/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:38:31,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:38:31,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:38:31,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:38:31,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:38:31,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:38:31,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:38:31,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:38:31,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:38:31,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:38:31,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:38:31,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:38:31,777 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:38:31,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:38:31,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:38:31,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:38:31,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:38:31,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:38:31,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:38:31,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:38:31,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:38:31,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:38:31,780 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:38:31,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:38:31,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:38:31,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:38:31,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:38:31,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:38:31,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:38:31,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:38:31,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:38:31,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:38:31,782 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:38:32,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:38:32,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:38:32,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:38:32,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:38:32,114 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:38:32,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2021-03-11 02:38:32,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fe6102eb/f9c33ae34ea44aa9ab933fd61b7dcf72/FLAG1f6742f51 [2021-03-11 02:38:32,674 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:38:32,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2021-03-11 02:38:32,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fe6102eb/f9c33ae34ea44aa9ab933fd61b7dcf72/FLAG1f6742f51 [2021-03-11 02:38:33,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fe6102eb/f9c33ae34ea44aa9ab933fd61b7dcf72 [2021-03-11 02:38:33,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:38:33,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:38:33,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:38:33,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:38:33,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:38:33,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@572b1dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33, skipping insertion in model container [2021-03-11 02:38:33,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:38:33,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:38:33,435 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/safe034_tso.opt.i[949,962] [2021-03-11 02:38:33,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:38:33,616 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:38:33,626 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/safe034_tso.opt.i[949,962] [2021-03-11 02:38:33,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:38:33,732 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:38:33,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33 WrapperNode [2021-03-11 02:38:33,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:38:33,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:38:33,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:38:33,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:38:33,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:38:33,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:38:33,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:38:33,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:38:33,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... [2021-03-11 02:38:33,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:38:33,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:38:33,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:38:33,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:38:33,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:38:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:38:33,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:38:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:38:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:38:33,907 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:38:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:38:33,908 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:38:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:38:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:38:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:38:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:38:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:38:33,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:38:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:38:33,910 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:38:34,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:38:34,218 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:38:34,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:38:34 BoogieIcfgContainer [2021-03-11 02:38:34,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:38:34,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:38:34,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:38:34,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:38:34,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:38:33" (1/3) ... [2021-03-11 02:38:34,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c433cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:38:34, skipping insertion in model container [2021-03-11 02:38:34,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:38:33" (2/3) ... [2021-03-11 02:38:34,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c433cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:38:34, skipping insertion in model container [2021-03-11 02:38:34,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:38:34" (3/3) ... [2021-03-11 02:38:34,226 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2021-03-11 02:38:34,230 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:38:34,234 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:38:34,235 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:38:34,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,262 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,264 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,264 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,265 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,268 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,269 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,269 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,270 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,271 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,271 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,271 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:38:34,272 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:38:34,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:38:34,303 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:38:34,303 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:38:34,303 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:38:34,303 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:38:34,303 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:38:34,303 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:38:34,304 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:38:34,304 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:38:34,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:38:34,344 