/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:08:47,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:08:47,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:08:47,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 05:08:47,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 05:08:47,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 05:08:47,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 05:08:47,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 05:08:47,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 05:08:47,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 05:08:47,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 05:08:47,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 05:08:47,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:08:47,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:08:47,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:08:47,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:08:47,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:08:47,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:08:47,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:08:47,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:08:47,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:08:47,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:08:47,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:08:47,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:08:47,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:08:47,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 05:08:47,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 05:08:47,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 05:08:47,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 05:08:47,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 05:08:47,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 05:08:47,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 05:08:47,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 05:08:47,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:08:47,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:08:47,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:08:47,825 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-RepeatedVariableLbe.epf [2021-03-25 05:08:47,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:08:47,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:08:47,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:08:47,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:08:47,868 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:08:47,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:08:47,868 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:08:47,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:08:47,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:08:47,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:08:47,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:08:47,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:08:47,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:08:47,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:08:47,872 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:08:48,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:08:48,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:08:48,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:08:48,214 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:08:48,217 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:08:48,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-03-25 05:08:48,276 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b176e975/d031d042696c474895e5335ccc557774/FLAG6239e4e61 [2021-03-25 05:08:48,844 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:08:48,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i [2021-03-25 05:08:48,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b176e975/d031d042696c474895e5335ccc557774/FLAG6239e4e61 [2021-03-25 05:08:49,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b176e975/d031d042696c474895e5335ccc557774 [2021-03-25 05:08:49,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:08:49,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:08:49,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:08:49,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:08:49,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:08:49,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79acfca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49, skipping insertion in model container [2021-03-25 05:08:49,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:08:49,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:08:49,355 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i[949,962] [2021-03-25 05:08:49,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:08:49,536 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:08:49,547 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_tso.opt.i[949,962] [2021-03-25 05:08:49,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:08:49,631 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:08:49,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49 WrapperNode [2021-03-25 05:08:49,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:08:49,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:08:49,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:08:49,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:08:49,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:08:49,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:08:49,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:08:49,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:08:49,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (1/1) ... [2021-03-25 05:08:49,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:08:49,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:08:49,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:08:49,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:08:49,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (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 [2021-03-25 05:08:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:08:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:08:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:08:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:08:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:08:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:08:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:08:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:08:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:08:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:08:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:08:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:08:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:08:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:08:49,804 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:08:50,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:08:50,201 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:08:50,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:08:50 BoogieIcfgContainer [2021-03-25 