/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 00:39:44,536 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 00:39:44,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 00:39:44,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 00:39:44,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 00:39:44,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 00:39:44,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 00:39:44,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 00:39:44,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 00:39:44,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 00:39:44,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 00:39:44,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 00:39:44,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 00:39:44,582 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 00:39:44,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 00:39:44,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 00:39:44,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 00:39:44,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 00:39:44,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 00:39:44,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 00:39:44,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 00:39:44,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 00:39:44,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 00:39:44,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 00:39:44,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 00:39:44,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 00:39:44,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 00:39:44,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 00:39:44,612 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-RepeatedSemanticLbeWithPredicates.epf [2021-03-26 00:39:44,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 00:39:44,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 00:39:44,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 00:39:44,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 00:39:44,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 00:39:44,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 00:39:44,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 00:39:44,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 00:39:44,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 00:39:44,641 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES [2021-03-26 00:39:44,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 00:39:44,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 00:39:44,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 00:39:44,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 00:39:44,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 00:39:44,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 00:39:44,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 00:39:44,889 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 00:39:44,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-03-26 00:39:44,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac83049d/15224ee6b61644c68f247f0d7d48e005/FLAG5defa2788 [2021-03-26 00:39:45,254 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 00:39:45,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-03-26 00:39:45,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac83049d/15224ee6b61644c68f247f0d7d48e005/FLAG5defa2788 [2021-03-26 00:39:45,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ac83049d/15224ee6b61644c68f247f0d7d48e005 [2021-03-26 00:39:45,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 00:39:45,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 00:39:45,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 00:39:45,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 00:39:45,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 00:39:45,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:39:45" (1/1) ... [2021-03-26 00:39:45,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c93dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:45, skipping insertion in model container [2021-03-26 00:39:45,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 12:39:45" (1/1) ... [2021-03-26 00:39:45,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 00:39:45,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 00:39:45,830 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/safe012_tso.opt.i[949,962] [2021-03-26 00:39:45,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:39:45,963 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 00:39:45,976 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/safe012_tso.opt.i[949,962] [2021-03-26 00:39:46,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 00:39:46,062 INFO L208 MainTranslator]: Completed translation [2021-03-26 00:39:46,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46 WrapperNode [2021-03-26 00:39:46,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 00:39:46,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 00:39:46,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 00:39:46,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 00:39:46,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 00:39:46,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 00:39:46,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 00:39:46,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 00:39:46,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (1/1) ... [2021-03-26 00:39:46,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 00:39:46,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 00:39:46,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 00:39:46,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 00:39:46,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (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 [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-26 00:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-26 00:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-26 00:39:46,197 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-26 00:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-26 00:39:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 00:39:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-26 00:39:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 00:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 00:39:46,199 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 00:39:46,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 00:39:46,392 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-26 00:39:46,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:39:46 BoogieIcfgContainer [2021-03-26 00:39:46,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 00:39:46,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 00:39:46,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 00:39:46,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 00:39:46,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 12:39:45" (1/3) ... [2021-03-26 00:39:46,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d847003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:39:46, skipping insertion in model container [2021-03-26 00:39:46,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 12:39:46" (2/3) ... [2021-03-26 00:39:46,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d847003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 12:39:46, skipping insertion in model container [2021-03-26 00:39:46,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 12:39:46" (3/3) ... [2021-03-26 00:39:46,398 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-03-26 00:39:46,402 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 00:39:46,404 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 00:39:46,404 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 00:39:46,426 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,427 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,431 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,432 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,437 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,437 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,438 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,438 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,439 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 00:39:46,441 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-26 00:39:46,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-26 00:39:46,466 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 