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:38:34,344 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:34,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:38:34,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:38:34,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:38:34,382 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:38:34,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:34,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:34,383 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:34,384 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:34,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2092073770, now seen corresponding path program 1 times [2021-03-11 02:38:34,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:34,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684111900] [2021-03-11 02:38:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:34,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:34,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:34,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:34,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:34,643 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:34,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:34,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:34,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:34,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:34,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:34,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:34,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:34,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684111900] [2021-03-11 02:38:34,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:34,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:38:34,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205759133] [2021-03-11 02:38:34,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:38:34,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:38:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:38:34,745 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 75 [2021-03-11 02:38:34,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:34,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:34,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 75 [2021-03-11 02:38:34,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:34,932 INFO L129 PetriNetUnfolder]: 24/134 cut-off events. [2021-03-11 02:38:34,932 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:38:34,933 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 134 events. 24/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 427 event pairs, 5 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 176. Up to 31 conditions per place. [2021-03-11 02:38:34,935 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 8 selfloop transitions, 3 changer transitions 19/80 dead transitions. [2021-03-11 02:38:34,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 229 flow [2021-03-11 02:38:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:38:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:38:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 592 transitions. [2021-03-11 02:38:34,952 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8770370370370371 [2021-03-11 02:38:34,952 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 592 transitions. [2021-03-11 02:38:34,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 592 transitions. [2021-03-11 02:38:34,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:34,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 592 transitions. [2021-03-11 02:38:34,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 65.77777777777777) internal successors, (592), 9 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:34,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:34,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:34,967 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 9 states and 592 transitions. [2021-03-11 02:38:34,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 229 flow [2021-03-11 02:38:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:38:34,974 INFO L241 Difference]: Finished difference. Result has 81 places, 61 transitions, 167 flow [2021-03-11 02:38:34,975 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2021-03-11 02:38:34,976 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 12 predicate places. [2021-03-11 02:38:34,976 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 167 flow [2021-03-11 02:38:34,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:34,977 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:34,977 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:34,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:38:34,977 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:34,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:34,978 INFO L82 PathProgramCache]: Analyzing trace with hash -2093227861, now seen corresponding path program 1 times [2021-03-11 02:38:34,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:34,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908967677] [2021-03-11 02:38:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:35,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:35,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,070 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:35,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:35,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:35,123 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:35,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:35,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:35,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908967677] [2021-03-11 02:38:35,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:35,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:38:35,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26198496] [2021-03-11 02:38:35,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:38:35,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:35,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:38:35,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:38:35,144 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:35,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:35,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:35,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:35,393 INFO L129 PetriNetUnfolder]: 166/440 cut-off events. [2021-03-11 02:38:35,393 INFO L130 PetriNetUnfolder]: For 196/196 co-relation queries the response was YES. [2021-03-11 02:38:35,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 440 events. 166/440 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2516 event pairs, 14 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 877. Up to 104 conditions per place. [2021-03-11 02:38:35,401 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 21 selfloop transitions, 15 changer transitions 5/91 dead transitions. [2021-03-11 02:38:35,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 91 transitions, 309 flow [2021-03-11 02:38:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:38:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:38:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-03-11 02:38:35,404 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-03-11 02:38:35,404 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-03-11 02:38:35,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-03-11 02:38:35,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:35,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-03-11 02:38:35,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,409 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,409 INFO L185 Difference]: Start difference. First operand has 81 places, 61 transitions, 167 flow. Second operand 10 states and 653 transitions. [2021-03-11 02:38:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 91 transitions, 309 flow [2021-03-11 02:38:35,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 91 transitions, 300 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-11 02:38:35,416 INFO L241 Difference]: Finished difference. Result has 86 places, 74 transitions, 267 flow [2021-03-11 02:38:35,416 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=267, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2021-03-11 02:38:35,416 