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,357 INFO L185 Difference]: Start difference. First operand has 98 places, 66 transitions, 482 flow. Second operand 10 states and 1244 transitions. [2021-03-24 19:57:53,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 71 transitions, 624 flow [2021-03-24 19:57:53,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 71 transitions, 533 flow, removed 26 selfloop flow, removed 13 redundant places. [2021-03-24 19:57:53,363 INFO L241 Difference]: Finished difference. Result has 88 places, 66 transitions, 446 flow [2021-03-24 19:57:53,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=88, PETRI_TRANSITIONS=66} [2021-03-24 19:57:53,363 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2021-03-24 19:57:53,364 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 66 transitions, 446 flow [2021-03-24 19:57:53,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,364 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:53,364 INFO L263 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] [2021-03-24 19:57:53,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 19:57:53,365 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash -606802411, now seen corresponding path program 2 times [2021-03-24 19:57:53,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:53,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598753525] [2021-03-24 19:57:53,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:53,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:53,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:53,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 19:57:53,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 19:57:53,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 19:57:53,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:53,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:53,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:53,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598753525] [2021-03-24 19:57:53,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:53,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:53,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058065862] [2021-03-24 19:57:53,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:53,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:53,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:53,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:53,500 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 162 [2021-03-24 19:57:53,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 66 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:53,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 162 [2021-03-24 19:57:53,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:53,645 INFO L129 PetriNetUnfolder]: 94/271 cut-off events. [2021-03-24 19:57:53,645 INFO L130 PetriNetUnfolder]: For 1152/1160 co-relation queries the response was YES. [2021-03-24 19:57:53,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 271 events. 94/271 cut-off events. For 1152/1160 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1399 event pairs, 11 based on Foata normal form. 12/274 useless extension candidates. Maximal degree in co-relation 1132. Up to 88 conditions per place. [2021-03-24 19:57:53,647 INFO L132 encePairwiseOnDemand]: 154/162 looper letters, 14 selfloop transitions, 10 changer transitions 21/70 dead transitions. [2021-03-24 19:57:53,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 70 transitions, 566 flow [2021-03-24 19:57:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:57:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:57:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1120 transitions. [2021-03-24 19:57:53,649 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7681755829903978 [2021-03-24 19:57:53,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1120 transitions. [2021-03-24 19:57:53,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1120 transitions. [2021-03-24 19:57:53,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:53,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1120 transitions. [2021-03-24 19:57:53,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.44444444444444) internal successors, (1120), 9 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,654 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,654 INFO L185 Difference]: Start difference. First operand has 88 places, 66 transitions, 446 flow. Second operand 9 states and 1120 transitions. [2021-03-24 19:57:53,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 70 transitions, 566 flow [2021-03-24 19:57:53,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 70 transitions, 522 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-03-24 19:57:53,659 INFO L241 Difference]: Finished difference. Result has 89 places, 48 transitions, 309 flow [2021-03-24 19:57:53,659 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=309, PETRI_PLACES=89, PETRI_TRANSITIONS=48} [2021-03-24 19:57:53,659 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2021-03-24 19:57:53,659 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 48 transitions, 309 flow [2021-03-24 19:57:53,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 123.22222222222223) internal successors, (1109), 9 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:53,660 INFO L263 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] [2021-03-24 19:57:53,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 19:57:53,660 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1013979822, now seen corresponding path program 1 times [2021-03-24 19:57:53,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:53,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251706538] [2021-03-24 19:57:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:53,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:53,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:53,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:53,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:53,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251706538] [2021-03-24 19:57:53,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:53,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:53,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443395434] [2021-03-24 19:57:53,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:53,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:53,702 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 162 [2021-03-24 19:57:53,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 48 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:53,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 162 [2021-03-24 19:57:53,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:53,789 INFO L129 PetriNetUnfolder]: 38/150 cut-off events. [2021-03-24 19:57:53,789 INFO L130 PetriNetUnfolder]: For 951/955 co-relation queries the response was YES. [2021-03-24 19:57:53,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 150 events. 38/150 cut-off events. For 951/955 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 599 event pairs, 6 based on Foata normal form. 5/152 useless extension candidates. Maximal degree in co-relation 606. Up to 48 conditions per place. [2021-03-24 19:57:53,791 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 6 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2021-03-24 19:57:53,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 51 transitions, 361 flow [2021-03-24 19:57:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 695 transitions. [2021-03-24 19:57:53,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8580246913580247 [2021-03-24 19:57:53,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 695 transitions. [2021-03-24 19:57:53,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 695 transitions. [2021-03-24 19:57:53,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:53,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 695 transitions. [2021-03-24 19:57:53,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,795 INFO L185 Difference]: Start difference. First operand has 89 places, 48 transitions, 309 flow. Second operand 5 states and 695 transitions. [2021-03-24 19:57:53,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 51 transitions, 361 flow [2021-03-24 19:57:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 51 transitions, 283 flow, removed 19 selfloop flow, removed 19 redundant places. [2021-03-24 19:57:53,799 INFO L241 Difference]: Finished difference. Result has 69 places, 49 transitions, 258 flow [2021-03-24 19:57:53,799 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2021-03-24 19:57:53,800 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-24 19:57:53,800 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 258 flow [2021-03-24 19:57:53,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,800 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:53,800 INFO L263 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] [2021-03-24 