00:39:46,466 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 00:39:46,466 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 00:39:46,467 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 00:39:46,467 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 00:39:46,467 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 00:39:46,467 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 00:39:46,467 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 00:39:46,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2021-03-26 00:39:46,498 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2021-03-26 00:39:46,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:46,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-26 00:39:46,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 76 transitions, 167 flow [2021-03-26 00:39:46,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 61 transitions, 131 flow [2021-03-26 00:39:46,504 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:46,512 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-26 00:39:46,514 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 61 transitions, 131 flow [2021-03-26 00:39:46,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 131 flow [2021-03-26 00:39:46,533 INFO L129 PetriNetUnfolder]: 1/61 cut-off events. [2021-03-26 00:39:46,533 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:46,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-26 00:39:46,535 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-26 00:39:47,762 INFO L154 LiptonReduction]: Checked pairs total: 942 [2021-03-26 00:39:47,762 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-26 00:39:47,764 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1261 [2021-03-26 00:39:47,771 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-26 00:39:47,771 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:47,771 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:47,772 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:47,772 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:47,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:47,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1196691833, now seen corresponding path program 1 times [2021-03-26 00:39:47,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:47,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500380630] [2021-03-26 00:39:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:47,917 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:47,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:47,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500380630] [2021-03-26 00:39:47,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:47,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-26 00:39:47,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844984140] [2021-03-26 00:39:47,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 00:39:47,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 00:39:47,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 00:39:47,940 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 116 [2021-03-26 00:39:47,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 3 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) [2021-03-26 00:39:47,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:47,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 116 [2021-03-26 00:39:47,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:47,957 INFO L129 PetriNetUnfolder]: 7/42 cut-off events. [2021-03-26 00:39:47,957 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:47,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 42 events. 7/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 83 event pairs, 5 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 59. Up to 18 conditions per place. [2021-03-26 00:39:47,958 INFO L132 encePairwiseOnDemand]: 112/116 looper letters, 4 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2021-03-26 00:39:47,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 69 flow [2021-03-26 00:39:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:39:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:39:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2021-03-26 00:39:47,966 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2021-03-26 00:39:47,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2021-03-26 00:39:47,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2021-03-26 00:39:47,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:47,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2021-03-26 00:39:47,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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) [2021-03-26 00:39:47,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-26 00:39:47,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 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) [2021-03-26 00:39:47,976 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 3 states and 296 transitions. [2021-03-26 00:39:47,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 69 flow [2021-03-26 00:39:47,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-26 00:39:47,979 INFO L241 Difference]: Finished difference. Result has 31 places, 23 transitions, 67 flow [2021-03-26 00:39:47,980 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2021-03-26 00:39:47,981 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2021-03-26 00:39:47,981 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:47,981 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 23 transitions, 67 flow [2021-03-26 00:39:47,981 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 23 transitions, 67 flow [2021-03-26 00:39:47,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 23 transitions, 67 flow [2021-03-26 00:39:47,985 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2021-03-26 00:39:47,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:47,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 31 events. 3/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 1 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 42. Up to 10 conditions per place. [2021-03-26 00:39:47,985 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 00:39:48,420 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-26 00:39:48,600 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-03-26 00:39:48,661 INFO L154 LiptonReduction]: Checked pairs total: 433 [2021-03-26 00:39:48,661 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 00:39:48,661 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 680 [2021-03-26 00:39:48,662 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2021-03-26 00:39:48,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 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) [2021-03-26 00:39:48,662 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:48,663 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:48,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 00:39:48,663 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:48,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:48,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1557259489, now seen corresponding path program 1 times [2021-03-26 00:39:48,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:48,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371125749] [2021-03-26 00:39:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:48,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:48,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:48,748 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:48,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:48,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:48,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371125749] [2021-03-26 00:39:48,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:48,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:39:48,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393568128] [2021-03-26 00:39:48,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:39:48,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:48,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:39:48,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:39:48,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-03-26 00:39:48,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-26 00:39:48,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:48,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-03-26 00:39:48,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:48,786 INFO L129 PetriNetUnfolder]: 4/29 cut-off events. [2021-03-26 00:39:48,786 INFO L130 PetriNetUnfolder]: For 7/15 co-relation queries the response was YES. [2021-03-26 00:39:48,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 29 events. 