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 17 predicate places. [2021-03-11 02:38:35,416 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 267 flow [2021-03-11 02:38:35,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,417 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:35,417 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:35,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:38:35,417 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1997653096, now seen corresponding path program 1 times [2021-03-11 02:38:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:35,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564737395] [2021-03-11 02:38:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:35,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:35,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,525 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:35,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:35,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:35,555 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:35,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:35,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:35,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:35,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564737395] [2021-03-11 02:38:35,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:35,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:35,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870800743] [2021-03-11 02:38:35,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:35,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:35,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:35,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:35,570 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:35,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:35,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:35,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:35,815 INFO L129 PetriNetUnfolder]: 146/409 cut-off events. [2021-03-11 02:38:35,815 INFO L130 PetriNetUnfolder]: For 908/974 co-relation queries the response was YES. [2021-03-11 02:38:35,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 409 events. 146/409 cut-off events. For 908/974 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2307 event pairs, 4 based on Foata normal form. 27/418 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2021-03-11 02:38:35,822 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 20 selfloop transitions, 28 changer transitions 11/109 dead transitions. [2021-03-11 02:38:35,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 109 transitions, 609 flow [2021-03-11 02:38:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:38:35,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:38:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 848 transitions. [2021-03-11 02:38:35,828 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8697435897435898 [2021-03-11 02:38:35,832 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 848 transitions. [2021-03-11 02:38:35,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 848 transitions. [2021-03-11 02:38:35,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:35,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 848 transitions. [2021-03-11 02:38:35,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.23076923076923) internal successors, (848), 13 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,839 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,839 INFO L185 Difference]: Start difference. First operand has 86 places, 74 transitions, 267 flow. Second operand 13 states and 848 transitions. [2021-03-11 02:38:35,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 109 transitions, 609 flow [2021-03-11 02:38:35,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 109 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 02:38:35,848 INFO L241 Difference]: Finished difference. Result has 103 places, 91 transitions, 491 flow [2021-03-11 02:38:35,848 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=491, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2021-03-11 02:38:35,848 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 34 predicate places. [2021-03-11 02:38:35,848 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 491 flow [2021-03-11 02:38:35,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:35,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:35,849 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:35,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:38:35,849 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:35,850 INFO L82 PathProgramCache]: Analyzing trace with hash 205922990, now seen corresponding path program 1 times [2021-03-11 02:38:35,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:35,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843042064] [2021-03-11 02:38:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:35,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:35,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:35,973 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:38:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:38:35,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:35,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:38:36,002 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:38:36,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:36,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:36,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843042064] [2021-03-11 02:38:36,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:36,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:38:36,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66606000] [2021-03-11 02:38:36,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:38:36,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:36,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:38:36,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:38:36,020 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:38:36,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 491 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:36,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:38:36,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:36,302 INFO L129 PetriNetUnfolder]: 99/335 cut-off events. [2021-03-11 02:38:36,302 INFO L130 PetriNetUnfolder]: For 1433/1517 co-relation queries the response was YES. [2021-03-11 02:38:36,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 335 events. 99/335 cut-off events. For 1433/1517 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1984 event pairs, 0 based on Foata normal form. 27/345 useless extension candidates. Maximal degree in co-relation 1373. Up to 112 conditions per place. [2021-03-11 02:38:36,306 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 16 selfloop transitions, 32 changer transitions 19/117 dead transitions. [2021-03-11 02:38:36,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 807 flow [2021-03-11 02:38:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-11 02:38:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-11 02:38:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1028 transitions. [2021-03-11 02:38:36,309 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8566666666666667 [2021-03-11 02:38:36,309 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1028 transitions. [2021-03-11 02:38:36,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1028 transitions. [2021-03-11 02:38:36,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:36,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1028 transitions. [2021-03-11 02:38:36,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 64.25) internal successors, (1028), 16 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,314 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 75.0) internal successors, (1275), 17 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,314 INFO L185 Difference]: Start difference. First operand has 103 places, 91 transitions, 491 flow. Second operand 16 states and 1028 transitions. [2021-03-11 02:38:36,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 807 flow [2021-03-11 02:38:36,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 719 flow, removed 37 selfloop flow, removed 7 redundant places. [2021-03-11 02:38:36,326 INFO L241 Difference]: Finished difference. Result has 