05:08:50,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:08:50,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:08:50,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:08:50,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:08:50,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:08:49" (1/3) ... [2021-03-25 05:08:50,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5dee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:08:50, skipping insertion in model container [2021-03-25 05:08:50,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:08:49" (2/3) ... [2021-03-25 05:08:50,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5dee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:08:50, skipping insertion in model container [2021-03-25 05:08:50,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:08:50" (3/3) ... [2021-03-25 05:08:50,208 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_tso.opt.i [2021-03-25 05:08:50,213 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:08:50,217 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:08:50,218 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:08:50,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,249 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,250 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,250 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,251 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,251 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,252 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,252 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,253 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,254 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,254 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,256 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,256 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,257 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,257 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,258 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,260 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,266 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,267 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,267 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,273 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,273 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,274 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:08:50,280 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:08:50,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:08:50,326 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:08:50,326 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:08:50,326 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:08:50,326 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:08:50,326 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:08:50,326 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:08:50,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:08:50,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:08:50,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:08:50,383 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-25 05:08:50,383 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:50,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-25 05:08:50,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-25 05:08:50,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-25 05:08:50,396 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:50,403 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:08:50,406 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 59 transitions, 127 flow [2021-03-25 05:08:50,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 59 transitions, 127 flow [2021-03-25 05:08:50,429 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-25 05:08:50,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:50,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-25 05:08:50,432 INFO L142 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-25 05:08:51,909 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-03-25 05:08:52,086 INFO L154 LiptonReduction]: Checked pairs total: 887 [2021-03-25 05:08:52,086 INFO L156 LiptonReduction]: Total number of compositions: 39 [2021-03-25 05:08:52,088 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1693 [2021-03-25 05:08:52,095 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:08:52,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:52,096 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:52,096 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:52,096 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:52,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:52,100 INFO L82 PathProgramCache]: Analyzing trace with hash 191965875, now seen corresponding path program 1 times [2021-03-25 05:08:52,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:52,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941948139] [2021-03-25 05:08:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:52,301 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:08:52,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:08:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:52,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941948139] [2021-03-25 05:08:52,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:52,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:08:52,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318844419] [2021-03-25 05:08:52,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:08:52,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:52,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:08:52,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:08:52,345 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 113 [2021-03-25 05:08:52,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 05:08:52,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:52,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 113 [2021-03-25 05:08:52,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:52,377 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-25 05:08:52,377 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:52,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 64 event pairs, 3 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 52. Up to 18 conditions per place. [2021-03-25 05:08:52,379 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 4 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-25 05:08:52,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 67 flow [2021-03-25 05:08:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:08:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:08:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2021-03-25 05:08:52,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.855457227138643 [2021-03-25 05:08:52,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2021-03-25 05:08:52,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2021-03-25 05:08:52,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:52,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2021-03-25 