4/29 cut-off events. For 7/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 54. Up to 11 conditions per place. [2021-03-26 00:39:48,787 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 5 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-26 00:39:48,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 77 flow [2021-03-26 00:39:48,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:39:48,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:39:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2021-03-26 00:39:48,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8305555555555556 [2021-03-26 00:39:48,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2021-03-26 00:39:48,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2021-03-26 00:39:48,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:48,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2021-03-26 00:39:48,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2021-03-26 00:39:48,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-26 00:39:48,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-26 00:39:48,795 INFO L185 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 299 transitions. [2021-03-26 00:39:48,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 77 flow [2021-03-26 00:39:48,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 00:39:48,795 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 67 flow [2021-03-26 00:39:48,796 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-03-26 00:39:48,796 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2021-03-26 00:39:48,796 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:48,796 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 19 transitions, 67 flow [2021-03-26 00:39:48,796 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 19 transitions, 67 flow [2021-03-26 00:39:48,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 67 flow [2021-03-26 00:39:48,799 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-26 00:39:48,799 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 00:39:48,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 38. Up to 8 conditions per place. [2021-03-26 00:39:48,800 INFO L142 LiptonReduction]: Number of co-enabled transitions 136 [2021-03-26 00:39:48,817 INFO L154 LiptonReduction]: Checked pairs total: 120 [2021-03-26 00:39:48,817 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:39:48,817 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21 [2021-03-26 00:39:48,818 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 67 flow [2021-03-26 00:39:48,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-26 00:39:48,818 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:48,819 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:48,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 00:39:48,819 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:48,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:48,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2066713749, now seen corresponding path program 1 times [2021-03-26 00:39:48,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:48,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498612207] [2021-03-26 00:39:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:48,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:48,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:48,855 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:48,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:48,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498612207] [2021-03-26 00:39:48,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:48,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:39:48,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899390350] [2021-03-26 00:39:48,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:39:48,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:48,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:39:48,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:39:48,862 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2021-03-26 00:39:48,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-26 00:39:48,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:48,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2021-03-26 00:39:48,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:48,871 INFO L129 PetriNetUnfolder]: 3/26 cut-off events. [2021-03-26 00:39:48,872 INFO L130 PetriNetUnfolder]: For 18/25 co-relation queries the response was YES. [2021-03-26 00:39:48,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 26 events. 3/26 cut-off events. For 18/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 2 based on Foata normal form. 4/29 useless extension candidates. Maximal degree in co-relation 53. Up to 10 conditions per place. [2021-03-26 00:39:48,872 INFO L132 encePairwiseOnDemand]: 117/120 looper letters, 4 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-26 00:39:48,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 19 transitions, 81 flow [2021-03-26 00:39:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 00:39:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 00:39:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2021-03-26 00:39:48,873 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8277777777777777 [2021-03-26 00:39:48,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2021-03-26 00:39:48,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2021-03-26 00:39:48,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:48,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2021-03-26 00:39:48,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2021-03-26 00:39:48,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-26 00:39:48,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 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) [2021-03-26 00:39:48,876 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 67 flow. Second operand 3 states and 298 transitions. [2021-03-26 00:39:48,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 19 transitions, 81 flow [2021-03-26 00:39:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 75 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:39:48,877 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 72 flow [2021-03-26 00:39:48,877 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2021-03-26 00:39:48,881 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-26 00:39:48,881 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:48,881 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 19 transitions, 72 flow [2021-03-26 00:39:48,882 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 19 transitions, 72 flow [2021-03-26 00:39:48,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 19 transitions, 72 flow [2021-03-26 00:39:48,885 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-03-26 00:39:48,885 INFO L130 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2021-03-26 00:39:48,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 21 events. 1/21 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2021-03-26 00:39:48,886 INFO L142 LiptonReduction]: Number of co-enabled transitions 136 [2021-03-26 00:39:48,899 INFO L154 LiptonReduction]: Checked pairs total: 131 [2021-03-26 00:39:48,899 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:39:48,899 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-26 00:39:48,900 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 72 flow [2021-03-26 00:39:48,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 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) [2021-03-26 00:39:48,901 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:48,901 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:48,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 00:39:48,901 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:48,901 INFO L82 PathProgramCache]: Analyzing trace with hash 355430193, now seen corresponding path program 1 times [2021-03-26 00:39:48,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:48,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326505424] [2021-03-26 00:39:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:48,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:48,974 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:48,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:48,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326505424] [2021-03-26 00:39:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:48,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:39:48,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106378159] [2021-03-26 00:39:48,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:39:48,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:39:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:39:48,982 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-26 00:39:48,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-26 00:39:48,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:48,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-26 00:39:48,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,008 INFO L129 PetriNetUnfolder]: 13/61 cut-off events. [2021-03-26 00:39:49,009 INFO L130 PetriNetUnfolder]: For 43/54 co-relation queries the response was YES. [2021-03-26 00:39:49,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 61 events. 