118 places, 92 transitions, 517 flow [2021-03-11 02:38:36,326 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=517, PETRI_PLACES=118, PETRI_TRANSITIONS=92} [2021-03-11 02:38:36,326 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2021-03-11 02:38:36,326 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 92 transitions, 517 flow [2021-03-11 02:38:36,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,327 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:36,327 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:36,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:38:36,327 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash -354085076, now seen corresponding path program 1 times [2021-03-11 02:38:36,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:36,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300904948] [2021-03-11 02:38:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:36,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:36,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:36,385 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:36,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:36,393 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:36,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:36,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:36,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:36,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:36,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300904948] [2021-03-11 02:38:36,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:36,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:36,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38292295] [2021-03-11 02:38:36,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:36,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:36,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:36,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:36,434 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:38:36,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 92 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:36,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:38:36,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:36,630 INFO L129 PetriNetUnfolder]: 175/883 cut-off events. [2021-03-11 02:38:36,630 INFO L130 PetriNetUnfolder]: For 2102/2193 co-relation queries the response was YES. [2021-03-11 02:38:36,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 883 events. 175/883 cut-off events. For 2102/2193 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8285 event pairs, 0 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 2816. Up to 125 conditions per place. [2021-03-11 02:38:36,639 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 17 selfloop transitions, 13 changer transitions 4/109 dead transitions. [2021-03-11 02:38:36,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 635 flow [2021-03-11 02:38:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:38:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:38:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 478 transitions. [2021-03-11 02:38:36,641 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2021-03-11 02:38:36,641 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 478 transitions. [2021-03-11 02:38:36,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 478 transitions. [2021-03-11 02:38:36,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:36,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 478 transitions. [2021-03-11 02:38:36,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.75) internal successors, (478), 8 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,647 INFO L185 Difference]: Start difference. First operand has 118 places, 92 transitions, 517 flow. Second operand 8 states and 478 transitions. [2021-03-11 02:38:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 635 flow [2021-03-11 02:38:36,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 109 transitions, 538 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-03-11 02:38:36,667 INFO L241 Difference]: Finished difference. Result has 113 places, 103 transitions, 524 flow [2021-03-11 02:38:36,667 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2021-03-11 02:38:36,668 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-03-11 02:38:36,668 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 524 flow [2021-03-11 02:38:36,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,668 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:36,668 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:36,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:38:36,669 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:36,669 INFO L82 PathProgramCache]: Analyzing trace with hash -188645648, now seen corresponding path program 2 times [2021-03-11 02:38:36,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:36,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921045465] [2021-03-11 02:38:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:36,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:36,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:36,733 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:36,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:36,743 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:36,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:36,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:36,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:36,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:36,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:36,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921045465] [2021-03-11 02:38:36,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:36,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:36,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922837793] [2021-03-11 02:38:36,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:36,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:36,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:36,784 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 75 [2021-03-11 02:38:36,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 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) [2021-03-11 02:38:36,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:36,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 75 [2021-03-11 02:38:36,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:36,948 INFO L129 PetriNetUnfolder]: 219/1094 cut-off events. [2021-03-11 02:38:36,948 INFO L130 PetriNetUnfolder]: For 1527/1686 co-relation queries the response was YES. [2021-03-11 02:38:36,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1094 events. 219/1094 cut-off events. For 1527/1686 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10940 event pairs, 0 based on Foata normal form. 7/1040 useless extension candidates. Maximal degree in co-relation 3049. Up to 132 conditions per place. [2021-03-11 02:38:36,956 INFO L132 encePairwiseOnDemand]: 67/75 looper letters, 13 selfloop transitions, 5 changer transitions 20/112 dead transitions. [2021-03-11 02:38:36,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 634 flow [2021-03-11 02:38:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:38:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:38:36,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 430 transitions. [2021-03-11 02:38:36,958 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-03-11 02:38:36,958 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 430 transitions. [2021-03-11 02:38:36,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 430 transitions. [2021-03-11 02:38:36,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:36,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 430 transitions. [2021-03-11 02:38:36,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.42857142857143) internal successors, (430), 7 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 75.0) internal successors, (600), 8 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:36,961 INFO L185 Difference]: Start difference. First operand has 113 places, 103 transitions, 524 flow. Second operand 7 states and 430 transitions. [2021-03-11 02:38:36,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 634 flow [2021-03-11 02:38:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 622 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-11 