05:08:52,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:52,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-25 05:08:52,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2021-03-25 05:08:52,413 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 49 flow. Second operand 3 states and 290 transitions. [2021-03-25 05:08:52,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 67 flow [2021-03-25 05:08:52,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 64 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:08:52,417 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 65 flow [2021-03-25 05:08:52,418 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-03-25 05:08:52,419 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-25 05:08:52,419 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:52,419 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-25 05:08:52,420 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 22 transitions, 65 flow [2021-03-25 05:08:52,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 22 transitions, 65 flow [2021-03-25 05:08:52,429 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 05:08:52,429 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:52,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 30 events. 3/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 1 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 40. Up to 10 conditions per place. [2021-03-25 05:08:52,431 INFO L142 LiptonReduction]: Number of co-enabled transitions 132 [2021-03-25 05:08:52,863 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:08:53,071 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:08:53,141 INFO L154 LiptonReduction]: Checked pairs total: 274 [2021-03-25 05:08:53,141 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:08:53,141 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 722 [2021-03-25 05:08:53,142 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2021-03-25 05:08:53,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 05:08:53,142 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,142 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:08:53,143 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1655421042, now seen corresponding path program 1 times [2021-03-25 05:08:53,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492458246] [2021-03-25 05:08:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:53,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,228 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:08:53,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:08:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492458246] [2021-03-25 05:08:53,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:53,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467799949] [2021-03-25 05:08:53,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:53,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:53,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:53,238 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 117 [2021-03-25 05:08:53,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-25 05:08:53,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 117 [2021-03-25 05:08:53,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,288 INFO L129 PetriNetUnfolder]: 24/69 cut-off events. [2021-03-25 05:08:53,288 INFO L130 PetriNetUnfolder]: For 18/28 co-relation queries the response was YES. [2021-03-25 05:08:53,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 69 events. 24/69 cut-off events. For 18/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 227 event pairs, 2 based on Foata normal form. 8/77 useless extension candidates. Maximal degree in co-relation 149. Up to 30 conditions per place. [2021-03-25 05:08:53,290 INFO L132 encePairwiseOnDemand]: 111/117 looper letters, 8 selfloop transitions, 11 changer transitions 0/29 dead transitions. [2021-03-25 05:08:53,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 133 flow [2021-03-25 05:08:53,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:08:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:08:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2021-03-25 05:08:53,292 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8102564102564103 [2021-03-25 05:08:53,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2021-03-25 05:08:53,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2021-03-25 05:08:53,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2021-03-25 05:08:53,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2021-03-25 05:08:53,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-25 05:08:53,298 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-25 05:08:53,298 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 5 states and 474 transitions. [2021-03-25 05:08:53,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 133 flow [2021-03-25 05:08:53,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 29 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:08:53,301 INFO L241 Difference]: Finished difference. Result has 32 places, 26 transitions, 134 flow [2021-03-25 05:08:53,302 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2021-03-25 05:08:53,302 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-03-25 05:08:53,302 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,302 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 26 transitions, 134 flow [2021-03-25 05:08:53,303 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 26 transitions, 134 flow [2021-03-25 05:08:53,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 26 transitions, 134 flow [2021-03-25 05:08:53,315 INFO L129 PetriNetUnfolder]: 16/64 cut-off events. [2021-03-25 05:08:53,315 INFO L130 PetriNetUnfolder]: For 43/55 co-relation queries the response was YES. [2021-03-25 05:08:53,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 64 events. 16/64 cut-off events. For 43/55 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 228 event pairs, 1 based on Foata normal form. 1/64 useless extension candidates. Maximal degree in co-relation 166. Up to 26 conditions per place. [2021-03-25 05:08:53,319 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-25 05:08:53,322 INFO L154 LiptonReduction]: Checked pairs total: 148 [2021-03-25 05:08:53,323 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:53,323 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-25 05:08:53,324 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 134 flow [2021-03-25 05:08:53,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-25 05:08:53,325 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,325 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:08:53,325 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1972715479, now seen corresponding path program 1 times [2021-03-25 05:08:53,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609082480] [2021-03-25 05:08:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609082480] [2021-03-25 05:08:53,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 05:08:53,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175406028] [2021-03-25 05:08:53,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:08:53,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:08:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:08:53,403 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 117 [2021-03-25 05:08:53,403 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:08:53,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 117 [2021-03-25 05:08:53,404 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,419 INFO L129 PetriNetUnfolder]: 17/56 cut-off events. [2021-03-25 05:08:53,419 INFO L130 PetriNetUnfolder]: For 75/84 co-relation queries the response was YES. [2021-03-25 05:08:53,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 56 events. 