13/61 cut-off events. For 43/54 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 228 event pairs, 0 based on Foata normal form. 11/70 useless extension candidates. Maximal degree in co-relation 135. Up to 19 conditions per place. [2021-03-26 00:39:49,011 INFO L132 encePairwiseOnDemand]: 114/120 looper letters, 7 selfloop transitions, 11 changer transitions 0/29 dead transitions. [2021-03-26 00:39:49,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 155 flow [2021-03-26 00:39:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:39:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:39:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 478 transitions. [2021-03-26 00:39:49,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7966666666666666 [2021-03-26 00:39:49,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 478 transitions. [2021-03-26 00:39:49,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 478 transitions. [2021-03-26 00:39:49,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 478 transitions. [2021-03-26 00:39:49,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-03-26 00:39:49,030 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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) [2021-03-26 00:39:49,030 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 72 flow. Second operand 5 states and 478 transitions. [2021-03-26 00:39:49,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 155 flow [2021-03-26 00:39:49,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 00:39:49,032 INFO L241 Difference]: Finished difference. Result has 35 places, 27 transitions, 149 flow [2021-03-26 00:39:49,032 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2021-03-26 00:39:49,032 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-26 00:39:49,032 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,032 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 27 transitions, 149 flow [2021-03-26 00:39:49,032 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 27 transitions, 149 flow [2021-03-26 00:39:49,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 27 transitions, 149 flow [2021-03-26 00:39:49,037 INFO L129 PetriNetUnfolder]: 8/53 cut-off events. [2021-03-26 00:39:49,037 INFO L130 PetriNetUnfolder]: For 39/45 co-relation queries the response was YES. [2021-03-26 00:39:49,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 53 events. 8/53 cut-off events. For 39/45 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 195 event pairs, 2 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 138. Up to 17 conditions per place. [2021-03-26 00:39:49,038 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 00:39:49,047 INFO L154 LiptonReduction]: Checked pairs total: 152 [2021-03-26 00:39:49,047 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:39:49,048 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-03-26 00:39:49,048 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 149 flow [2021-03-26 00:39:49,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 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) [2021-03-26 00:39:49,049 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,049 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 00:39:49,049 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,049 INFO L82 PathProgramCache]: Analyzing trace with hash 355545513, now seen corresponding path program 2 times [2021-03-26 00:39:49,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672899967] [2021-03-26 00:39:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,082 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:49,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672899967] [2021-03-26 00:39:49,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:39:49,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252124358] [2021-03-26 00:39:49,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:39:49,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:39:49,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:39:49,089 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-26 00:39:49,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-03-26 00:39:49,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-26 00:39:49,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,109 INFO L129 PetriNetUnfolder]: 9/59 cut-off events. [2021-03-26 00:39:49,109 INFO L130 PetriNetUnfolder]: For 108/132 co-relation queries the response was YES. [2021-03-26 00:39:49,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 59 events. 9/59 cut-off events. For 108/132 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 236 event pairs, 0 based on Foata normal form. 9/66 useless extension candidates. Maximal degree in co-relation 172. Up to 16 conditions per place. [2021-03-26 00:39:49,110 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 7 selfloop transitions, 5 changer transitions 6/29 dead transitions. [2021-03-26 00:39:49,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 197 flow [2021-03-26 00:39:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:39:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:39:49,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 381 transitions. [2021-03-26 00:39:49,111 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.79375 [2021-03-26 00:39:49,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 381 transitions. [2021-03-26 00:39:49,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 381 transitions. [2021-03-26 00:39:49,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 381 transitions. [2021-03-26 00:39:49,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 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) [2021-03-26 00:39:49,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,113 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 149 flow. Second operand 4 states and 381 transitions. [2021-03-26 00:39:49,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 197 flow [2021-03-26 00:39:49,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 195 flow, removed 1 selfloop flow, removed 0 redundant places. [2021-03-26 00:39:49,115 INFO L241 Difference]: Finished difference. Result has 40 places, 21 transitions, 126 flow [2021-03-26 00:39:49,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2021-03-26 00:39:49,115 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-26 00:39:49,115 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,115 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 21 transitions, 126 flow [2021-03-26 00:39:49,115 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 21 transitions, 126 flow [2021-03-26 00:39:49,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 21 transitions, 126 flow [2021-03-26 00:39:49,118 INFO L129 PetriNetUnfolder]: 3/28 cut-off events. [2021-03-26 00:39:49,118 INFO L130 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2021-03-26 00:39:49,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 28 events. 