02:38:36,988 INFO L241 Difference]: Finished difference. Result has 118 places, 91 transitions, 463 flow [2021-03-11 02:38:36,989 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=118, PETRI_TRANSITIONS=91} [2021-03-11 02:38:36,989 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2021-03-11 02:38:36,989 INFO L480 AbstractCegarLoop]: Abstraction has has 118 places, 91 transitions, 463 flow [2021-03-11 02:38:36,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 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) [2021-03-11 02:38:36,989 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:38:36,989 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:38:36,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:38:36,990 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:38:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:38:36,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1005020640, now seen corresponding path program 3 times [2021-03-11 02:38:36,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:38:36,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130464778] [2021-03-11 02:38:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:38:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:38:37,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:37,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:37,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:37,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:38:37,050 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:38:37,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:38:37,060 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:38:37,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:38:37,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:37,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:37,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:37,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:38:37,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:38:37,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:38:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:38:37,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130464778] [2021-03-11 02:38:37,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:38:37,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:38:37,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300891567] [2021-03-11 02:38:37,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:38:37,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:38:37,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:38:37,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:38:37,102 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:38:37,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 91 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:37,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:38:37,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:38:37,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:38:37,240 INFO L129 PetriNetUnfolder]: 65/435 cut-off events. [2021-03-11 02:38:37,240 INFO L130 PetriNetUnfolder]: For 645/657 co-relation queries the response was YES. [2021-03-11 02:38:37,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 435 events. 65/435 cut-off events. For 645/657 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3292 event pairs, 0 based on Foata normal form. 3/421 useless extension candidates. Maximal degree in co-relation 1209. Up to 60 conditions per place. [2021-03-11 02:38:37,245 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2021-03-11 02:38:37,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 91 transitions, 511 flow [2021-03-11 02:38:37,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:38:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:38:37,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 465 transitions. [2021-03-11 02:38:37,247 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-03-11 02:38:37,247 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 465 transitions. [2021-03-11 02:38:37,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 465 transitions. [2021-03-11 02:38:37,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:38:37,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 465 transitions. [2021-03-11 02:38:37,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.125) internal successors, (465), 8 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:37,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:37,250 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:37,251 INFO L185 Difference]: Start difference. First operand has 118 places, 91 transitions, 463 flow. Second operand 8 states and 465 transitions. [2021-03-11 02:38:37,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 91 transitions, 511 flow [2021-03-11 02:38:37,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 91 transitions, 478 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-11 02:38:37,259 INFO L241 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2021-03-11 02:38:37,260 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2021-03-11 02:38:37,260 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2021-03-11 02:38:37,260 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2021-03-11 02:38:37,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:38:37,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:38:37,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:38:37 BasicIcfg [2021-03-11 02:38:37,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:38:37,268 INFO L168 Benchmark]: Toolchain (without parser) took 4059.68 ms. Allocated memory was 255.9 MB in the beginning and 425.7 MB in the end (delta: 169.9 MB). Free memory was 234.1 MB in the beginning and 381.5 MB in the end (delta: -147.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:37,270 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:38:37,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.36 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.6 MB in the beginning and 316.1 MB in the end (delta: -82.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:37,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.27 ms. Allocated memory is still 354.4 MB. Free memory was 316.1 MB in the beginning and 314.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:37,272 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 312.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:38:37,274 INFO L168 Benchmark]: RCFGBuilder took 398.85 ms. Allocated memory is still 354.4 MB. Free memory was 312.7 MB in the beginning and 291.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:38:37,274 INFO L168 Benchmark]: TraceAbstraction took 3043.36 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 291.0 MB in the beginning and 381.5 MB in the end (delta: -90.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:38:37,283 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 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 525.36 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.6 MB in the beginning and 316.1 MB in the end (delta: -82.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.27 ms. Allocated memory is still 354.4 MB. Free memory was 316.1 MB in the beginning and 314.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 354.4 MB. Free memory was 314.0 MB in the beginning and 312.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 398.85 ms. Allocated memory is still 354.4 MB. Free memory was 312.7 MB in the beginning and 291.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3043.36 ms. Allocated memory was 354.4 MB in the beginning and 425.7 MB in the end (delta: 71.3 MB). Free memory was 291.0 MB in the beginning and 381.5 MB in the end (delta: -90.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 31.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2961.8ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1701.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 73 SDtfs, 179 SDslu, 257 SDs, 0 SdLazy, 279 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 235.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 897.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=524occurred in iteration=5, InterpolantAutomatonStates: 71, 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: 27.3ms SsaConstructionTime, 183.4ms SatisfiabilityAnalysisTime, 818.6ms InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...