17/56 cut-off events. For 75/84 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 166 event pairs, 1 based on Foata normal form. 3/59 useless extension candidates. Maximal degree in co-relation 164. Up to 27 conditions per place. [2021-03-25 05:08:53,420 INFO L132 encePairwiseOnDemand]: 114/117 looper letters, 1 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 05:08:53,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 146 flow [2021-03-25 05:08:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:08:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:08:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-25 05:08:53,422 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8746438746438746 [2021-03-25 05:08:53,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-25 05:08:53,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-25 05:08:53,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-25 05:08:53,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2021-03-25 05:08:53,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,425 INFO L185 Difference]: Start difference. First operand has 32 places, 26 transitions, 134 flow. Second operand 3 states and 307 transitions. [2021-03-25 05:08:53,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 146 flow [2021-03-25 05:08:53,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:08:53,427 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 145 flow [2021-03-25 05:08:53,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-03-25 05:08:53,428 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-03-25 05:08:53,428 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,428 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 26 transitions, 145 flow [2021-03-25 05:08:53,429 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 26 transitions, 145 flow [2021-03-25 05:08:53,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 26 transitions, 145 flow [2021-03-25 05:08:53,436 INFO L129 PetriNetUnfolder]: 14/58 cut-off events. [2021-03-25 05:08:53,436 INFO L130 PetriNetUnfolder]: For 52/58 co-relation queries the response was YES. [2021-03-25 05:08:53,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 58 events. 14/58 cut-off events. For 52/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 180 event pairs, 4 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 153. Up to 25 conditions per place. [2021-03-25 05:08:53,439 INFO L142 LiptonReduction]: Number of co-enabled transitions 146 [2021-03-25 05:08:53,441 INFO L154 LiptonReduction]: Checked pairs total: 113 [2021-03-25 05:08:53,441 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:53,441 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 05:08:53,443 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 145 flow [2021-03-25 05:08:53,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-25 05:08:53,443 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,443 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:08:53,444 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1041302113, now seen corresponding path program 1 times [2021-03-25 05:08:53,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860533600] [2021-03-25 05:08:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860533600] [2021-03-25 05:08:53,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:08:53,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220891418] [2021-03-25 05:08:53,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:08:53,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:08:53,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:08:53,521 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 05:08:53,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 05:08:53,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 05:08:53,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,538 INFO L129 PetriNetUnfolder]: 42/112 cut-off events. [2021-03-25 05:08:53,539 INFO L130 PetriNetUnfolder]: For 132/142 co-relation queries the response was YES. [2021-03-25 05:08:53,539 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 112 events. 42/112 cut-off events. For 132/142 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 474 event pairs, 9 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2021-03-25 05:08:53,540 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2021-03-25 05:08:53,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 167 flow [2021-03-25 05:08:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:08:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:08:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2021-03-25 05:08:53,541 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-25 05:08:53,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2021-03-25 05:08:53,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2021-03-25 05:08:53,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2021-03-25 05:08:53,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2021-03-25 05:08:53,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,544 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 145 flow. Second operand 3 states and 291 transitions. [2021-03-25 05:08:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 167 flow [2021-03-25 05:08:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 05:08:53,546 INFO L241 Difference]: Finished difference. Result has 35 places, 29 transitions, 161 flow [2021-03-25 05:08:53,546 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2021-03-25 05:08:53,546 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2021-03-25 05:08:53,546 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,547 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 29 transitions, 161 flow [2021-03-25 05:08:53,547 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 29 transitions, 161 flow [2021-03-25 05:08:53,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 161 flow [2021-03-25 05:08:53,556 INFO L129 PetriNetUnfolder]: 56/133 cut-off events. [2021-03-25 05:08:53,556 INFO L130 PetriNetUnfolder]: For 88/100 co-relation queries the response was YES. [2021-03-25 05:08:53,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 133 events. 