3/28 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 1 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 80. Up to 8 conditions per place. [2021-03-26 00:39:49,119 INFO L142 LiptonReduction]: Number of co-enabled transitions 120 [2021-03-26 00:39:49,125 INFO L154 LiptonReduction]: Checked pairs total: 78 [2021-03-26 00:39:49,125 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:39:49,125 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-26 00:39:49,126 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 21 transitions, 126 flow [2021-03-26 00:39:49,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-03-26 00:39:49,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,126 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 00:39:49,127 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1281659909, now seen corresponding path program 1 times [2021-03-26 00:39:49,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194802763] [2021-03-26 00:39:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,156 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-26 00:39:49,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 00:39:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194802763] [2021-03-26 00:39:49,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:39:49,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559897081] [2021-03-26 00:39:49,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:39:49,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:39:49,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:39:49,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 120 [2021-03-26 00:39:49,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 21 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-03-26 00:39:49,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 120 [2021-03-26 00:39:49,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,187 INFO L129 PetriNetUnfolder]: 5/36 cut-off events. [2021-03-26 00:39:49,187 INFO L130 PetriNetUnfolder]: For 157/163 co-relation queries the response was YES. [2021-03-26 00:39:49,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 36 events. 5/36 cut-off events. For 157/163 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 2 based on Foata normal form. 5/40 useless extension candidates. Maximal degree in co-relation 117. Up to 10 conditions per place. [2021-03-26 00:39:49,187 INFO L132 encePairwiseOnDemand]: 116/120 looper letters, 3 selfloop transitions, 3 changer transitions 7/24 dead transitions. [2021-03-26 00:39:49,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 24 transitions, 169 flow [2021-03-26 00:39:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:39:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:39:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2021-03-26 00:39:49,189 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7895833333333333 [2021-03-26 00:39:49,189 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2021-03-26 00:39:49,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2021-03-26 00:39:49,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2021-03-26 00:39:49,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2021-03-26 00:39:49,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,191 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,191 INFO L185 Difference]: Start difference. First operand has 40 places, 21 transitions, 126 flow. Second operand 4 states and 379 transitions. [2021-03-26 00:39:49,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 24 transitions, 169 flow [2021-03-26 00:39:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 144 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-26 00:39:49,192 INFO L241 Difference]: Finished difference. Result has 39 places, 17 transitions, 90 flow [2021-03-26 00:39:49,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2021-03-26 00:39:49,192 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-26 00:39:49,192 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 17 transitions, 90 flow [2021-03-26 00:39:49,193 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 17 transitions, 90 flow [2021-03-26 00:39:49,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 17 transitions, 90 flow [2021-03-26 00:39:49,195 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-26 00:39:49,195 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-03-26 00:39:49,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 20 events. 1/20 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 1 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 54. Up to 6 conditions per place. [2021-03-26 00:39:49,195 INFO L142 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-26 00:39:49,229 INFO L154 LiptonReduction]: Checked pairs total: 52 [2021-03-26 00:39:49,229 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 00:39:49,230 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 00:39:49,230 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 15 transitions, 86 flow [2021-03-26 00:39:49,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 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) [2021-03-26 00:39:49,231 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,231 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 00:39:49,231 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash 246702359, now seen corresponding path program 1 times [2021-03-26 00:39:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209872682] [2021-03-26 00:39:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,262 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:39:49,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:39:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209872682] [2021-03-26 00:39:49,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 00:39:49,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650642458] [2021-03-26 00:39:49,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:39:49,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:39:49,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:39:49,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-26 00:39:49,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 15 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-26 00:39:49,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,295 INFO L129 PetriNetUnfolder]: 31/73 cut-off events. [2021-03-26 00:39:49,295 INFO L130 PetriNetUnfolder]: For 569/607 co-relation queries the response was YES. [2021-03-26 00:39:49,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 73 events. 31/73 cut-off events. For 569/607 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 232 event pairs, 15 based on Foata normal form. 12/78 useless extension candidates. Maximal degree in co-relation 227. Up to 48 conditions per place. [2021-03-26 00:39:49,296 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 4 changer transitions 7/25 dead transitions. [2021-03-26 00:39:49,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 25 transitions, 138 flow [2021-03-26 00:39:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-26 00:39:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-26 00:39:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-26 00:39:49,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7754098360655738 [2021-03-26 00:39:49,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-26 00:39:49,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-26 00:39:49,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-26 00:39:49,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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) [2021-03-26 00:39:49,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-26 00:39:49,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-26 00:39:49,300 INFO L185 Difference]: Start difference. First operand has 36 places, 15 transitions, 86 flow. Second operand 5 states and 473 transitions. [2021-03-26 00:39:49,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 25 transitions, 138 flow [2021-03-26 00:39:49,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 106 flow, removed 6 selfloop flow, removed 10 redundant places. [2021-03-26 00:39:49,301 INFO L241 Difference]: Finished difference. Result has 33 places, 18 transitions, 90 flow [2021-03-26 00:39:49,301 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=33, PETRI_TRANSITIONS=18} [2021-03-26 00:39:49,302 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2021-03-26 00:39:49,302 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,302 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 18 transitions, 90 flow [2021-03-26 00:39:49,302 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 18 transitions, 90 flow [2021-03-26 00:39:49,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 18 transitions, 90 flow [2021-03-26 00:39:49,306 INFO L129 PetriNetUnfolder]: 26/60 cut-off events. [2021-03-26 00:39:49,306 INFO L130 PetriNetUnfolder]: For 131/140 co-relation queries the response was YES. [2021-03-26 00:39:49,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 60 events. 