19:57:53,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 19:57:53,800 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:53,801 INFO L82 PathProgramCache]: Analyzing trace with hash 423402189, now seen corresponding path program 1 times [2021-03-24 19:57:53,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:53,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792842773] [2021-03-24 19:57:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:53,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:53,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:53,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,916 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-24 19:57:53,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,918 INFO L142 QuantifierPusher]: treesize reduction 32, result has 25.6 percent of original size [2021-03-24 19:57:53,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:57:53,927 INFO L142 QuantifierPusher]: treesize reduction 13, result has 43.5 percent of original size [2021-03-24 19:57:53,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:53,937 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-24 19:57:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792842773] [2021-03-24 19:57:53,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:53,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 19:57:53,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459191147] [2021-03-24 19:57:53,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:53,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:53,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:53,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:53,943 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 162 [2021-03-24 19:57:53,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 258 flow. Second operand has 9 states, 9 states have (on average 111.44444444444444) internal successors, (1003), 9 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:53,944 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:53,944 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 162 [2021-03-24 19:57:53,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:54,106 INFO L129 PetriNetUnfolder]: 66/183 cut-off events. [2021-03-24 19:57:54,106 INFO L130 PetriNetUnfolder]: For 406/414 co-relation queries the response was YES. [2021-03-24 19:57:54,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 183 events. 66/183 cut-off events. For 406/414 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 711 event pairs, 5 based on Foata normal form. 18/196 useless extension candidates. Maximal degree in co-relation 705. Up to 61 conditions per place. [2021-03-24 19:57:54,107 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 20 selfloop transitions, 15 changer transitions 22/76 dead transitions. [2021-03-24 19:57:54,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 547 flow [2021-03-24 19:57:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 19:57:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 19:57:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1138 transitions. [2021-03-24 19:57:54,112 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7024691358024692 [2021-03-24 19:57:54,112 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1138 transitions. [2021-03-24 19:57:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1138 transitions. [2021-03-24 19:57:54,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:54,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1138 transitions. [2021-03-24 19:57:54,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.8) internal successors, (1138), 10 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,122 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 162.0) internal successors, (1782), 11 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,122 INFO L185 Difference]: Start difference. First operand has 69 places, 49 transitions, 258 flow. Second operand 10 states and 1138 transitions. [2021-03-24 19:57:54,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 547 flow [2021-03-24 19:57:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 501 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-03-24 19:57:54,125 INFO L241 Difference]: Finished difference. Result has 76 places, 48 transitions, 283 flow [2021-03-24 19:57:54,126 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=283, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2021-03-24 19:57:54,126 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2021-03-24 19:57:54,126 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 283 flow [2021-03-24 19:57:54,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 111.44444444444444) internal successors, (1003), 9 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:54,126 INFO L263 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] [2021-03-24 19:57:54,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 19:57:54,127 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:54,127 INFO L82 PathProgramCache]: Analyzing trace with hash 690819369, now seen corresponding path program 2 times [2021-03-24 19:57:54,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:54,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026940394] [2021-03-24 19:57:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:54,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:54,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:54,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:54,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:54,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:54,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:54,206 INFO L142 QuantifierPusher]: treesize reduction 8, result has 33.3 percent of original size [2021-03-24 19:57:54,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:54,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:54,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:54,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:54,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:54,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026940394] [2021-03-24 19:57:54,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:54,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:54,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927535888] [2021-03-24 19:57:54,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:54,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:54,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:54,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:54,222 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:54,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:54,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:54,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:54,267 INFO L129 PetriNetUnfolder]: 17/84 cut-off events. [2021-03-24 19:57:54,267 INFO L130 PetriNetUnfolder]: For 206/208 co-relation queries the response was YES. [2021-03-24 19:57:54,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 84 events. 17/84 cut-off events. For 206/208 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 254 event pairs, 0 based on Foata normal form. 4/87 useless extension candidates. Maximal degree in co-relation 324. Up to 26 conditions per place. [2021-03-24 19:57:54,268 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 2 selfloop transitions, 11 changer transitions 10/50 dead transitions. [2021-03-24 19:57:54,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 50 transitions, 339 flow [2021-03-24 19:57:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2021-03-24 19:57:54,270 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8350970017636684 [2021-03-24 19:57:54,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2021-03-24 19:57:54,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2021-03-24 19:57:54,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:54,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2021-03-24 19:57:54,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,273 INFO L185 Difference]: Start difference. First operand has 76 places, 48 transitions, 283 flow. Second operand 7 states and 947 transitions. [2021-03-24 19:57:54,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 50 transitions, 339 flow [2021-03-24 19:57:54,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 50 transitions, 290 flow, removed 18 selfloop flow, removed 8 redundant places. [2021-03-24 19:57:54,275 INFO L241 Difference]: Finished difference. Result has 73 places, 40 transitions, 223 flow [2021-03-24 19:57:54,276 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2021-03-24 19:57:54,276 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2021-03-24 19:57:54,276 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 223 flow [2021-03-24 19:57:54,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:54,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:54,277 INFO L263 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] [2021-03-24 