56/133 cut-off events. For 88/100 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 568 event pairs, 16 based on Foata normal form. 2/126 useless extension candidates. Maximal degree in co-relation 345. Up to 85 conditions per place. [2021-03-25 05:08:53,558 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-25 05:08:53,560 INFO L154 LiptonReduction]: Checked pairs total: 51 [2021-03-25 05:08:53,560 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:53,560 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 05:08:53,561 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 161 flow [2021-03-25 05:08:53,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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) [2021-03-25 05:08:53,561 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,561 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:08:53,562 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2043845932, now seen corresponding path program 1 times [2021-03-25 05:08:53,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664890935] [2021-03-25 05:08:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664890935] [2021-03-25 05:08:53,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:53,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062465385] [2021-03-25 05:08:53,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:53,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:53,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:53,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 05:08:53,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 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) [2021-03-25 05:08:53,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 05:08:53,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,636 INFO L129 PetriNetUnfolder]: 24/75 cut-off events. [2021-03-25 05:08:53,637 INFO L130 PetriNetUnfolder]: For 79/100 co-relation queries the response was YES. [2021-03-25 05:08:53,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 75 events. 24/75 cut-off events. For 79/100 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 231 event pairs, 1 based on Foata normal form. 21/95 useless extension candidates. Maximal degree in co-relation 240. Up to 36 conditions per place. [2021-03-25 05:08:53,638 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 4 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2021-03-25 05:08:53,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 195 flow [2021-03-25 05:08:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2021-03-25 05:08:53,639 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8290598290598291 [2021-03-25 05:08:53,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2021-03-25 05:08:53,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2021-03-25 05:08:53,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2021-03-25 05:08:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-25 05:08:53,642 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 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) [2021-03-25 05:08:53,642 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 161 flow. Second operand 4 states and 388 transitions. [2021-03-25 05:08:53,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 195 flow [2021-03-25 05:08:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 05:08:53,646 INFO L241 Difference]: Finished difference. Result has 38 places, 32 transitions, 197 flow [2021-03-25 05:08:53,647 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2021-03-25 05:08:53,647 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2021-03-25 05:08:53,647 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,647 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 197 flow [2021-03-25 05:08:53,647 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 197 flow [2021-03-25 05:08:53,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 197 flow [2021-03-25 05:08:53,655 INFO L129 PetriNetUnfolder]: 33/90 cut-off events. [2021-03-25 05:08:53,655 INFO L130 PetriNetUnfolder]: For 121/140 co-relation queries the response was YES. [2021-03-25 05:08:53,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 90 events. 33/90 cut-off events. For 121/140 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 299 event pairs, 3 based on Foata normal form. 8/95 useless extension candidates. Maximal degree in co-relation 297. Up to 50 conditions per place. [2021-03-25 05:08:53,657 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-25 05:08:53,659 INFO L154 LiptonReduction]: Checked pairs total: 51 [2021-03-25 05:08:53,659 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:53,659 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 05:08:53,659 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 197 flow [2021-03-25 05:08:53,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 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) [2021-03-25 05:08:53,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,660 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:08:53,660 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,661 INFO L82 PathProgramCache]: Analyzing trace with hash -946362657, now seen corresponding path program 1 times [2021-03-25 05:08:53,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039363789] [2021-03-25 05:08:53,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039363789] [2021-03-25 05:08:53,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:08:53,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057185294] [2021-03-25 05:08:53,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:08:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:08:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:08:53,723 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 117 [2021-03-25 05:08:53,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2021-03-25 05:08:53,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,724 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 117 [2021-03-25 05:08:53,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,755 INFO L129 PetriNetUnfolder]: 19/59 cut-off events. [2021-03-25 05:08:53,756 INFO L130 PetriNetUnfolder]: For 117/155 co-relation queries the response was YES. [2021-03-25 05:08:53,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 59 events. 19/59 cut-off events. For 117/155 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 0 based on Foata normal form. 29/87 useless extension candidates. Maximal degree in co-relation 209. Up to 27 conditions per place. [2021-03-25 05:08:53,759 INFO L132 encePairwiseOnDemand]: 112/117 looper letters, 1 selfloop transitions, 10 changer transitions 0/32 dead transitions. [2021-03-25 05:08:53,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 219 flow [2021-03-25 05:08:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:08:53,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:08:53,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 482 transitions. [2021-03-25 05:08:53,761 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8239316239316239 [2021-03-25 05:08:53,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 482 transitions. [2021-03-25 05:08:53,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 482 transitions. [2021-03-25 05:08:53,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 482 transitions. [2021-03-25 05:08:53,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.4) internal successors, (482), 5 states have internal predecessors, (482), 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) [2021-03-25 05:08:53,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-25 