26/60 cut-off events. For 131/140 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 170 event pairs, 14 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 192. Up to 38 conditions per place. [2021-03-26 00:39:49,307 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-26 00:39:49,406 INFO L154 LiptonReduction]: Checked pairs total: 14 [2021-03-26 00:39:49,406 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:39:49,406 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 104 [2021-03-26 00:39:49,407 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 98 flow [2021-03-26 00:39:49,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,407 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,408 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 00:39:49,408 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1925428276, now seen corresponding path program 1 times [2021-03-26 00:39:49,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104264256] [2021-03-26 00:39:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,441 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:39:49,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:39:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104264256] [2021-03-26 00:39:49,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:39:49,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475836657] [2021-03-26 00:39:49,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-26 00:39:49,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-26 00:39:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-26 00:39:49,447 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 125 [2021-03-26 00:39:49,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-26 00:39:49,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 125 [2021-03-26 00:39:49,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,478 INFO L129 PetriNetUnfolder]: 17/53 cut-off events. [2021-03-26 00:39:49,479 INFO L130 PetriNetUnfolder]: For 236/297 co-relation queries the response was YES. [2021-03-26 00:39:49,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 53 events. 17/53 cut-off events. For 236/297 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 147 event pairs, 3 based on Foata normal form. 17/68 useless extension candidates. Maximal degree in co-relation 199. Up to 35 conditions per place. [2021-03-26 00:39:49,479 INFO L132 encePairwiseOnDemand]: 117/125 looper letters, 5 selfloop transitions, 7 changer transitions 7/28 dead transitions. [2021-03-26 00:39:49,479 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 194 flow [2021-03-26 00:39:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 00:39:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 00:39:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2021-03-26 00:39:49,481 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.756 [2021-03-26 00:39:49,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2021-03-26 00:39:49,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2021-03-26 00:39:49,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2021-03-26 00:39:49,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 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) [2021-03-26 00:39:49,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2021-03-26 00:39:49,483 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 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) [2021-03-26 00:39:49,483 INFO L185 Difference]: Start difference. First operand has 31 places, 18 transitions, 98 flow. Second operand 6 states and 567 transitions. [2021-03-26 00:39:49,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 194 flow [2021-03-26 00:39:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 184 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-26 00:39:49,484 INFO L241 Difference]: Finished difference. Result has 37 places, 21 transitions, 144 flow [2021-03-26 00:39:49,485 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2021-03-26 00:39:49,485 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-26 00:39:49,485 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,485 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 21 transitions, 144 flow [2021-03-26 00:39:49,485 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 21 transitions, 144 flow [2021-03-26 00:39:49,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 21 transitions, 144 flow [2021-03-26 00:39:49,488 INFO L129 PetriNetUnfolder]: 12/41 cut-off events. [2021-03-26 00:39:49,488 INFO L130 PetriNetUnfolder]: For 140/155 co-relation queries the response was YES. [2021-03-26 00:39:49,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 41 events. 12/41 cut-off events. For 140/155 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 3 based on Foata normal form. 2/41 useless extension candidates. Maximal degree in co-relation 164. Up to 23 conditions per place. [2021-03-26 00:39:49,489 INFO L142 LiptonReduction]: Number of co-enabled transitions 24 [2021-03-26 00:39:49,573 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-26 00:39:49,574 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:39:49,574 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 89 [2021-03-26 00:39:49,574 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 21 transitions, 152 flow [2021-03-26 00:39:49,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-26 00:39:49,575 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,575 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 00:39:49,575 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1560826623, now seen corresponding path program 1 times [2021-03-26 00:39:49,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756126596] [2021-03-26 00:39:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,631 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-26 00:39:49,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 00:39:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756126596] [2021-03-26 00:39:49,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-26 00:39:49,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632988585] [2021-03-26 00:39:49,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-26 00:39:49,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-26 00:39:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-26 00:39:49,639 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 128 [2021-03-26 00:39:49,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 21 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-26 00:39:49,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 128 [2021-03-26 00:39:49,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,678 INFO L129 PetriNetUnfolder]: 7/35 cut-off events. [2021-03-26 00:39:49,678 INFO L130 PetriNetUnfolder]: For 166/178 co-relation queries the response was YES. [2021-03-26 00:39:49,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 35 events. 7/35 cut-off events. For 166/178 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 76 event pairs, 0 based on Foata normal form. 8/42 useless extension candidates. Maximal degree in co-relation 151. Up to 20 conditions per place. [2021-03-26 00:39:49,679 INFO L132 encePairwiseOnDemand]: 118/128 looper letters, 2 selfloop transitions, 10 changer transitions 4/25 dead transitions. [2021-03-26 00:39:49,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 220 flow [2021-03-26 00:39:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 00:39:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 00:39:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2021-03-26 00:39:49,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7310267857142857 [2021-03-26 00:39:49,681 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2021-03-26 00:39:49,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2021-03-26 00:39:49,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2021-03-26 00:39:49,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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) [2021-03-26 00:39:49,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-03-26 00:39:49,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 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) [2021-03-26 00:39:49,684 INFO L185 Difference]: Start difference. First operand has 35 places, 21 transitions, 152 flow. Second operand 7 states and 655 transitions. [2021-03-26 00:39:49,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 220 flow [2021-03-26 00:39:49,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 176 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-26 00:39:49,685 INFO L241 Difference]: Finished difference. Result has 40 places, 21 transitions, 146 flow [2021-03-26 00:39:49,685 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=40, PETRI_TRANSITIONS=21} [2021-03-26 00:39:49,685 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2021-03-26 00:39:49,685 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,685 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 21 transitions, 146 flow [2021-03-26 00:39:49,685 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 21 transitions, 146 flow [2021-03-26 00:39:49,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 21 transitions, 146 flow [2021-03-26 00:39:49,688 INFO L129 PetriNetUnfolder]: 5/29 cut-off events. [2021-03-26 00:39:49,688 INFO L130 PetriNetUnfolder]: For 52/54 co-relation queries the response was YES. [2021-03-26 00:39:49,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 29 events. 