19:57:54,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 19:57:54,277 INFO L428 AbstractCegarLoop]: === Iteration 18 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1182779030, now seen corresponding path program 1 times [2021-03-24 19:57:54,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:54,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485197830] [2021-03-24 19:57:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:54,328 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:54,366 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:54,403 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 19:57:54,403 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 19:57:54,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 19:57:54,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:57:54 BasicIcfg [2021-03-24 19:57:54,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:57:54,502 INFO L168 Benchmark]: Toolchain (without parser) took 15521.36 ms. Allocated memory was 255.9 MB in the beginning and 576.7 MB in the end (delta: 320.9 MB). Free memory was 234.9 MB in the beginning and 398.1 MB in the end (delta: -163.2 MB). Peak memory consumption was 157.3 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,505 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:57:54,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 494.48 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.5 MB in the beginning and 315.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,506 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.87 ms. Allocated memory is still 352.3 MB. Free memory was 315.4 MB in the beginning and 312.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,506 INFO L168 Benchmark]: Boogie Preprocessor took 27.10 ms. Allocated memory is still 352.3 MB. Free memory was 312.4 MB in the beginning and 310.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,506 INFO L168 Benchmark]: RCFGBuilder took 1561.31 ms. Allocated memory is still 352.3 MB. Free memory was 310.3 MB in the beginning and 229.6 MB in the end (delta: 80.7 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,506 INFO L168 Benchmark]: TraceAbstraction took 13364.97 ms. Allocated memory was 352.3 MB in the beginning and 576.7 MB in the end (delta: 224.4 MB). Free memory was 229.6 MB in the beginning and 398.1 MB in the end (delta: -168.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:54,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 494.48 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 234.5 MB in the beginning and 315.4 MB in the end (delta: -80.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 68.87 ms. Allocated memory is still 352.3 MB. Free memory was 315.4 MB in the beginning and 312.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.10 ms. Allocated memory is still 352.3 MB. Free memory was 312.4 MB in the beginning and 310.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1561.31 ms. Allocated memory is still 352.3 MB. Free memory was 310.3 MB in the beginning and 229.6 MB in the end (delta: 80.7 MB). Peak memory consumption was 85.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 13364.97 ms. Allocated memory was 352.3 MB in the beginning and 576.7 MB in the end (delta: 224.4 MB). Free memory was 229.6 MB in the beginning and 398.1 MB in the end (delta: -168.4 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7725.8ms, 101 PlacesBefore, 46 PlacesAfterwards, 93 TransitionsBefore, 37 TransitionsAfterwards, 1578 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 2611 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1403, positive: 1332, positive conditional: 0, positive unconditional: 1332, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1049, positive: 1010, positive conditional: 0, positive unconditional: 1010, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1049, positive: 1010, positive conditional: 0, positive unconditional: 1010, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1049, positive: 1007, positive conditional: 0, positive unconditional: 1007, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 648, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 641, negative conditional: 0, negative unconditional: 641, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1403, positive: 322, positive conditional: 0, positive unconditional: 322, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 1049, unknown conditional: 0, unknown unconditional: 1049] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0] [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0] [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0] [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0] [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2522; [L816] FCALL, FORK 0 pthread_create(&t2522, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t2523; [L818] FCALL, FORK 0 pthread_create(&t2523, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L819] 0 pthread_t t2524; [L820] FCALL, FORK 0 pthread_create(&t2524, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L778] 3 y$w_buff1 = y$w_buff0 [L779] 3 y$w_buff0 = 2 [L780] 3 y$w_buff1_used = y$w_buff0_used [L781] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L783] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L784] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L785] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L786] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L787] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L790] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L741] 1 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L746] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L758] 2 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L761] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L793] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L794] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L795] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L796] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L796] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L797] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L797] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L764] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L764] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L765] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L766] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L767] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L767] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L768] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 2 return 0; [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L753] 1 return 0; [L800] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L802] 3 return 0; [L822] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L826] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L826] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L827] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L828] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L829] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L829] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L830] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L830] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L833] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L834] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L835] 0 y$flush_delayed = weak$$choice2 [L836] 0 y$mem_tmp = y [L837] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L837] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L838] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L838] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L839] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L840] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L840] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L841] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L842] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L843] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L843] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 main$tmp_guard1 = !(y == 2 && z == 2 && __unbuffered_p0_EAX == 0) [L845] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L845] 0 y = y$flush_delayed ? y$mem_tmp : y [L846] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=1, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 13160.9ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2706.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7823.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 126 SDtfs, 218 SDslu, 188 SDs, 0 SdLazy, 759 SolverSat, 247 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 780.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1252.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=482occurred in iteration=12, InterpolantAutomatonStates: 142, 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: 56.6ms SsaConstructionTime, 505.8ms SatisfiabilityAnalysisTime, 1731.2ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 2470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...