05:08:53,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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) [2021-03-25 05:08:53,767 INFO L185 Difference]: Start difference. First operand has 38 places, 32 transitions, 197 flow. Second operand 5 states and 482 transitions. [2021-03-25 05:08:53,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 219 flow [2021-03-25 05:08:53,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 192 flow, removed 7 selfloop flow, removed 3 redundant places. [2021-03-25 05:08:53,771 INFO L241 Difference]: Finished difference. Result has 40 places, 32 transitions, 198 flow [2021-03-25 05:08:53,771 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2021-03-25 05:08:53,771 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 05:08:53,771 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,771 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 32 transitions, 198 flow [2021-03-25 05:08:53,772 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 32 transitions, 198 flow [2021-03-25 05:08:53,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 32 transitions, 198 flow [2021-03-25 05:08:53,777 INFO L129 PetriNetUnfolder]: 18/60 cut-off events. [2021-03-25 05:08:53,778 INFO L130 PetriNetUnfolder]: For 88/93 co-relation queries the response was YES. [2021-03-25 05:08:53,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 60 events. 18/60 cut-off events. For 88/93 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 183. Up to 19 conditions per place. [2021-03-25 05:08:53,779 INFO L142 LiptonReduction]: Number of co-enabled transitions 126 [2021-03-25 05:08:53,843 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-25 05:08:53,843 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:08:53,844 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-03-25 05:08:53,844 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 196 flow [2021-03-25 05:08:53,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 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) [2021-03-25 05:08:53,845 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,845 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:08:53,845 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 744272319, now seen corresponding path program 1 times [2021-03-25 05:08:53,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281955868] [2021-03-25 05:08:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281955868] [2021-03-25 05:08:53,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:08:53,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731839205] [2021-03-25 05:08:53,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:53,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:53,876 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 118 [2021-03-25 05:08:53,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 118 [2021-03-25 05:08:53,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,897 INFO L129 PetriNetUnfolder]: 24/74 cut-off events. [2021-03-25 05:08:53,897 INFO L130 PetriNetUnfolder]: For 176/208 co-relation queries the response was YES. [2021-03-25 05:08:53,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 74 events. 24/74 cut-off events. For 176/208 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 250 event pairs, 0 based on Foata normal form. 14/86 useless extension candidates. Maximal degree in co-relation 257. Up to 28 conditions per place. [2021-03-25 05:08:53,898 INFO L132 encePairwiseOnDemand]: 114/118 looper letters, 4 selfloop transitions, 5 changer transitions 8/33 dead transitions. [2021-03-25 05:08:53,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 242 flow [2021-03-25 05:08:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 389 transitions. [2021-03-25 05:08:53,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8241525423728814 [2021-03-25 05:08:53,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 389 transitions. [2021-03-25 05:08:53,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 389 transitions. [2021-03-25 05:08:53,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 389 transitions. [2021-03-25 05:08:53,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.25) internal successors, (389), 4 states have internal predecessors, (389), 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) [2021-03-25 05:08:53,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:08:53,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:08:53,902 INFO L185 Difference]: Start difference. First operand has 39 places, 31 transitions, 196 flow. Second operand 4 states and 389 transitions. [2021-03-25 05:08:53,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 242 flow [2021-03-25 05:08:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 216 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-03-25 05:08:53,904 INFO L241 Difference]: Finished difference. Result has 40 places, 25 transitions, 148 flow [2021-03-25 05:08:53,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-03-25 05:08:53,904 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2021-03-25 05:08:53,905 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,905 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 25 transitions, 148 flow [2021-03-25 05:08:53,905 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 25 transitions, 148 flow [2021-03-25 05:08:53,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 25 transitions, 148 flow [2021-03-25 05:08:53,908 INFO L129 PetriNetUnfolder]: 10/37 cut-off events. [2021-03-25 05:08:53,908 INFO L130 PetriNetUnfolder]: For 48/53 co-relation queries the response was YES. [2021-03-25 05:08:53,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 37 events. 10/37 cut-off events. For 48/53 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 65 event pairs, 1 based on Foata normal form. 3/39 useless extension candidates. Maximal degree in co-relation 106. Up to 12 conditions per place. [2021-03-25 05:08:53,909 INFO L142 LiptonReduction]: Number of co-enabled transitions 92 [2021-03-25 05:08:53,910 INFO L154 LiptonReduction]: Checked pairs total: 16 [2021-03-25 05:08:53,910 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:53,911 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 05:08:53,911 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 148 flow [2021-03-25 05:08:53,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,911 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:53,912 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:53,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:08:53,912 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:53,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1652144795, now seen corresponding path program 1 times [2021-03-25 05:08:53,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:53,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266162678] [2021-03-25 05:08:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:53,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:53,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:53,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266162678] [2021-03-25 05:08:53,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:53,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:53,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136942035] [2021-03-25 05:08:53,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:53,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:53,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:53,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:53,941 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 118 [2021-03-25 05:08:53,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:53,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 118 [2021-03-25 05:08:53,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:53,964 INFO L129 PetriNetUnfolder]: 14/48 cut-off events. [2021-03-25 05:08:53,964 INFO L130 PetriNetUnfolder]: For 119/136 co-relation queries the response was YES. [2021-03-25 05:08:53,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 48 events. 