5/29 cut-off events. For 52/54 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 57 event pairs, 0 based on Foata normal form. 1/29 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2021-03-26 00:39:49,688 INFO L142 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-26 00:39:49,792 INFO L154 LiptonReduction]: Checked pairs total: 4 [2021-03-26 00:39:49,792 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 00:39:49,793 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 108 [2021-03-26 00:39:49,794 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 140 flow [2021-03-26 00:39:49,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-26 00:39:49,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 00:39:49,795 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 00:39:49,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 00:39:49,795 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-26 00:39:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 00:39:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1022986241, now seen corresponding path program 1 times [2021-03-26 00:39:49,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 00:39:49,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894637915] [2021-03-26 00:39:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 00:39:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 00:39:49,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 00:39:49,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 00:39:49,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 00:39:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 00:39:49,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894637915] [2021-03-26 00:39:49,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 00:39:49,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 00:39:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448767932] [2021-03-26 00:39:49,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-26 00:39:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 00:39:49,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-26 00:39:49,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-26 00:39:49,837 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 131 [2021-03-26 00:39:49,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 18 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-03-26 00:39:49,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 00:39:49,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 131 [2021-03-26 00:39:49,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 00:39:49,850 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-03-26 00:39:49,850 INFO L130 PetriNetUnfolder]: For 69/70 co-relation queries the response was YES. [2021-03-26 00:39:49,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 21 events. 5/21 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 85. Up to 10 conditions per place. [2021-03-26 00:39:49,850 INFO L132 encePairwiseOnDemand]: 125/131 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2021-03-26 00:39:49,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 17 transitions, 132 flow [2021-03-26 00:39:49,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-26 00:39:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-26 00:39:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2021-03-26 00:39:49,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7767175572519084 [2021-03-26 00:39:49,852 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2021-03-26 00:39:49,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2021-03-26 00:39:49,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 00:39:49,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2021-03-26 00:39:49,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 00:39:49,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-26 00:39:49,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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) [2021-03-26 00:39:49,854 INFO L185 Difference]: Start difference. First operand has 35 places, 18 transitions, 140 flow. Second operand 4 states and 407 transitions. [2021-03-26 00:39:49,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 17 transitions, 132 flow [2021-03-26 00:39:49,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 73 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-03-26 00:39:49,855 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-03-26 00:39:49,855 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-03-26 00:39:49,855 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2021-03-26 00:39:49,856 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 00:39:49,856 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 0 transitions, 0 flow [2021-03-26 00:39:49,856 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 0 transitions, 0 flow [2021-03-26 00:39:49,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 00:39:49,856 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 00:39:49,856 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 00:39:49,856 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. [2021-03-26 00:39:49,856 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 00:39:49,856 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 00:39:49,856 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 00:39:49,856 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 0 [2021-03-26 00:39:49,857 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 00:39:49,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 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) [2021-03-26 00:39:49,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 00:39:49,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 12:39:49 BasicIcfg [2021-03-26 00:39:49,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 00:39:49,861 INFO L168 Benchmark]: Toolchain (without parser) took 4190.96 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 332.6 MB in the beginning and 306.3 MB in the end (delta: 26.3 MB). Peak memory consumption was 105.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,861 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 369.1 MB. Free memory is still 350.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 00:39:49,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.10 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 332.3 MB in the end (delta: -16.1 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.40 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 330.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,862 INFO L168 Benchmark]: Boogie Preprocessor took 30.43 ms. Allocated memory is still 369.1 MB. Free memory was 330.2 MB in the beginning and 329.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,862 INFO L168 Benchmark]: RCFGBuilder took 253.10 ms. Allocated memory is still 369.1 MB. Free memory was 329.2 MB in the beginning and 305.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,863 INFO L168 Benchmark]: TraceAbstraction took 3465.80 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 304.0 MB in the beginning and 306.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.0 GB. [2021-03-26 00:39:49,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 369.1 MB. Free memory is still 350.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 392.10 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 332.3 MB in the end (delta: -16.1 kB). Peak memory consumption was 9.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.40 ms. Allocated memory is still 369.1 MB. Free memory was 332.3 MB in the beginning and 330.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.43 ms. Allocated memory is still 369.1 MB. Free memory was 330.2 MB in the beginning and 329.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 253.10 ms. Allocated memory is still 369.1 MB. Free memory was 329.2 MB in the beginning and 305.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3465.80 ms. Allocated memory was 369.1 MB in the beginning and 446.7 MB in the end (delta: 77.6 MB). Free memory was 304.0 MB in the beginning and 306.