14/48 cut-off events. For 119/136 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 115 event pairs, 0 based on Foata normal form. 11/57 useless extension candidates. Maximal degree in co-relation 141. Up to 16 conditions per place. [2021-03-25 05:08:53,964 INFO L132 encePairwiseOnDemand]: 115/118 looper letters, 3 selfloop transitions, 1 changer transitions 5/26 dead transitions. [2021-03-25 05:08:53,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 164 flow [2021-03-25 05:08:53,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2021-03-25 05:08:53,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8347457627118644 [2021-03-25 05:08:53,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 394 transitions. [2021-03-25 05:08:53,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 394 transitions. [2021-03-25 05:08:53,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:53,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 394 transitions. [2021-03-25 05:08:53,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:53,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:08:53,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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) [2021-03-25 05:08:53,969 INFO L185 Difference]: Start difference. First operand has 40 places, 25 transitions, 148 flow. Second operand 4 states and 394 transitions. [2021-03-25 05:08:53,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 164 flow [2021-03-25 05:08:53,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 26 transitions, 150 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-03-25 05:08:53,971 INFO L241 Difference]: Finished difference. Result has 41 places, 21 transitions, 119 flow [2021-03-25 05:08:53,971 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2021-03-25 05:08:53,971 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-03-25 05:08:53,971 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:53,971 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 21 transitions, 119 flow [2021-03-25 05:08:53,971 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 21 transitions, 119 flow [2021-03-25 05:08:53,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 21 transitions, 119 flow [2021-03-25 05:08:53,977 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-25 05:08:53,977 INFO L130 PetriNetUnfolder]: For 42/45 co-relation queries the response was YES. [2021-03-25 05:08:53,978 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 29 events. 6/29 cut-off events. For 42/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 36 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 80. Up to 10 conditions per place. [2021-03-25 05:08:53,978 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 05:08:54,118 INFO L154 LiptonReduction]: Checked pairs total: 37 [2021-03-25 05:08:54,118 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 05:08:54,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 147 [2021-03-25 05:08:54,119 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 128 flow [2021-03-25 05:08:54,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:54,119 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:08:54,119 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:08:54,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 05:08:54,119 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:08:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:08:54,120 INFO L82 PathProgramCache]: Analyzing trace with hash 659959913, now seen corresponding path program 2 times [2021-03-25 05:08:54,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:08:54,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18434204] [2021-03-25 05:08:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:08:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:08:54,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:54,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:08:54,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:54,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:54,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:08:54,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:08:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:08:54,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18434204] [2021-03-25 05:08:54,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:08:54,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:08:54,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407835113] [2021-03-25 05:08:54,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:08:54,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:08:54,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:08:54,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:08:54,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 122 [2021-03-25 05:08:54,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:54,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:08:54,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 122 [2021-03-25 05:08:54,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:08:54,176 INFO L129 PetriNetUnfolder]: 5/24 cut-off events. [2021-03-25 05:08:54,176 INFO L130 PetriNetUnfolder]: For 96/115 co-relation queries the response was YES. [2021-03-25 05:08:54,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 24 events. 5/24 cut-off events. For 96/115 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 5/28 useless extension candidates. Maximal degree in co-relation 95. Up to 9 conditions per place. [2021-03-25 05:08:54,176 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 05:08:54,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 18 transitions, 128 flow [2021-03-25 05:08:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:08:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:08:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2021-03-25 05:08:54,178 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7930327868852459 [2021-03-25 05:08:54,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2021-03-25 05:08:54,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2021-03-25 05:08:54,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:08:54,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2021-03-25 05:08:54,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-25 05:08:54,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-25 05:08:54,183 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-25 05:08:54,184 INFO L185 Difference]: Start difference. First operand has 37 places, 19 transitions, 128 flow. Second operand 4 states and 387 transitions. [2021-03-25 05:08:54,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 18 transitions, 128 flow [2021-03-25 05:08:54,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 18 transitions, 81 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-03-25 05:08:54,184 INFO L241 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2021-03-25 05:08:54,185 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2021-03-25 05:08:54,185 INFO L343 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2021-03-25 05:08:54,185 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:08:54,185 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 05:08:54,185 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 0 transitions, 0 flow [2021-03-25 05:08:54,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:08:54,185 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:08:54,185 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:08:54,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:08:54,186 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:08:54,186 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:08:54,186 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:08:54,186 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:08:54,187 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:08:54,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:08:54,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 05:08:54,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:08:54 BasicIcfg [2021-03-25 05:08:54,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:08:54,191 INFO L168 Benchmark]: Toolchain (without parser) took 5066.47 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 303.7 MB in the beginning and 359.3 MB in the end (delta: -55.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:54,191 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 339.7 MB. Free memory was 321.7 MB in the beginning and 321.6 MB in the end (delta: 69.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:08:54,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.19 ms. Allocated memory is still 339.7 MB. Free memory was 303.5 MB in the beginning and 301.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:54,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 299.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:54,193 INFO L168 Benchmark]: Boogie Preprocessor took 33.79 ms. Allocated memory is still 339.7 MB. Free memory was 299.8 MB in the beginning and 298.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:54,193 INFO L168 Benchmark]: RCFGBuilder took 481.31 ms. Allocated memory is still 339.7 MB. Free memory was 298.7 MB in the beginning and 274.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:08:54,193 INFO L168 Benchmark]: TraceAbstraction took 3986.78 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 273.5 MB in the beginning and 359.3 MB in the end (delta: -85.8 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:08:54,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 339.7 MB. Free memory was 321.7 MB in the beginning and 321.6 MB in the end (delta: 69.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 506.19 ms. Allocated memory is still 339.7 MB. Free memory was 303.5 MB in the beginning and 301.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.56 ms. Allocated memory is still 339.7 MB. Free memory was 301.9 MB in the beginning and 299.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.79 ms. Allocated memory is still 339.7 MB. Free memory was 299.8 MB in the beginning and 298.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 481.31 ms. Allocated memory is still 339.7 MB. Free memory was 298.7 MB in the beginning and 274.6 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3986.78 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 273.5 MB in the beginning and 359.3 MB in the end (delta: -85.8 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1680.1ms, 68 PlacesBefore, 30 PlacesAfterwards, 59 TransitionsBefore, 20 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 39 TotalNumberOfCompositions, 887 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 515, positive: 485, positive conditional: 0, positive unconditional: 485, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 379, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 379, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 515, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 379, unknown conditional: 0, unknown unconditional: 379] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 721.7ms, 30 PlacesBefore, 26 PlacesAfterwards, 22 TransitionsBefore, 18 TransitionsAfterwards, 132 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 274 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 112, positive: 87, positive conditional: 0, positive unconditional: 87, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 112, positive: 63, positive conditional: 0, positive unconditional: 63, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.5ms, 32 PlacesBefore, 32 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 148 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 50, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 50, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.7ms, 34 PlacesBefore, 34 PlacesAfterwards, 26 TransitionsBefore, 26 TransitionsAfterwards, 146 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 113 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.5ms, 35 PlacesBefore, 35 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 51 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.7ms, 38 PlacesBefore, 38 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 51 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 71.8ms, 40 PlacesBefore, 39 PlacesAfterwards, 32 TransitionsBefore, 31 TransitionsAfterwards, 126 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6ms, 40 PlacesBefore, 40 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 92 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 16 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 146.8ms, 41 PlacesBefore, 37 PlacesAfterwards, 21 TransitionsBefore, 19 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 37 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 3, unknown conditional: 0, unknown unconditional: 3] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 30 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3866.9ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 370.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1765.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 13 SDslu, 8 SDs, 0 SdLazy, 70 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=6, InterpolantAutomatonStates: 35, 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: 17.8ms SsaConstructionTime, 155.4ms SatisfiabilityAnalysisTime, 373.4ms InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...