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1248.0ms, 70 PlacesBefore, 31 PlacesAfterwards, 61 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 40 TotalNumberOfCompositions, 942 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 628, positive: 594, positive conditional: 594, positive unconditional: 0, negative: 34, negative conditional: 34, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 489, positive: 473, positive conditional: 0, positive unconditional: 473, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 489, positive: 473, positive conditional: 0, positive unconditional: 473, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 489, positive: 467, positive conditional: 0, positive unconditional: 467, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 628, positive: 121, positive conditional: 121, positive unconditional: 0, negative: 18, negative conditional: 18, negative unconditional: 0, unknown: 489, unknown conditional: 489, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 39, Positive conditional cache size: 39, Positive unconditional cache size: 0, Negative cache size: 5, Negative conditional cache size: 5, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 679.8ms, 31 PlacesBefore, 27 PlacesAfterwards, 23 TransitionsBefore, 19 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 157, positive: 122, positive conditional: 122, positive unconditional: 0, negative: 35, negative conditional: 35, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 80, positive: 64, positive conditional: 9, positive unconditional: 55, negative: 16, negative conditional: 3, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 80, positive: 64, positive conditional: 9, positive unconditional: 55, negative: 16, negative conditional: 3, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 80, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 16, negative conditional: 3, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 48, negative conditional: 14, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 157, positive: 58, positive conditional: 58, positive unconditional: 0, negative: 19, negative conditional: 19, negative unconditional: 0, unknown: 80, unknown conditional: 80, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 69, Positive conditional cache size: 69, Positive unconditional cache size: 0, Negative cache size: 15, Negative conditional cache size: 15, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20.6ms, 29 PlacesBefore, 29 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 136 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 120 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55, positive: 44, positive conditional: 44, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 2, positive unconditional: 11, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 2, positive unconditional: 11, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 18, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 2, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 16, negative conditional: 9, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 55, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 82, Positive conditional cache size: 82, Positive unconditional cache size: 0, Negative cache size: 20, Negative conditional cache size: 20, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.6ms, 30 PlacesBefore, 30 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 136 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 131 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57, positive: 45, positive conditional: 45, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 2, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 2, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 2, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 6, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 57, positive: 43, positive conditional: 43, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 6, unknown conditional: 6, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 84, Positive conditional cache size: 84, Positive unconditional cache size: 0, Negative cache size: 24, Negative conditional cache size: 24, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.2ms, 35 PlacesBefore, 35 PlacesAfterwards, 27 TransitionsBefore, 27 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 58, positive: 47, positive conditional: 47, positive unconditional: 0, negative: 11, negative conditional: 11, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 26, positive conditional: 17, positive unconditional: 9, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 29, positive: 26, positive conditional: 17, positive unconditional: 9, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 3, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 58, positive: 21, positive conditional: 21, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 29, unknown conditional: 29, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 110, Positive conditional cache size: 110, Positive unconditional cache size: 0, Negative cache size: 27, Negative conditional cache size: 27, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.9ms, 40 PlacesBefore, 40 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 120 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 78 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 44, positive: 35, positive conditional: 35, positive unconditional: 0, negative: 9, negative conditional: 9, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 5, positive unconditional: 12, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 5, positive unconditional: 12, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 44, positive: 18, positive conditional: 18, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 20, unknown conditional: 20, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 157, Positive cache size: 127, Positive conditional cache size: 127, Positive unconditional cache size: 0, Negative cache size: 30, Negative conditional cache size: 30, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 36.7ms, 39 PlacesBefore, 36 PlacesAfterwards, 17 TransitionsBefore, 15 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 52 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 15, positive: 7, positive conditional: 7, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 58, Positive conditional cache size: 58, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 104.3ms, 33 PlacesBefore, 31 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 14 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 14, 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: 13, positive: 13, positive conditional: 10, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 10, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 14, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 41, Positive conditional cache size: 41, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 88.5ms, 37 PlacesBefore, 35 PlacesAfterwards, 21 TransitionsBefore, 21 TransitionsAfterwards, 24 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 9, 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: 8, positive: 8, positive conditional: 7, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 7, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 9, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 8, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 31, Positive conditional cache size: 31, Positive unconditional cache size: 0, Negative cache size: 6, Negative conditional cache size: 6, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 107.0ms, 40 PlacesBefore, 35 PlacesAfterwards, 21 TransitionsBefore, 18 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, 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: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5ms, 27 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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, 75 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3394.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 348.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1301.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 48 SDtfs, 32 SDslu, 31 SDs, 0 SdLazy, 154 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 95.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=8, InterpolantAutomatonStates: 44, 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: 14.9ms SsaConstructionTime, 161.7ms SatisfiabilityAnalysisTime, 344.6ms InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 517 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...